diff --git a/.changeset/curvy-windows-walk.md b/.changeset/curvy-windows-walk.md
new file mode 100644
index 00000000000..a48f52895ab
--- /dev/null
+++ b/.changeset/curvy-windows-walk.md
@@ -0,0 +1,5 @@
+---
+"@primer/react": patch
+---
+
+SelectPanel: Add `role="dialog"` to overlay
diff --git a/src/SelectPanel/SelectPanel.tsx b/src/SelectPanel/SelectPanel.tsx
index b0d53fc760c..b8604f0a344 100644
--- a/src/SelectPanel/SelectPanel.tsx
+++ b/src/SelectPanel/SelectPanel.tsx
@@ -152,7 +152,7 @@ export function SelectPanel({
       open={open}
       onOpen={onOpen}
       onClose={onClose}
-      overlayProps={overlayProps}
+      overlayProps={{role: 'dialog', ...overlayProps}}
       focusTrapSettings={focusTrapSettings}
       focusZoneSettings={focusZoneSettings}
     >