diff --git a/android/brave_java_sources.gni b/android/brave_java_sources.gni
index 316597eb83c..c987eaa5d5e 100644
--- a/android/brave_java_sources.gni
+++ b/android/brave_java_sources.gni
@@ -420,6 +420,7 @@ brave_java_sources = [
   "../../brave/android/java/org/chromium/chrome/browser/tasks/BraveReturnToChromeUtil.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/BraveHomeButton.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/BraveToolbarManager.java",
+  "../../brave/android/java/org/chromium/chrome/browser/toolbar/adaptive/BraveBookmarksButtonController.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/bottom/BookmarksButton.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/bottom/BottomToolbarConfiguration.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/bottom/BottomToolbarCoordinator.java",
@@ -440,6 +441,7 @@ brave_java_sources = [
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/menu_button/BraveMenuButtonCoordinator.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/top/BraveToolbarLayoutImpl.java",
   "../../brave/android/java/org/chromium/chrome/browser/toolbar/top/BraveTopToolbarCoordinator.java",
+  "../../brave/android/java/org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator.java",
   "../../brave/android/java/org/chromium/chrome/browser/ui/messages/infobar/BraveSimpleConfirmInfoBarBuilder.java",
   "../../brave/android/java/org/chromium/chrome/browser/ui/system/BraveStatusBarColorController.java",
   "../../brave/android/java/org/chromium/chrome/browser/undo_tab_close_snackbar/BraveUndoBarControllerBase.java",
diff --git a/android/java/apk_for_test.flags b/android/java/apk_for_test.flags
index 637e31c5021..416bf4804b2 100644
--- a/android/java/apk_for_test.flags
+++ b/android/java/apk_for_test.flags
@@ -1030,3 +1030,38 @@
 -keep class org.chromium.chrome.browser.download.home.search.BraveSearchBarCoordinator {
     <init>(...);
 }
+
+-keep class org.chromium.chrome.browser.ui.AdaptiveToolbarUiCoordinator {
+    <init>(...);
+}
+
+-keep class org.chromium.chrome.browser.ui.BraveAdaptiveToolbarUiCoordinator {
+    <init>(...);
+}
+
+-keep class org.chromium.chrome.browser.toolbar.adaptive.AdaptiveToolbarStatePredictor {
+    *** isValidSegment(...);
+}
+
+-keep class org.chromium.chrome.browser.toolbar.adaptive.settings.RadioButtonGroupAdaptiveToolbarPreference {
+    *** mIsBound;
+    *** mAutoButton;
+    *** mNewTabButton;
+    *** mShareButton;
+}
+
+-keep class org.chromium.chrome.browser.ui.AdaptiveToolbarUiCoordinator {
+    *** mContext;
+    *** mActivityTabProvider;
+    *** mModalDialogManagerSupplier;
+    *** mProfileSupplier;
+    *** mAdaptiveToolbarButtonController;
+}
+
+-keep class org.chromium.chrome.browser.toolbar.adaptive.AdaptiveToolbarStatePredictor {
+    public <init>(...);
+}
+
+-keep class org.chromium.chrome.browser.toolbar.adaptive.BraveAdaptiveToolbarStatePredictor {
+    public <init>(...);
+}
diff --git a/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java b/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
index b88a5e297b1..7b8684676c7 100644
--- a/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
+++ b/android/java/org/chromium/chrome/browser/tabbed_mode/BraveTabbedRootUiCoordinator.java
@@ -22,6 +22,7 @@ import org.chromium.chrome.browser.ActivityTabProvider;
 import org.chromium.chrome.browser.app.BraveActivity;
 import org.chromium.chrome.browser.back_press.BackPressManager;
 import org.chromium.chrome.browser.bookmarks.BookmarkManagerOpener;
+import org.chromium.chrome.browser.bookmarks.BookmarkManagerOpenerImpl;
 import org.chromium.chrome.browser.bookmarks.BookmarkModel;
 import org.chromium.chrome.browser.bookmarks.TabBookmarker;
 import org.chromium.chrome.browser.compositor.CompositorViewHolder;
@@ -44,6 +45,7 @@ import org.chromium.chrome.browser.tab_ui.TabSwitcher;
 import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.chrome.browser.toolbar.ToolbarIntentMetadata;
+import org.chromium.chrome.browser.ui.BraveAdaptiveToolbarUiCoordinator;
 import org.chromium.chrome.browser.ui.appmenu.AppMenuBlocker;
 import org.chromium.chrome.browser.ui.appmenu.AppMenuDelegate;
 import org.chromium.chrome.browser.ui.edge_to_edge.EdgeToEdgeController;
@@ -206,4 +208,16 @@ public class BraveTabbedRootUiCoordinator extends TabbedRootUiCoordinator {
                     hubManager.setStatusIndicatorHeight(bottomToolbarHeight);
                 });
     }
+
+    @Override
+    protected void initializeToolbar() {
+        super.initializeToolbar();
+
+        assert mAdaptiveToolbarUiCoordinator instanceof BraveAdaptiveToolbarUiCoordinator
+                : "Bytecode change was not applied!";
+        if (mAdaptiveToolbarUiCoordinator
+                instanceof BraveAdaptiveToolbarUiCoordinator braveCoordinator) {
+            braveCoordinator.initializeBrave(new BookmarkManagerOpenerImpl());
+        }
+    }
 }
diff --git a/android/java/org/chromium/chrome/browser/toolbar/adaptive/BraveBookmarksButtonController.java b/android/java/org/chromium/chrome/browser/toolbar/adaptive/BraveBookmarksButtonController.java
new file mode 100644
index 00000000000..9ab168cb20d
--- /dev/null
+++ b/android/java/org/chromium/chrome/browser/toolbar/adaptive/BraveBookmarksButtonController.java
@@ -0,0 +1,74 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.toolbar.adaptive;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.view.View;
+
+import org.chromium.base.supplier.ObservableSupplier;
+import org.chromium.build.annotations.NullMarked;
+import org.chromium.build.annotations.Nullable;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ActivityTabProvider;
+import org.chromium.chrome.browser.bookmarks.BookmarkManagerOpener;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.toolbar.optional_button.BaseButtonDataProvider;
+import org.chromium.ui.modaldialog.ModalDialogManager;
+
+/** Handles displaying bookmarks button on toolbar. */
+@NullMarked
+public class BraveBookmarksButtonController extends BaseButtonDataProvider {
+    private final Context mContext;
+    private final ObservableSupplier<Profile> mProfileSupplier;
+    private final BookmarkManagerOpener mBookmarkManagerOpener;
+
+    public BraveBookmarksButtonController(
+            Context context,
+            Drawable buttonDrawable,
+            ActivityTabProvider tabProvider,
+            ObservableSupplier<Profile> profileSupplier,
+            ModalDialogManager modalDialogManager,
+            BookmarkManagerOpener bookmarkManagerOpener) {
+        super(
+                tabProvider,
+                modalDialogManager,
+                buttonDrawable,
+                context.getString(R.string.menu_bookmarks),
+                /* actionChipLabelResId= */ Resources.ID_NULL,
+                /* supportsTinting= */ true,
+                /* iphCommandBuilder= */ null,
+                AdaptiveToolbarButtonVariant.BOOKMARKS,
+                /* tooltipTextResId= */ R.string.menu_bookmarks);
+
+        mContext = context;
+        mProfileSupplier = profileSupplier;
+        mBookmarkManagerOpener = bookmarkManagerOpener;
+    }
+
+    @Override
+    public void onClick(View view) {
+        Profile profile = mProfileSupplier.get();
+        if (profile == null) return;
+
+        assert mContext instanceof Activity : "Context is not an Activity";
+        if (!(mContext instanceof Activity)) return;
+
+        mBookmarkManagerOpener.showBookmarkManager(
+                (Activity) mContext, mActiveTabSupplier.get(), profile, /* folderId= */ null);
+    }
+
+    @Override
+    protected boolean shouldShowButton(@Nullable Tab tab) {
+        if (!super.shouldShowButton(tab)) return false;
+
+        // Show the `Bookmarks` button for all tabs
+        return true;
+    }
+}
diff --git a/android/java/org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator.java b/android/java/org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator.java
new file mode 100644
index 00000000000..929e2ce6b1d
--- /dev/null
+++ b/android/java/org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator.java
@@ -0,0 +1,79 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.ui;
+
+import android.content.Context;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.content.res.AppCompatResources;
+
+import org.chromium.base.supplier.ObservableSupplier;
+import org.chromium.base.supplier.Supplier;
+import org.chromium.build.annotations.NullMarked;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ActivityTabProvider;
+import org.chromium.chrome.browser.bookmarks.BookmarkManagerOpener;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.toolbar.adaptive.AdaptiveToolbarButtonController;
+import org.chromium.chrome.browser.toolbar.adaptive.AdaptiveToolbarButtonVariant;
+import org.chromium.chrome.browser.toolbar.adaptive.BraveBookmarksButtonController;
+import org.chromium.ui.modaldialog.ModalDialogManager;
+
+/**
+ * Brave-specific coordinator for adaptive toolbar UI components. Extends the base
+ * AdaptiveToolbarUiCoordinator with Brave-specific functionality.
+ */
+@NullMarked
+public class BraveAdaptiveToolbarUiCoordinator extends AdaptiveToolbarUiCoordinator {
+    // Variables below will be removed in bytecode, variables from the parent class will be used
+    // instead.
+    @Nullable private Context mContext;
+    @Nullable private ActivityTabProvider mActivityTabProvider;
+    @Nullable private Supplier<ModalDialogManager> mModalDialogManagerSupplier;
+    @Nullable private ObservableSupplier<Profile> mProfileSupplier;
+    @Nullable private AdaptiveToolbarButtonController mAdaptiveToolbarButtonController;
+
+    public BraveAdaptiveToolbarUiCoordinator(
+            Context context,
+            ActivityTabProvider activityTabProvider,
+            Supplier<ModalDialogManager> modalDialogManagerSupplier) {
+        super(context, activityTabProvider, modalDialogManagerSupplier);
+    }
+
+    /**
+     * Initialize Brave-specific adaptive toolbar components.
+     *
+     * @param bookmarkManagerOpener The bookmark manager opener for the `Bookmarks` button.
+     */
+    public void initializeBrave(BookmarkManagerOpener bookmarkManagerOpener) {
+        assert mContext != null
+                        && mActivityTabProvider != null
+                        && mModalDialogManagerSupplier != null
+                        && mProfileSupplier != null
+                : "Bytecode changes were not applied!";
+        if (mContext == null
+                || mActivityTabProvider == null
+                || mModalDialogManagerSupplier == null
+                || mProfileSupplier == null) {
+            return;
+        }
+        assert mAdaptiveToolbarButtonController != null
+                : "initializeBrave must be called after initialize!";
+        if (mAdaptiveToolbarButtonController == null) {
+            return;
+        }
+        var bookmarksButtonController =
+                new BraveBookmarksButtonController(
+                        mContext,
+                        AppCompatResources.getDrawable(mContext, R.drawable.brave_menu_bookmarks),
+                        mActivityTabProvider,
+                        mProfileSupplier,
+                        mModalDialogManagerSupplier.get(),
+                        bookmarkManagerOpener);
+        mAdaptiveToolbarButtonController.addButtonVariant(
+                AdaptiveToolbarButtonVariant.BOOKMARKS, bookmarksButtonController);
+    }
+}
diff --git a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
index 4fd9397843d..147882bba81 100644
--- a/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
+++ b/android/javatests/org/chromium/chrome/browser/BytecodeTest.java
@@ -1017,6 +1017,13 @@ public class BytecodeTest {
                         View.class,
                         Context.class,
                         boolean.class));
+        Assert.assertTrue(
+                methodExists(
+                        "org/chromium/chrome/browser/toolbar/adaptive/AdaptiveToolbarStatePredictor", // presubmit: ignore-long-line
+                        "isValidSegment",
+                        MethodModifier.REGULAR,
+                        boolean.class,
+                        int.class));
     }
 
     @Test
@@ -2011,6 +2018,13 @@ public class BytecodeTest {
                         Context.class,
                         Callback.class,
                         boolean.class));
+        Assert.assertTrue(
+                constructorsMatch(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator",
+                        "org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator",
+                        Context.class,
+                        ActivityTabProvider.class,
+                        Supplier.class));
     }
 
     @Test
@@ -2440,6 +2454,41 @@ public class BytecodeTest {
                         "sProfileMap",
                         true,
                         ProfileKeyedMap.class));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/toolbar/adaptive/settings/RadioButtonGroupAdaptiveToolbarPreference", // presubmit: ignore-long-line
+                        "mIsBound"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/toolbar/adaptive/settings/RadioButtonGroupAdaptiveToolbarPreference", // presubmit: ignore-long-line
+                        "mAutoButton"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/toolbar/adaptive/settings/RadioButtonGroupAdaptiveToolbarPreference", // presubmit: ignore-long-line
+                        "mNewTabButton"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/toolbar/adaptive/settings/RadioButtonGroupAdaptiveToolbarPreference", // presubmit: ignore-long-line
+                        "mShareButton"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator", "mContext"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator",
+                        "mActivityTabProvider"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator",
+                        "mModalDialogManagerSupplier"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator",
+                        "mProfileSupplier"));
+        Assert.assertTrue(
+                fieldExists(
+                        "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator",
+                        "mAdaptiveToolbarButtonController"));
     }
 
     @Test
@@ -2605,6 +2654,10 @@ public class BytecodeTest {
                 checkSuperName(
                         "org/chromium/chrome/browser/ui/appmenu/BraveAppMenu",
                         "org/chromium/chrome/browser/ui/appmenu/AppMenu"));
+        Assert.assertTrue(
+                checkSuperName(
+                        "org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor", // presubmit: ignore-long-line
+                        "org/chromium/chrome/browser/toolbar/adaptive/AdaptiveToolbarStatePredictor")); // presubmit: ignore-long-line
     }
 
     @Test
diff --git a/android/junit/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveAdaptiveToolbarSettingsFragmentTest.java b/android/junit/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveAdaptiveToolbarSettingsFragmentTest.java
index 10bfee9c89c..bcea5e8df0b 100644
--- a/android/junit/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveAdaptiveToolbarSettingsFragmentTest.java
+++ b/android/junit/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveAdaptiveToolbarSettingsFragmentTest.java
@@ -192,6 +192,30 @@ public class BraveAdaptiveToolbarSettingsFragmentTest {
                             AdaptiveToolbarButtonVariant.VOICE,
                             ChromeSharedPreferences.getInstance()
                                     .readInt(ADAPTIVE_TOOLBAR_CUSTOMIZATION_SETTINGS));
+
+                    // Check indexes of Bookmarks button (as a first Brave-specific button) and
+                    // MAX_VALUE
+                    Assert.assertEquals(
+                            AdaptiveToolbarButtonVariant.BOOKMARKS,
+                            AdaptiveToolbarButtonVariant.TAB_GROUPING + 1);
+                    Assert.assertEquals(
+                            AdaptiveToolbarButtonVariant.NEWS,
+                            AdaptiveToolbarButtonVariant.MAX_VALUE);
+
+                    // Test Bookmarks button
+                    Assert.assertEquals(
+                            R.id.adaptive_option_bookmarks,
+                            getButton(AdaptiveToolbarButtonVariant.BOOKMARKS).getId());
+                    selectButton(AdaptiveToolbarButtonVariant.BOOKMARKS);
+                    assertButtonCheckedCorrectly(
+                            "Bookmarks", AdaptiveToolbarButtonVariant.BOOKMARKS);
+                    Assert.assertEquals(
+                            AdaptiveToolbarButtonVariant.BOOKMARKS,
+                            mRadioPreference.getSelection());
+                    Assert.assertEquals(
+                            AdaptiveToolbarButtonVariant.BOOKMARKS,
+                            ChromeSharedPreferences.getInstance()
+                                    .readInt(ADAPTIVE_TOOLBAR_CUSTOMIZATION_SETTINGS));
                 });
     }
 
diff --git a/browser/ui/android/toolbar/BUILD.gn b/browser/ui/android/toolbar/BUILD.gn
index 404bf81a754..cdc08259672 100644
--- a/browser/ui/android/toolbar/BUILD.gn
+++ b/browser/ui/android/toolbar/BUILD.gn
@@ -10,7 +10,11 @@ import("//extensions/buildflags/buildflags.gni")
 import("//third_party/jni_zero/jni_zero.gni")
 
 android_library("java") {
-  sources = [ "java/src/org/chromium/chrome/browser/toolbar/BraveToolbarLongPressMenuHandler.java" ]
+  sources = [
+    "java/src/org/chromium/chrome/browser/toolbar/BraveToolbarLongPressMenuHandler.java",
+    "java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor.java",
+    "java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictorDummySuper.java",
+  ]
 
   deps = [
     "//base:supplier_java",
@@ -21,3 +25,7 @@ android_library("java") {
     "//url:url_java",
   ]
 }
+
+android_resources("java_resources") {
+  sources = [ "java/brave-res/layout/brave_adaptive_preference_buttons.xml" ]
+}
diff --git a/browser/ui/android/toolbar/java/brave-res/layout/brave_adaptive_preference_buttons.xml b/browser/ui/android/toolbar/java/brave-res/layout/brave_adaptive_preference_buttons.xml
new file mode 100644
index 00000000000..bda4a49a95f
--- /dev/null
+++ b/browser/ui/android/toolbar/java/brave-res/layout/brave_adaptive_preference_buttons.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2025 The Brave Authors. All rights reserved.
+     This Source Code Form is subject to the terms of the Mozilla Public
+     License, v. 2.0. If a copy of the MPL was not distributed with this file,
+     You can obtain one at https://mozilla.org/MPL/2.0/. -->
+
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+     xmlns:app="http://schemas.android.com/apk/res-auto">
+
+     <org.chromium.components.browser_ui.widget.RadioButtonWithDescription     
+          android:id="@+id/adaptive_option_bookmarks"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:minHeight="@dimen/min_touch_target_size"
+          android:paddingTop="10dp"
+          app:iconSrc="@drawable/brave_menu_bookmarks"
+          app:primaryText="@string/menu_bookmarks"/>
+
+</merge>
diff --git a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor.java b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor.java
new file mode 100644
index 00000000000..c7cd21b56e2
--- /dev/null
+++ b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor.java
@@ -0,0 +1,49 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.toolbar.adaptive;
+
+import android.content.Context;
+
+import org.chromium.build.annotations.NullMarked;
+import org.chromium.build.annotations.Nullable;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.ui.permissions.AndroidPermissionDelegate;
+
+/**
+ * Brave-specific implementation of AdaptiveToolbarStatePredictor that extends the base
+ * functionality to support Brave-specific toolbar button variants.
+ */
+@NullMarked
+public class BraveAdaptiveToolbarStatePredictor
+        extends BraveAdaptiveToolbarStatePredictorDummySuper {
+
+    public BraveAdaptiveToolbarStatePredictor(
+            Context context,
+            Profile profile,
+            @Nullable AndroidPermissionDelegate androidPermissionDelegate,
+            @Nullable AdaptiveToolbarBehavior behavior) {
+        super(context, profile, androidPermissionDelegate, behavior);
+    }
+
+    /**
+     * Returns true if the given toolbar button variant is a Brave-specific valid option, otherwise
+     * defers to the parent implementation.
+     *
+     * @param variant The button variant to validate
+     * @return true if the variant is valid for Brave, otherwise call super implementation
+     */
+    @Override
+    public boolean isValidSegment(@AdaptiveToolbarButtonVariant int variant) {
+        // Check Brave-specific variants first
+        switch (variant) {
+                // Add more Brave-specific variants here as needed
+            case AdaptiveToolbarButtonVariant.BOOKMARKS:
+                return true;
+        }
+
+        return super.isValidSegment(variant);
+    }
+}
diff --git a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictorDummySuper.java b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictorDummySuper.java
new file mode 100644
index 00000000000..b80e2b7ce09
--- /dev/null
+++ b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictorDummySuper.java
@@ -0,0 +1,35 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.chromium.chrome.browser.toolbar.adaptive;
+
+import android.content.Context;
+
+import org.chromium.build.annotations.NullMarked;
+import org.chromium.build.annotations.Nullable;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.ui.permissions.AndroidPermissionDelegate;
+
+/**
+ * Dummy super class for BraveAdaptiveToolbarStatePredictor that allows to call the private methods
+ * of AdaptiveToolbarStatePredictor via bytecode modification.
+ */
+@NullMarked
+public class BraveAdaptiveToolbarStatePredictorDummySuper extends AdaptiveToolbarStatePredictor {
+    public BraveAdaptiveToolbarStatePredictorDummySuper(
+            Context context,
+            Profile profile,
+            @Nullable AndroidPermissionDelegate androidPermissionDelegate,
+            @Nullable AdaptiveToolbarBehavior behavior) {
+        super(context, profile, androidPermissionDelegate, behavior);
+
+        assert false : "This class usage should be removed via bytecode modification!";
+    }
+
+    public boolean isValidSegment(@AdaptiveToolbarButtonVariant int variant) {
+        assert false : "This class usage should be removed via bytecode modification!";
+        return false;
+    }
+}
diff --git a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveRadioButtonGroupAdaptiveToolbarPreference.java b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveRadioButtonGroupAdaptiveToolbarPreference.java
index 188daeabe2f..b850a3b2460 100644
--- a/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveRadioButtonGroupAdaptiveToolbarPreference.java
+++ b/browser/ui/android/toolbar/java/src/org/chromium/chrome/browser/toolbar/adaptive/settings/BraveRadioButtonGroupAdaptiveToolbarPreference.java
@@ -15,6 +15,7 @@ import androidx.preference.PreferenceViewHolder;
 import org.chromium.build.annotations.NullMarked;
 import org.chromium.build.annotations.Nullable;
 import org.chromium.chrome.browser.toolbar.R;
+import org.chromium.chrome.browser.toolbar.adaptive.AdaptiveToolbarButtonVariant;
 import org.chromium.components.browser_ui.widget.RadioButtonWithDescription;
 import org.chromium.ui.base.DeviceFormFactor;
 
@@ -22,11 +23,18 @@ import org.chromium.ui.base.DeviceFormFactor;
 @NullMarked
 public class BraveRadioButtonGroupAdaptiveToolbarPreference
         extends RadioButtonGroupAdaptiveToolbarPreference {
-    private final Context mContext;
+    // Variables below are to be removed in the bytecode, variables from the parent class will be
+    // used instead.
+    private @AdaptiveToolbarButtonVariant int mSelected;
+    private boolean mIsBound;
     private @Nullable RadioButtonWithDescription mAutoButton;
     private @Nullable RadioButtonWithDescription mNewTabButton;
     private @Nullable RadioButtonWithDescription mShareButton;
 
+    // Own members.
+    private final Context mContext;
+    private @Nullable RadioButtonWithDescription mBookmarksButton;
+
     public BraveRadioButtonGroupAdaptiveToolbarPreference(Context context, AttributeSet attrs) {
         super(context, attrs);
 
@@ -35,21 +43,24 @@ public class BraveRadioButtonGroupAdaptiveToolbarPreference
 
     @Override
     public void onBindViewHolder(PreferenceViewHolder holder) {
+        // Needs to be done before super is called, otherwise the button will be null in getButton
+        // method.
+        mBookmarksButton =
+                (RadioButtonWithDescription) holder.findViewById(R.id.adaptive_option_bookmarks);
+
         super.onBindViewHolder(holder);
 
-        mAutoButton =
-                (RadioButtonWithDescription)
-                        holder.findViewById(R.id.adaptive_option_based_on_usage);
         // We don't have Auto option in Brave, so we hide it.
-        mAutoButton.setVisibility(View.GONE);
-
-        mNewTabButton =
-                (RadioButtonWithDescription) holder.findViewById(R.id.adaptive_option_new_tab);
-        mShareButton = (RadioButtonWithDescription) holder.findViewById(R.id.adaptive_option_share);
+        assert mAutoButton != null : "mAutoButton should not be null at this point";
+        if (mAutoButton != null) {
+            mAutoButton.setVisibility(View.GONE);
+        }
     }
 
     @Override
     public void onCheckedChanged(@Nullable RadioGroup group, int checkedId) {
+        if (!mIsBound) return;
+
         RadioButtonWithDescription defaultButton =
                 DeviceFormFactor.isNonMultiDisplayContextOnTablet(mContext)
                         ? mShareButton
@@ -60,6 +71,26 @@ public class BraveRadioButtonGroupAdaptiveToolbarPreference
             defaultButton.setChecked(mAutoButton.isChecked());
         }
 
+        boolean isOnCheckedChangedHandled = false;
+        if (mBookmarksButton != null && mBookmarksButton.isChecked()) {
+            mSelected = AdaptiveToolbarButtonVariant.BOOKMARKS;
+            isOnCheckedChangedHandled = true;
+        }
+        if (isOnCheckedChangedHandled) {
+            callChangeListener(mSelected);
+            return;
+        }
+
         super.onCheckedChanged(group, checkedId);
     }
+
+    @Override
+    @Nullable RadioButtonWithDescription getButton(@AdaptiveToolbarButtonVariant int variant) {
+        switch (variant) {
+            case AdaptiveToolbarButtonVariant.BOOKMARKS:
+                return mBookmarksButton;
+        }
+
+        return super.getButton(variant);
+    }
 }
diff --git a/build/android/bytecode/BUILD.gn b/build/android/bytecode/BUILD.gn
index 0e049a946d7..2b270ff2346 100644
--- a/build/android/bytecode/BUILD.gn
+++ b/build/android/bytecode/BUILD.gn
@@ -11,6 +11,8 @@ java_binary("java_bytecode_rewriter") {
   sources = [
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveActivityClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarPrefsClassAdapter.java",
+    "//brave/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarStatePredictorClassAdapter.java",
+    "//brave/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarUiCoordinatorClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveAppHooksClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveAppMenuClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveApplicationImplBaseClassAdapter.java",
@@ -101,6 +103,7 @@ java_binary("java_bytecode_rewriter") {
     "//brave/build/android/bytecode/java/org/brave/bytecode/BravePreferenceFragmentClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BravePureJavaExceptionReporterClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveQuickActionSearchWidgetProviderClassAdapter.java",
+    "//brave/build/android/bytecode/java/org/brave/bytecode/BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveRadioButtonGroupHomepagePreferenceClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveReaderModeManagerClassAdapter.java",
     "//brave/build/android/bytecode/java/org/brave/bytecode/BraveReturnToChromeUtilClassAdapter.java",
diff --git a/build/android/bytecode/bytecode_rewriter.gni b/build/android/bytecode/bytecode_rewriter.gni
index 52d186a6fee..ecde8e8be3c 100644
--- a/build/android/bytecode/bytecode_rewriter.gni
+++ b/build/android/bytecode/bytecode_rewriter.gni
@@ -15,6 +15,7 @@ brave_bytecode_jars = [
   "obj/brave/browser/ui/android/logo/java.javac.jar",
   "obj/brave/browser/ui/android/omnibox/java.javac.jar",
   "obj/brave/browser/ui/android/theme/java.javac.jar",
+  "obj/brave/browser/ui/android/toolbar/java.javac.jar",
   "obj/brave/components/browser_ui/notifications/android/java.javac.jar",
   "obj/brave/components/browser_ui/media/android/java.javac.jar",
   "obj/brave/components/browser_ui/site_settings/android/java.javac.jar",
diff --git a/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarStatePredictorClassAdapter.java b/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarStatePredictorClassAdapter.java
new file mode 100644
index 00000000000..74139e800c8
--- /dev/null
+++ b/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarStatePredictorClassAdapter.java
@@ -0,0 +1,25 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.brave.bytecode;
+
+import org.objectweb.asm.ClassVisitor;
+
+public class BraveAdaptiveToolbarStatePredictorClassAdapter extends BraveClassVisitor {
+    static String sAdaptiveToolbarStatePredictor =
+            "org/chromium/chrome/browser/toolbar/adaptive/AdaptiveToolbarStatePredictor";
+    static String sBraveAdaptiveToolbarStatePredictor =
+            "org/chromium/chrome/browser/toolbar/adaptive/BraveAdaptiveToolbarStatePredictor";
+
+    public BraveAdaptiveToolbarStatePredictorClassAdapter(ClassVisitor visitor) {
+        super(visitor);
+
+        changeSuperName(sBraveAdaptiveToolbarStatePredictor, sAdaptiveToolbarStatePredictor);
+
+        makePublicMethod(sAdaptiveToolbarStatePredictor, "isValidSegment");
+
+        redirectConstructor(sAdaptiveToolbarStatePredictor, sBraveAdaptiveToolbarStatePredictor);
+    }
+}
diff --git a/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarUiCoordinatorClassAdapter.java b/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarUiCoordinatorClassAdapter.java
new file mode 100644
index 00000000000..6bef59b8e97
--- /dev/null
+++ b/build/android/bytecode/java/org/brave/bytecode/BraveAdaptiveToolbarUiCoordinatorClassAdapter.java
@@ -0,0 +1,36 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.brave.bytecode;
+
+import org.objectweb.asm.ClassVisitor;
+
+public class BraveAdaptiveToolbarUiCoordinatorClassAdapter extends BraveClassVisitor {
+    static String sAdaptiveToolbarUiCoordinator =
+            "org/chromium/chrome/browser/ui/AdaptiveToolbarUiCoordinator";
+    static String sBraveAdaptiveToolbarUiCoordinator =
+            "org/chromium/chrome/browser/ui/BraveAdaptiveToolbarUiCoordinator";
+
+    public BraveAdaptiveToolbarUiCoordinatorClassAdapter(ClassVisitor visitor) {
+        super(visitor);
+
+        redirectConstructor(sAdaptiveToolbarUiCoordinator, sBraveAdaptiveToolbarUiCoordinator);
+
+        deleteField(sBraveAdaptiveToolbarUiCoordinator, "mContext");
+        makeProtectedField(sAdaptiveToolbarUiCoordinator, "mContext");
+
+        deleteField(sBraveAdaptiveToolbarUiCoordinator, "mActivityTabProvider");
+        makeProtectedField(sAdaptiveToolbarUiCoordinator, "mActivityTabProvider");
+
+        deleteField(sBraveAdaptiveToolbarUiCoordinator, "mModalDialogManagerSupplier");
+        makeProtectedField(sAdaptiveToolbarUiCoordinator, "mModalDialogManagerSupplier");
+
+        deleteField(sBraveAdaptiveToolbarUiCoordinator, "mProfileSupplier");
+        makeProtectedField(sAdaptiveToolbarUiCoordinator, "mProfileSupplier");
+
+        deleteField(sBraveAdaptiveToolbarUiCoordinator, "mAdaptiveToolbarButtonController");
+        makeProtectedField(sAdaptiveToolbarUiCoordinator, "mAdaptiveToolbarButtonController");
+    }
+}
diff --git a/build/android/bytecode/java/org/brave/bytecode/BraveClassAdapter.java b/build/android/bytecode/java/org/brave/bytecode/BraveClassAdapter.java
index 35d52b6b2af..cf31d57715b 100644
--- a/build/android/bytecode/java/org/brave/bytecode/BraveClassAdapter.java
+++ b/build/android/bytecode/java/org/brave/bytecode/BraveClassAdapter.java
@@ -12,6 +12,8 @@ public class BraveClassAdapter {
     public static ClassVisitor createAdapter(ClassVisitor chain) {
         chain = new BraveActivityClassAdapter(chain);
         chain = new BraveAdaptiveToolbarPrefsClassAdapter(chain);
+        chain = new BraveAdaptiveToolbarStatePredictorClassAdapter(chain);
+        chain = new BraveAdaptiveToolbarUiCoordinatorClassAdapter(chain);
         chain = new BraveAppHooksClassAdapter(chain);
         chain = new BraveAppMenuClassAdapter(chain);
         chain = new BraveBaseCustomTabActivityClassAdapter(chain);
@@ -38,6 +40,7 @@ public class BraveClassAdapter {
         chain = new BraveChromeContextMenuPopulatorAdapter(chain);
         chain = new BraveQuickActionSearchWidgetProviderClassAdapter(chain);
         chain = new BraveRadioButtonGroupHomepagePreferenceClassAdapter(chain);
+        chain = new BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter(chain);
         chain = new BraveClearBrowsingDataFragmentAdapter(chain);
         chain = new BraveCommandLineInitUtilClassAdapter(chain);
         chain = new BraveContentSettingsResourcesClassAdapter(chain);
diff --git a/build/android/bytecode/java/org/brave/bytecode/BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter.java b/build/android/bytecode/java/org/brave/bytecode/BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter.java
new file mode 100644
index 00000000000..c50bf8758fd
--- /dev/null
+++ b/build/android/bytecode/java/org/brave/bytecode/BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter.java
@@ -0,0 +1,34 @@
+/* Copyright (c) 2025 The Brave Authors. All rights reserved.
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+package org.brave.bytecode;
+
+import org.objectweb.asm.ClassVisitor;
+
+public class BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter extends BraveClassVisitor {
+    static String sRadioButtonGroupAdaptiveToolbarPreference =
+            "org/chromium/chrome/browser/toolbar/adaptive/settings/RadioButtonGroupAdaptiveToolbarPreference"; // presubmit: ignore-long-line
+    static String sBraveRadioButtonGroupAdaptiveToolbarPreference =
+            "org/chromium/chrome/browser/toolbar/adaptive/settings/BraveRadioButtonGroupAdaptiveToolbarPreference"; // presubmit: ignore-long-line
+
+    public BraveRadioButtonGroupAdaptiveToolbarPreferenceClassAdapter(ClassVisitor visitor) {
+        super(visitor);
+
+        deleteField(sBraveRadioButtonGroupAdaptiveToolbarPreference, "mSelected");
+        makeProtectedField(sRadioButtonGroupAdaptiveToolbarPreference, "mSelected");
+
+        deleteField(sBraveRadioButtonGroupAdaptiveToolbarPreference, "mIsBound");
+        makeProtectedField(sRadioButtonGroupAdaptiveToolbarPreference, "mIsBound");
+
+        deleteField(sBraveRadioButtonGroupAdaptiveToolbarPreference, "mAutoButton");
+        makeProtectedField(sRadioButtonGroupAdaptiveToolbarPreference, "mAutoButton");
+
+        deleteField(sBraveRadioButtonGroupAdaptiveToolbarPreference, "mNewTabButton");
+        makeProtectedField(sRadioButtonGroupAdaptiveToolbarPreference, "mNewTabButton");
+
+        deleteField(sBraveRadioButtonGroupAdaptiveToolbarPreference, "mShareButton");
+        makeProtectedField(sRadioButtonGroupAdaptiveToolbarPreference, "mShareButton");
+    }
+}
diff --git a/patches/chrome-browser-ui-android-toolbar-BUILD.gn.patch b/patches/chrome-browser-ui-android-toolbar-BUILD.gn.patch
index c2ad09eda01..aec1b59ab5e 100644
--- a/patches/chrome-browser-ui-android-toolbar-BUILD.gn.patch
+++ b/patches/chrome-browser-ui-android-toolbar-BUILD.gn.patch
@@ -1,5 +1,5 @@
 diff --git a/chrome/browser/ui/android/toolbar/BUILD.gn b/chrome/browser/ui/android/toolbar/BUILD.gn
-index 6f74e4e33637ec09ebdc586ad407a2ebbbdf4af3..1cd0e8450ed03fa0f2e577cea937e992ce1f404b 100644
+index 6f74e4e33637ec09ebdc586ad407a2ebbbdf4af3..c240048d0741ab51061acc45b54a2ffa5255c0f3 100644
 --- a/chrome/browser/ui/android/toolbar/BUILD.gn
 +++ b/chrome/browser/ui/android/toolbar/BUILD.gn
 @@ -138,6 +138,7 @@ android_library("java") {
@@ -10,3 +10,11 @@ index 6f74e4e33637ec09ebdc586ad407a2ebbbdf4af3..1cd0e8450ed03fa0f2e577cea937e992
  
    deps = [
      ":java_resources",
+@@ -381,6 +382,7 @@ android_resources("java_resources") {
+     "//chrome/browser/ui/android/theme:java_resources",
+     "//components/browser_ui/styles/android:java_resources",
+   ]
++  deps += [ "//brave/browser/ui/android/toolbar:java_resources" ]
+ }
+ 
+ robolectric_library("junit") {
diff --git a/patches/chrome-browser-ui-android-toolbar-adaptive_toolbar_enums.h.patch b/patches/chrome-browser-ui-android-toolbar-adaptive_toolbar_enums.h.patch
new file mode 100644
index 00000000000..592aa1180bc
--- /dev/null
+++ b/patches/chrome-browser-ui-android-toolbar-adaptive_toolbar_enums.h.patch
@@ -0,0 +1,21 @@
+diff --git a/chrome/browser/ui/android/toolbar/adaptive_toolbar_enums.h b/chrome/browser/ui/android/toolbar/adaptive_toolbar_enums.h
+index 346d0fc2b0fb5a9dcb093814511ffb2afa90f463..e721b50f63dfb3b488015d57d0ad0d4636a56e31 100644
+--- a/chrome/browser/ui/android/toolbar/adaptive_toolbar_enums.h
++++ b/chrome/browser/ui/android/toolbar/adaptive_toolbar_enums.h
+@@ -50,7 +50,15 @@ enum class AdaptiveToolbarButtonVariant {
+   // Tab grouping action.
+   kTabGrouping = 16,
+ 
+-  kMaxValue = kTabGrouping,
++  // We have to use multiline patch since this enum is parsed by `java_cpp_enum.py`
++  kBookmarks = kTabGrouping + 1,
++  kHistory = kBookmarks + 1,
++  kDownloads = kHistory + 1,
++  kPlaylist = kDownloads + 1,
++  kLeo = kPlaylist + 1,
++  kWallet = kLeo + 1,
++  kNews = kWallet + 1,
++  kMaxValue = kNews,
+ };
+ // LINT.ThenChange(/tools/metrics/histograms/enums.xml:AdaptiveToolbarButtonVariant)
+ 
diff --git a/patches/chrome-browser-ui-android-toolbar-java-res-layout-radio_button_group_adaptive_toolbar_preference.xml.patch b/patches/chrome-browser-ui-android-toolbar-java-res-layout-radio_button_group_adaptive_toolbar_preference.xml.patch
new file mode 100644
index 00000000000..2fd31b496a0
--- /dev/null
+++ b/patches/chrome-browser-ui-android-toolbar-java-res-layout-radio_button_group_adaptive_toolbar_preference.xml.patch
@@ -0,0 +1,12 @@
+diff --git a/chrome/browser/ui/android/toolbar/java/res/layout/radio_button_group_adaptive_toolbar_preference.xml b/chrome/browser/ui/android/toolbar/java/res/layout/radio_button_group_adaptive_toolbar_preference.xml
+index 64275f3ef256aed1d89513c12e08d5b9ad11b8ca..fe7e6114255c38396a3977e4e6cbfc1d63efd22d 100644
+--- a/chrome/browser/ui/android/toolbar/java/res/layout/radio_button_group_adaptive_toolbar_preference.xml
++++ b/chrome/browser/ui/android/toolbar/java/res/layout/radio_button_group_adaptive_toolbar_preference.xml
+@@ -36,6 +36,7 @@ found in the LICENSE file.
+           app:iconSrc="@drawable/new_tab_icon"
+           app:primaryText="@string/adaptive_toolbar_button_preference_new_tab"/>
+ 
++      <include layout="@layout/brave_adaptive_preference_buttons" />
+       <org.chromium.components.browser_ui.widget.RadioButtonWithDescription
+           android:id="@+id/adaptive_option_share"
+           android:layout_width="match_parent"