diff --git a/packages/widgets/src/accordionlayout.ts b/packages/widgets/src/accordionlayout.ts
index a4247605f..fa2da95dc 100644
--- a/packages/widgets/src/accordionlayout.ts
+++ b/packages/widgets/src/accordionlayout.ts
@@ -4,6 +4,7 @@
  */
 
 import { ArrayExt } from '@lumino/algorithm';
+import { UUID } from '@lumino/coreutils';
 import { SplitLayout } from './splitlayout';
 import { Title } from './title';
 import Utils from './utils';
@@ -83,6 +84,28 @@ export class AccordionLayout extends SplitLayout {
     this.parent!.node.replaceChild(newTitle, oldTitle);
   }
 
+  /**
+   * Insert a widget into the layout at the specified index.
+   *
+   * @param index - The index at which to insert the widget.
+   *
+   * @param widget - The widget to insert into the layout.
+   *
+   * #### Notes
+   * The index will be clamped to the bounds of the widgets.
+   *
+   * If the widget is already added to the layout, it will be moved.
+   *
+   * #### Undefined Behavior
+   * An `index` which is non-integral.
+   */
+  insertWidget(index: number, widget: Widget): void {
+    if (!widget.id) {
+      widget.id = `id-${UUID.uuid4()}`;
+    }
+    super.insertWidget(index, widget);
+  }
+
   /**
    * Attach a widget to the parent's DOM node.
    *
diff --git a/packages/widgets/src/accordionpanel.ts b/packages/widgets/src/accordionpanel.ts
index 79a4c1b79..37bee5c6c 100644
--- a/packages/widgets/src/accordionpanel.ts
+++ b/packages/widgets/src/accordionpanel.ts
@@ -401,7 +401,6 @@ export namespace AccordionPanel {
      */
     createSectionTitle(data: Title<Widget>): HTMLElement {
       const handle = document.createElement('h3');
-      handle.setAttribute('role', 'tab');
       handle.setAttribute('tabindex', '0');
       handle.id = this.createTitleKey(data);
       handle.className = this.titleClassName;
diff --git a/packages/widgets/tests/src/accordionpanel.spec.ts b/packages/widgets/tests/src/accordionpanel.spec.ts
index 869e6079d..b93a22bdc 100644
--- a/packages/widgets/tests/src/accordionpanel.spec.ts
+++ b/packages/widgets/tests/src/accordionpanel.spec.ts
@@ -77,6 +77,36 @@ describe('@lumino/widgets', () => {
       });
     });
 
+    describe('#accessibility()', () => {
+      it('should create a widget ID if it does not exist', () => {
+        let panel = new LogAccordionPanel();
+        let w1 = new Widget();
+        let w2 = new Widget();
+
+        // Expects a widget ID to be created.
+        expect(w1.id).to.be.empty;
+        panel.addWidget(w1);
+        expect(w1.id).to.match(/id-[0-9a-z\-]+/);
+
+        // Expects the widget ID to be unchanged.
+        w2.id = 'test-id';
+        panel.addWidget(w2);
+        expect(w2.id).to.equal('test-id');
+      });
+
+      it('should link the widget to its title', () => {
+        let layout = new AccordionLayout({ renderer });
+        let panel = new LogAccordionPanel({ layout });
+        let w = new Widget();
+        panel.addWidget(w);
+
+        expect(layout.titles[0].getAttribute('aria-controls')).to.equal(w.id);
+        expect(layout.widgets[0].node.getAttribute('aria-labelledby')).to.equal(
+          layout.titles[0].id
+        );
+      });
+    });
+
     describe('#dispose()', () => {
       it('should dispose of the resources held by the panel', () => {
         let panel = new LogAccordionPanel();
diff --git a/review/api/widgets.api.md b/review/api/widgets.api.md
index fca3f1f82..de211d650 100644
--- a/review/api/widgets.api.md
+++ b/review/api/widgets.api.md
@@ -24,6 +24,7 @@ export class AccordionLayout extends SplitLayout {
     protected attachWidget(index: number, widget: Widget): void;
     protected detachWidget(index: number, widget: Widget): void;
     dispose(): void;
+    insertWidget(index: number, widget: Widget): void;
     protected moveWidget(fromIndex: number, toIndex: number, widget: Widget): void;
     readonly renderer: AccordionLayout.IRenderer;
     get titles(): ReadonlyArray<HTMLElement>;