diff --git a/changes/48792-new-user-dropdown-layout-shift b/changes/48792-new-user-dropdown-layout-shift
new file mode 100644
index 0000000000..de8d53cd00
--- /dev/null
+++ b/changes/48792-new-user-dropdown-layout-shift
@@ -0,0 +1 @@
+* Fixed the page content shifting left when opening a role dropdown near the bottom of the New user form (`/settings/users/new/human`). Dropdowns now flip upward when there's no room below the trigger.
diff --git a/frontend/components/forms/fields/DropdownWrapper/DropdownWrapper.tsx b/frontend/components/forms/fields/DropdownWrapper/DropdownWrapper.tsx
index 18391aeea9..23d6f3acb6 100644
--- a/frontend/components/forms/fields/DropdownWrapper/DropdownWrapper.tsx
+++ b/frontend/components/forms/fields/DropdownWrapper/DropdownWrapper.tsx
@@ -15,6 +15,7 @@ import Select, {
   components,
   DropdownIndicatorProps,
   GroupBase,
+  MenuPlacement,
   OptionProps,
   PropsValue,
   SingleValue,
@@ -130,6 +131,10 @@ export interface IDropdownWrapper {
    * not infer any of these on its own; without a value here screen readers
    * announce a bare "combobox". */
   ariaLabel?: string;
+  /** Defaults to "auto" so a menu near the viewport bottom flips upward
+   * instead of stretching the page and triggering a scrollbar-driven
+   * layout shift. */
+  menuPlacement?: MenuPlacement;
 }
 
 const getOptionBackgroundColor = (
@@ -376,6 +381,7 @@ const DropdownWrapper = ({
   nowrapMenu,
   customNoOptionsMessage,
   ariaLabel,
+  menuPlacement = "auto",
 }: IDropdownWrapper) => {
   const wrapperClassNames = classnames(baseClass, className, {
     [`${baseClass}__table-filter`]: variant === "table-filter",
@@ -474,6 +480,7 @@ const DropdownWrapper = ({
         tabIndex={isDisabled ? -1 : 0} // Ensures disabled dropdown has no keyboard accessibility
         placeholder={placeholder}
         onMenuOpen={onMenuOpen}
+        menuPlacement={menuPlacement}
         // Resolve accessible name: explicit prop wins, otherwise fall back
         // to the placeholder (usually "Select X"), otherwise the required
         // `name` (often a kebab-case identifier — least readable but