diff --git a/.changeset/wicked-ties-walk.md b/.changeset/wicked-ties-walk.md
new file mode 100644
index 00000000000..e6c0e7312e9
--- /dev/null
+++ b/.changeset/wicked-ties-walk.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+Add `className` prop support to `Textarea` component
diff --git a/packages/react/src/Textarea/Textarea.docs.json b/packages/react/src/Textarea/Textarea.docs.json
index 7e309244572..310aa038d13 100644
--- a/packages/react/src/Textarea/Textarea.docs.json
+++ b/packages/react/src/Textarea/Textarea.docs.json
@@ -60,7 +60,12 @@
     {
       "name": "sx",
       "type": "SystemStyleObject"
+    },
+    {
+      "name": "className",
+      "type": "string | undefined",
+      "description": "The className to apply to the wrapper element"
     }
   ],
   "subcomponents": []
-}
+}
\ No newline at end of file
diff --git a/packages/react/src/Textarea/Textarea.tsx b/packages/react/src/Textarea/Textarea.tsx
index 2e58a7ef26b..ff39ed078b9 100644
--- a/packages/react/src/Textarea/Textarea.tsx
+++ b/packages/react/src/Textarea/Textarea.tsx
@@ -31,6 +31,10 @@ export type TextareaProps = {
    * apply a high contrast color to background
    */
   contrast?: boolean
+  /**
+   * The className to apply to the wrapper element
+   */
+  className?: string
 } & TextareaHTMLAttributes<HTMLTextAreaElement> &
   SxProp
 
@@ -79,6 +83,7 @@ const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
       resize = DEFAULT_TEXTAREA_RESIZE,
       block,
       contrast,
+      className,
       ...rest
     }: TextareaProps,
     ref,
@@ -90,6 +95,7 @@ const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
         disabled={disabled}
         block={block}
         contrast={contrast}
+        className={className}
       >
         <StyledTextarea
           value={value}