diff --git a/.changeset/neat-pigs-hunt.md b/.changeset/neat-pigs-hunt.md
new file mode 100644
index 0000000000..03bf241592
--- /dev/null
+++ b/.changeset/neat-pigs-hunt.md
@@ -0,0 +1,5 @@
+---
+'slate-react': patch
+---
+
+Add `aria-multiline` attribute to textbox editor
diff --git a/packages/slate-react/src/components/editable.tsx b/packages/slate-react/src/components/editable.tsx
index 4efade8d8b..a55e35c16f 100644
--- a/packages/slate-react/src/components/editable.tsx
+++ b/packages/slate-react/src/components/editable.tsx
@@ -804,6 +804,7 @@ export const Editable = (props: EditableProps) => {
         <RestoreDOM node={ref} receivedUserInput={receivedUserInput}>
           <Component
             role={readOnly ? undefined : 'textbox'}
+            aria-multiline={readOnly ? undefined : true}
             {...attributes}
             // COMPAT: Certain browsers don't support the `beforeinput` event, so we'd
             // have to use hacks to make these replacement-based features work.