diff --git a/browser/brave_browser_process_impl.h b/browser/brave_browser_process_impl.h
index 58d3da2786f..2ef8e27423f 100644
--- a/browser/brave_browser_process_impl.h
+++ b/browser/brave_browser_process_impl.h
@@ -8,7 +8,6 @@
 
 #include <memory>
 
-#include "base/memory/ref_counted.h"
 #include "brave/browser/brave_browser_process.h"
 #include "brave/components/ai_chat/core/common/buildflags/buildflags.h"
 #include "brave/components/brave_component_updater/browser/brave_component.h"
diff --git a/browser/mac/keystone_glue.mm b/browser/mac/keystone_glue.mm
index 6a4ead70f2f..631c1a19084 100644
--- a/browser/mac/keystone_glue.mm
+++ b/browser/mac/keystone_glue.mm
@@ -22,7 +22,6 @@
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/mac/authorization_util.h"
-#include "base/memory/ref_counted.h"
 #include "base/no_destructor.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
diff --git a/browser/mac/sparkle_glue.mm b/browser/mac/sparkle_glue.mm
index 3ef16b94c99..71e9fc64e28 100644
--- a/browser/mac/sparkle_glue.mm
+++ b/browser/mac/sparkle_glue.mm
@@ -16,7 +16,6 @@
 #include "base/check.h"
 #include "base/command_line.h"
 #include "base/logging.h"
-#include "base/memory/ref_counted.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/system/sys_info.h"
 #include "base/task/thread_pool.h"
diff --git a/browser/ui/brave_tooltips/brave_tooltip.h b/browser/ui/brave_tooltips/brave_tooltip.h
index 3e268678887..230956fe49a 100644
--- a/browser/ui/brave_tooltips/brave_tooltip.h
+++ b/browser/ui/brave_tooltips/brave_tooltip.h
@@ -10,7 +10,6 @@
 #include <utility>
 
 #include "base/check.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "brave/browser/ui/brave_tooltips/brave_tooltip_attributes.h"
 #include "brave/browser/ui/brave_tooltips/brave_tooltip_delegate.h"
diff --git a/chromium_src/chrome/browser/browser_process_impl.h b/chromium_src/chrome/browser/browser_process_impl.h
index 549c3947c78..2507038fad7 100644
--- a/chromium_src/chrome/browser/browser_process_impl.h
+++ b/chromium_src/chrome/browser/browser_process_impl.h
@@ -9,7 +9,6 @@
 // Note: Init method name is quite common. To re-define only Init in
 // browser_process_impl.h, all other headers are added.
 #include "base/debug/stack_trace.h"
-#include "base/memory/ref_counted.h"
 #include "base/sequence_checker.h"
 #include "base/timer/timer.h"
 #include "build/build_config.h"
diff --git a/chromium_src/components/update_client/update_checker.h b/chromium_src/components/update_client/update_checker.h
index 3fb73b19b80..6cc449cd62d 100644
--- a/chromium_src/components/update_client/update_checker.h
+++ b/chromium_src/components/update_client/update_checker.h
@@ -15,7 +15,6 @@
 
 #include "base/containers/flat_map.h"
 #include "base/memory/raw_ptr.h"
-#include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "components/update_client/component.h"
 #include "components/update_client/configurator.h"
diff --git a/chromium_src/content/browser/browser_context.cc b/chromium_src/content/browser/browser_context.cc
index 62ddac8f124..f838200ef0f 100644
--- a/chromium_src/content/browser/browser_context.cc
+++ b/chromium_src/content/browser/browser_context.cc
@@ -9,7 +9,6 @@
 #include <string>
 
 #include "base/check.h"
-#include "base/memory/ref_counted.h"
 #include "brave/components/ai_chat/core/common/buildflags/buildflags.h"
 #include "content/browser/blob_storage/chrome_blob_storage_context.h"
 #include "content/browser/dom_storage/dom_storage_context_wrapper.h"
diff --git a/components/assist_ranker/ranker_model_loader_impl_unittest.cc b/components/assist_ranker/ranker_model_loader_impl_unittest.cc
index 4e5e77db13b..bc33ea0ce1f 100644
--- a/components/assist_ranker/ranker_model_loader_impl_unittest.cc
+++ b/components/assist_ranker/ranker_model_loader_impl_unittest.cc
@@ -10,7 +10,6 @@
 #include <vector>
 
 #include "base/files/file_util.h"
-#include "base/memory/ref_counted.h"
 #include "base/notreached.h"
 #include "base/test/bind.h"
 #include "base/test/scoped_feature_list.h"
diff --git a/components/brave_shields/content/browser/domain_block_tab_storage.h b/components/brave_shields/content/browser/domain_block_tab_storage.h
index 233e8ff0775..285c1a3d603 100644
--- a/components/brave_shields/content/browser/domain_block_tab_storage.h
+++ b/components/brave_shields/content/browser/domain_block_tab_storage.h
@@ -6,7 +6,6 @@
 #ifndef BRAVE_COMPONENTS_BRAVE_SHIELDS_CONTENT_BROWSER_DOMAIN_BLOCK_TAB_STORAGE_H_
 #define BRAVE_COMPONENTS_BRAVE_SHIELDS_CONTENT_BROWSER_DOMAIN_BLOCK_TAB_STORAGE_H_
 
-#include "base/memory/ref_counted.h"
 #include "brave/components/brave_shields/content/browser/blocked_domain_1pes_lifetime.h"
 #include "content/public/browser/web_contents_user_data.h"
 
diff --git a/components/brave_wallet/browser/swap_service_unittest.cc b/components/brave_wallet/browser/swap_service_unittest.cc
index 271dbfe6e7d..d7fc0b7d420 100644
--- a/components/brave_wallet/browser/swap_service_unittest.cc
+++ b/components/brave_wallet/browser/swap_service_unittest.cc
@@ -10,7 +10,6 @@
 #include <utility>
 #include <vector>
 
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/test/bind.h"
 #include "base/test/mock_callback.h"
diff --git a/components/brave_wallet/browser/zcash/zcash_discover_next_unused_zcash_address_task.h b/components/brave_wallet/browser/zcash/zcash_discover_next_unused_zcash_address_task.h
index 6ceb9757239..a80fabdaed1 100644
--- a/components/brave_wallet/browser/zcash/zcash_discover_next_unused_zcash_address_task.h
+++ b/components/brave_wallet/browser/zcash/zcash_discover_next_unused_zcash_address_task.h
@@ -8,6 +8,7 @@
 
 #include <string>
 
+#include "base/memory/ref_counted.h"
 #include "brave/components/brave_wallet/browser/zcash/zcash_wallet_service.h"
 #include "brave/components/brave_wallet/common/brave_wallet.mojom.h"
 
diff --git a/components/brave_wallet/browser/zcash/zcash_get_transparent_utxos_context.h b/components/brave_wallet/browser/zcash/zcash_get_transparent_utxos_context.h
index e560c8d4c89..6b526ab83cc 100644
--- a/components/brave_wallet/browser/zcash/zcash_get_transparent_utxos_context.h
+++ b/components/brave_wallet/browser/zcash/zcash_get_transparent_utxos_context.h
@@ -9,6 +9,7 @@
 #include <string>
 
 #include "base/functional/callback.h"
+#include "base/memory/ref_counted.h"
 #include "brave/components/brave_wallet/browser/zcash/zcash_wallet_service.h"
 #include "brave/components/brave_wallet/common/brave_wallet.mojom.h"
 
diff --git a/components/brave_wallet/browser/zcash/zcash_rpc.h b/components/brave_wallet/browser/zcash/zcash_rpc.h
index 2886ed3938f..5d5c05b3f65 100644
--- a/components/brave_wallet/browser/zcash/zcash_rpc.h
+++ b/components/brave_wallet/browser/zcash/zcash_rpc.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "base/functional/callback.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/types/expected.h"
 #include "brave/components/brave_wallet/browser/network_manager.h"
diff --git a/components/brave_wallet/common/test_utils.h b/components/brave_wallet/common/test_utils.h
index 63031974a32..fed345fe638 100644
--- a/components/brave_wallet/common/test_utils.h
+++ b/components/brave_wallet/common/test_utils.h
@@ -12,6 +12,7 @@
 #include <vector>
 
 #include "base/check.h"
+#include "base/memory/ref_counted.h"
 #include "base/strings/string_number_conversions.h"
 #include "brave/components/brave_wallet/common/brave_wallet.mojom.h"
 #include "testing/gmock/include/gmock/gmock-matchers.h"
diff --git a/components/omnibox/browser/brave_local_history_zero_suggest_provider_unittest.cc b/components/omnibox/browser/brave_local_history_zero_suggest_provider_unittest.cc
index bfc884403f6..28c56841637 100644
--- a/components/omnibox/browser/brave_local_history_zero_suggest_provider_unittest.cc
+++ b/components/omnibox/browser/brave_local_history_zero_suggest_provider_unittest.cc
@@ -12,7 +12,6 @@
 #include <utility>
 
 #include "base/check.h"
-#include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/task_environment.h"
diff --git a/components/omnibox/browser/commander_provider.h b/components/omnibox/browser/commander_provider.h
index 671a41c62cc..75f47be5cb7 100644
--- a/components/omnibox/browser/commander_provider.h
+++ b/components/omnibox/browser/commander_provider.h
@@ -8,6 +8,7 @@
 
 #include <string>
 
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observation.h"
 #include "brave/components/commander/browser/commander_frontend_delegate.h"
diff --git a/components/omnibox/browser/leo_provider.h b/components/omnibox/browser/leo_provider.h
index f3c7fe5e721..f91a8ff3866 100644
--- a/components/omnibox/browser/leo_provider.h
+++ b/components/omnibox/browser/leo_provider.h
@@ -6,6 +6,7 @@
 #ifndef BRAVE_COMPONENTS_OMNIBOX_BROWSER_LEO_PROVIDER_H_
 #define BRAVE_COMPONENTS_OMNIBOX_BROWSER_LEO_PROVIDER_H_
 
+#include "base/memory/ref_counted.h"
 #include "components/omnibox/browser/autocomplete_provider.h"
 
 class AutocompleteProviderClient;
diff --git a/components/p3a/constellation_helper.h b/components/p3a/constellation_helper.h
index ef884908518..865779caa7b 100644
--- a/components/p3a/constellation_helper.h
+++ b/components/p3a/constellation_helper.h
@@ -10,7 +10,6 @@
 #include <string>
 
 #include "base/functional/callback.h"
-#include "base/memory/ref_counted.h"
 #include "brave/components/p3a/constellation/rs/cxx/src/lib.rs.h"
 #include "brave/components/p3a/metric_log_type.h"
 #include "brave/components/p3a/star_randomness_meta.h"
diff --git a/components/p3a/histograms_braveizer.cc b/components/p3a/histograms_braveizer.cc
index 9f3b529ff70..1a276f9583f 100644
--- a/components/p3a/histograms_braveizer.cc
+++ b/components/p3a/histograms_braveizer.cc
@@ -9,7 +9,6 @@
 #include <string>
 
 #include "base/functional/bind.h"
-#include "base/memory/ref_counted.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/statistics_recorder.h"
 #include "brave/components/p3a_utils/bucket.h"
diff --git a/components/p3a/message_manager.h b/components/p3a/message_manager.h
index 3f9b5161ffe..1fb5fd33a05 100644
--- a/components/p3a/message_manager.h
+++ b/components/p3a/message_manager.h
@@ -15,7 +15,6 @@
 #include "base/functional/callback.h"
 #include "base/memory/raw_ptr.h"
 #include "base/memory/raw_ref.h"
-#include "base/memory/ref_counted.h"
 #include "base/timer/timer.h"
 #include "brave/components/p3a/metric_log_store.h"
 #include "brave/components/p3a/metric_log_type.h"
diff --git a/components/p3a/star_randomness_points.h b/components/p3a/star_randomness_points.h
index a2a83a74beb..af7a69f3a35 100644
--- a/components/p3a/star_randomness_points.h
+++ b/components/p3a/star_randomness_points.h
@@ -12,7 +12,6 @@
 #include "base/containers/flat_map.h"
 #include "base/functional/callback.h"
 #include "base/memory/raw_ptr.h"
-#include "base/memory/ref_counted.h"
 #include "brave/components/p3a/constellation/rs/cxx/src/lib.rs.h"
 #include "brave/components/p3a/metric_log_type.h"
 #include "brave/components/p3a/star_randomness_meta.h"
diff --git a/components/p3a/uploader.h b/components/p3a/uploader.h
index fbfb5e181b3..b5d5006f992 100644
--- a/components/p3a/uploader.h
+++ b/components/p3a/uploader.h
@@ -12,7 +12,6 @@
 #include "base/containers/flat_map.h"
 #include "base/functional/callback.h"
 #include "base/memory/raw_ptr.h"
-#include "base/memory/ref_counted.h"
 #include "brave/components/p3a/metric_log_type.h"
 
 namespace network {
diff --git a/components/request_otr/browser/request_otr_storage_tab_helper.h b/components/request_otr/browser/request_otr_storage_tab_helper.h
index 626cbf2af15..c0f762737bf 100644
--- a/components/request_otr/browser/request_otr_storage_tab_helper.h
+++ b/components/request_otr/browser/request_otr_storage_tab_helper.h
@@ -6,7 +6,6 @@
 #ifndef BRAVE_COMPONENTS_REQUEST_OTR_BROWSER_REQUEST_OTR_STORAGE_TAB_HELPER_H_
 #define BRAVE_COMPONENTS_REQUEST_OTR_BROWSER_REQUEST_OTR_STORAGE_TAB_HELPER_H_
 
-#include "base/memory/ref_counted.h"
 #include "brave/components/brave_shields/content/browser/blocked_domain_1pes_lifetime.h"
 #include "content/public/browser/web_contents_user_data.h"
 
diff --git a/ios/app/brave_core_main.mm b/ios/app/brave_core_main.mm
index 3127428e757..a99640e605b 100644
--- a/ios/app/brave_core_main.mm
+++ b/ios/app/brave_core_main.mm
@@ -20,7 +20,6 @@
 #include "base/i18n/icu_util.h"
 #include "base/logging.h"
 #include "base/logging/log_severity.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/path_service.h"
 #include "base/strings/sys_string_conversions.h"
diff --git a/ios/browser/api/bookmarks/exporter/bookmark_html_writer.cc b/ios/browser/api/bookmarks/exporter/bookmark_html_writer.cc
index 25dd3322473..0a798c6ac0f 100644
--- a/ios/browser/api/bookmarks/exporter/bookmark_html_writer.cc
+++ b/ios/browser/api/bookmarks/exporter/bookmark_html_writer.cc
@@ -25,6 +25,7 @@
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/raw_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "base/notreached.h"
 #include "base/strings/escape.h"
 #include "base/strings/string_number_conversions.h"
diff --git a/ios/browser/api/certificate/utils/brave_certificate_x509_utils.cc b/ios/browser/api/certificate/utils/brave_certificate_x509_utils.cc
index 70d01edad80..c4875d9faed 100644
--- a/ios/browser/api/certificate/utils/brave_certificate_x509_utils.cc
+++ b/ios/browser/api/certificate/utils/brave_certificate_x509_utils.cc
@@ -8,7 +8,6 @@
 #include <string_view>
 
 #include "base/check.h"
-#include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 #include "net/cert/ct_objects_extractor.h"
diff --git a/ios/browser/api/certificate/utils/brave_certificate_x509_utils.h b/ios/browser/api/certificate/utils/brave_certificate_x509_utils.h
index b4a04e3ac67..d84a4ab6a7b 100644
--- a/ios/browser/api/certificate/utils/brave_certificate_x509_utils.h
+++ b/ios/browser/api/certificate/utils/brave_certificate_x509_utils.h
@@ -9,7 +9,6 @@
 #include <string>
 #include <vector>
 
-#include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "net/cert/signed_certificate_timestamp.h"
 #include "third_party/boringssl/src/include/openssl/base.h"
diff --git a/ios/browser/api/net/certificate_utility.mm b/ios/browser/api/net/certificate_utility.mm
index ec9b6a098eb..c2d15942bd1 100644
--- a/ios/browser/api/net/certificate_utility.mm
+++ b/ios/browser/api/net/certificate_utility.mm
@@ -15,7 +15,6 @@
 #include "base/containers/span.h"
 #include "base/functional/bind.h"
 #include "base/logging.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/scoped_refptr.h"
 #include "base/strings/sys_string_conversions.h"
 #include "net/base/net_errors.h"
diff --git a/ios/browser/ui/webui/favicon_source.h b/ios/browser/ui/webui/favicon_source.h
index f0843009b12..ddbc6a60f0e 100644
--- a/ios/browser/ui/webui/favicon_source.h
+++ b/ios/browser/ui/webui/favicon_source.h
@@ -10,7 +10,6 @@
 #include <string>
 
 #include "base/memory/raw_ptr.h"
-#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "components/favicon/core/favicon_service.h"
diff --git a/utility/importer/brave_profile_import_impl.cc b/utility/importer/brave_profile_import_impl.cc
index f0e815c0cc3..ba4c61dd34c 100644
--- a/utility/importer/brave_profile_import_impl.cc
+++ b/utility/importer/brave_profile_import_impl.cc
@@ -12,7 +12,6 @@
 #include "base/command_line.h"
 #include "base/functional/bind.h"
 #include "base/location.h"
-#include "base/memory/ref_counted.h"
 #include "base/notreached.h"
 #include "base/task/single_thread_task_runner.h"
 #include "base/threading/thread.h"
diff --git a/utility/importer/chrome_importer.cc b/utility/importer/chrome_importer.cc
index af60d744415..4ab80b1da88 100644
--- a/utility/importer/chrome_importer.cc
+++ b/utility/importer/chrome_importer.cc
@@ -13,7 +13,6 @@
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
-#include "base/memory/ref_counted.h"
 #include "base/strings/utf_string_conversions.h"
 #include "brave/common/importer/scoped_copy_file.h"
 #include "brave/grit/brave_generated_resources.h"