diff --git a/change/@fluentui-react-dialog-f9dfeb62-a482-488e-920e-6964233f20f5.json b/change/@fluentui-react-dialog-f9dfeb62-a482-488e-920e-6964233f20f5.json
new file mode 100644
index 0000000000000..2e3803712c9ad
--- /dev/null
+++ b/change/@fluentui-react-dialog-f9dfeb62-a482-488e-920e-6964233f20f5.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "fix: add default heading role and level to DialogTitle",
+  "packageName": "@fluentui/react-dialog",
+  "email": "sarah.higley@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react-components/react-dialog/src/components/DialogTitle/__snapshots__/DialogTitle.test.tsx.snap b/packages/react-components/react-dialog/src/components/DialogTitle/__snapshots__/DialogTitle.test.tsx.snap
index c32d25e64a3c6..8c158848eed4a 100644
--- a/packages/react-components/react-dialog/src/components/DialogTitle/__snapshots__/DialogTitle.test.tsx.snap
+++ b/packages/react-components/react-dialog/src/components/DialogTitle/__snapshots__/DialogTitle.test.tsx.snap
@@ -3,7 +3,9 @@
 exports[`DialogTitle renders a default state 1`] = `
 <div>
   <div
+    aria-level="2"
     class="fui-DialogTitle"
+    role="heading"
   >
     Default DialogTitle
   </div>
diff --git a/packages/react-components/react-dialog/src/components/DialogTitle/useDialogTitle.tsx b/packages/react-components/react-dialog/src/components/DialogTitle/useDialogTitle.tsx
index df669cb699cc3..324a37f325dd1 100644
--- a/packages/react-components/react-dialog/src/components/DialogTitle/useDialogTitle.tsx
+++ b/packages/react-components/react-dialog/src/components/DialogTitle/useDialogTitle.tsx
@@ -29,6 +29,8 @@ export const useDialogTitle_unstable = (props: DialogTitleProps, ref: React.Ref<
     root: getNativeElementProps(as ?? 'div', {
       ref,
       id: useDialogContext_unstable(ctx => ctx.dialogTitleId),
+      role: 'heading',
+      'aria-level': '2',
       ...props,
     }),
     action: resolveShorthand(action, {