diff --git a/.changeset/perf-dialog-stable-context.md b/.changeset/perf-dialog-stable-context.md
new file mode 100644
index 00000000000..d0ec3c95caf
--- /dev/null
+++ b/.changeset/perf-dialog-stable-context.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': patch
+---
+
+Use stable object reference for DialogContext value to prevent unnecessary re-renders
diff --git a/packages/react/src/Dialog/Dialog.tsx b/packages/react/src/Dialog/Dialog.tsx
index 2a070a88d66..5c5e4c2373a 100644
--- a/packages/react/src/Dialog/Dialog.tsx
+++ b/packages/react/src/Dialog/Dialog.tsx
@@ -242,6 +242,7 @@ const defaultFooterButtons: Array<DialogButtonProps> = []
 
 // useful to determine whether we're inside a Dialog from a nested component
 export const DialogContext = React.createContext<object | undefined>(undefined)
+const DIALOG_CONTEXT_VALUE = Object.freeze({})
 
 const _Dialog = React.forwardRef<HTMLDivElement, React.PropsWithChildren<DialogProps>>((props, forwardedRef) => {
   const {
@@ -348,7 +349,7 @@ const _Dialog = React.forwardRef<HTMLDivElement, React.PropsWithChildren<DialogP
         )
 
   return (
-    <DialogContext.Provider value={{}}>
+    <DialogContext.Provider value={DIALOG_CONTEXT_VALUE}>
       <Portal>
         <div
           ref={backdropRef}