diff --git a/.changeset/new-shrimps-appear.md b/.changeset/new-shrimps-appear.md
new file mode 100644
index 00000000000..d0dbb245d93
--- /dev/null
+++ b/.changeset/new-shrimps-appear.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': major
+---
+
+Remove sx prop support from the Select component.
diff --git a/packages/react/src/Select/Select.stories.tsx b/packages/react/src/Select/Select.stories.tsx
index 84e1f3170c8..27c44d11d76 100644
--- a/packages/react/src/Select/Select.stories.tsx
+++ b/packages/react/src/Select/Select.stories.tsx
@@ -15,7 +15,7 @@ export default {
   component: Select,
   parameters: {
     controls: {
-      exclude: ['hasTrailingAction', 'monospace', 'isInputFocused', 'sx'],
+      exclude: ['hasTrailingAction', 'monospace', 'isInputFocused'],
     },
   },
 } as Meta
diff --git a/packages/react/src/Select/Select.tsx b/packages/react/src/Select/Select.tsx
index 774573fc260..ad5b2fec98f 100644
--- a/packages/react/src/Select/Select.tsx
+++ b/packages/react/src/Select/Select.tsx
@@ -44,7 +44,6 @@ const Select = React.forwardRef<HTMLSelectElement, SelectProps>(
       size,
       required,
       validationStatus,
-      sx,
       ...rest
     }: SelectProps,
     ref,
@@ -56,7 +55,6 @@ const Select = React.forwardRef<HTMLSelectElement, SelectProps>(
         size={size}
         validationStatus={validationStatus}
         className={clsx(classes.TextInputWrapper, className)}
-        sx={sx}
       >
         <select
           {...rest}