diff --git a/modules/mapbox/src/deck-widget-control.ts b/modules/mapbox/src/deck-widget-control.ts
new file mode 100644
index 00000000000..7719e19fc19
--- /dev/null
+++ b/modules/mapbox/src/deck-widget-control.ts
@@ -0,0 +1,78 @@
+// deck.gl
+// SPDX-License-Identifier: MIT
+// Copyright (c) vis.gl contributors
+
+import type {Widget} from '@deck.gl/core';
+import type {IControl, ControlPosition, Map} from './types';
+
+/**
+ * Wraps a deck.gl Widget as a Mapbox/MapLibre IControl.
+ *
+ * This enables deck widgets to be positioned alongside native map controls
+ * in the same DOM container, preventing overlap issues.
+ *
+ * @internal Used by MapboxOverlay for widgets with `viewId: 'mapbox'`.
+ */
+export class DeckWidgetControl implements IControl {
+  private _widget: Widget;
+  private _container: HTMLDivElement | null = null;
+
+  constructor(widget: Widget) {
+    this._widget = widget;
+  }
+
+  /**
+   * Called when the control is added to the map.
+   * Creates a container element that will be positioned by Mapbox/MapLibre,
+   * and sets the widget's _container prop so WidgetManager appends the widget here.
+   */
+  onAdd(map: Map): HTMLElement {
+    this._container = document.createElement('div');
+    this._container.className = 'maplibregl-ctrl mapboxgl-ctrl deck-widget-ctrl';
+
+    // Set _container so WidgetManager appends the widget's rootElement here
+    // instead of in its own overlay container
+    this._widget.props._container = this._container;
+
+    return this._container;
+  }
+
+  /**
+   * Called when the control is removed from the map.
+   */
+  onRemove(): void {
+    // Clear the _container reference so widget doesn't try to append there
+    if (this._widget.props._container === this._container) {
+      this._widget.props._container = null;
+    }
+    this._container?.remove();
+    this._container = null;
+  }
+
+  /**
+   * Returns the default position for this control.
+   * Uses the widget's placement, which conveniently matches Mapbox control positions.
+   * Note: 'fill' placement is not supported by Mapbox controls, defaults to 'top-left'.
+   */
+  getDefaultPosition(): ControlPosition {
+    const placement = this._widget.placement;
+    // 'fill' is not a valid Mapbox control position
+    if (!placement || placement === 'fill') {
+      return 'top-left';
+    }
+    return placement;
+  }
+
+  /** Returns the wrapped widget */
+  get widget(): Widget {
+    return this._widget;
+  }
+
+  /**
+   * Updates the wrapped widget reference.
+   * Used when reusing this control for a new widget instance with the same id.
+   */
+  setWidget(widget: Widget): void {
+    this._widget = widget;
+  }
+}
diff --git a/modules/mapbox/src/mapbox-overlay.ts b/modules/mapbox/src/mapbox-overlay.ts
index 8241f297fe4..3d858ccf95a 100644
--- a/modules/mapbox/src/mapbox-overlay.ts
+++ b/modules/mapbox/src/mapbox-overlay.ts
@@ -11,10 +11,11 @@ import {
   getDefaultParameters,
   getProjection
 } from './deck-utils';
+import {DeckWidgetControl} from './deck-widget-control';
 
 import type {Map, IControl, MapMouseEvent, ControlPosition} from './types';
 import type {MjolnirGestureEvent, MjolnirPointerEvent} from 'mjolnir.js';
-import type {DeckProps, LayersList} from '@deck.gl/core';
+import type {DeckProps, LayersList, Widget} from '@deck.gl/core';
 
 import {resolveLayers} from './resolve-layers';
 import {resolveLayerGroups} from './resolve-layer-groups';
@@ -55,6 +56,8 @@ export default class MapboxOverlay implements IControl {
   private _interleaved: boolean;
   private _renderLayersInGroups: boolean;
   private _lastMouseDownPoint?: {x: number; y: number; clientX: number; clientY: number};
+  /** IControl wrappers for widgets with viewId: 'mapbox' */
+  private _widgetControls: DeckWidgetControl[] = [];
 
   constructor(props: MapboxOverlayProps) {
     const {interleaved = false} = props;
@@ -79,6 +82,12 @@ export default class MapboxOverlay implements IControl {
       this._resolveLayers(this._map, this._deck, this._props.layers, props.layers);
     }
 
+    // Process widgets with viewId: 'mapbox' before updating props
+    // This must happen before deck.setProps so _container is set
+    if (props.widgets !== undefined) {
+      this._processWidgets(props.widgets);
+    }
+
     Object.assign(this._props, this.filterProps(props));
 
     if (this._deck && this._map) {
@@ -112,6 +121,10 @@ export default class MapboxOverlay implements IControl {
     });
     this._container = container;
 
+    // Process widgets with viewId: 'mapbox' BEFORE creating Deck
+    // so _container is set when WidgetManager initializes
+    this._processWidgets(this._props.widgets);
+
     this._deck = new Deck<any>({
       ...this._props,
       parent: container,
@@ -143,6 +156,11 @@ export default class MapboxOverlay implements IControl {
         'Incompatible basemap library. See: https://deck.gl/docs/api-reference/mapbox/overview#compatibility'
       )();
     }
+
+    // Process widgets with viewId: 'mapbox' BEFORE creating Deck
+    // so _container is set when WidgetManager initializes
+    this._processWidgets(this._props.widgets);
+
     this._deck = getDeckInstance({
       map,
       deck: new Deck({
@@ -171,11 +189,73 @@ export default class MapboxOverlay implements IControl {
     }
   }
 
+  /**
+   * Process widgets and wrap those with viewId: 'mapbox' as IControls.
+   * This enables deck widgets to be positioned in Mapbox's control container
+   * alongside native map controls, preventing overlap.
+   *
+   * Matches widgets by id (like WidgetManager) to handle new instances with same id.
+   * Only recreates controls when placement changes to avoid orphaning the widget's
+   * rootElement when the container is removed from the DOM.
+   */
+  private _processWidgets(widgets: Widget[] | undefined): void {
+    const map = this._map;
+    if (!map) return;
+
+    const mapboxWidgets = widgets?.filter(w => w && w.viewId === 'mapbox') ?? [];
+
+    // Build a map of existing controls by widget id
+    const existingControlsById = new Map<string, DeckWidgetControl>();
+    for (const control of this._widgetControls) {
+      existingControlsById.set(control.widget.id, control);
+    }
+
+    const newControls: DeckWidgetControl[] = [];
+
+    for (const widget of mapboxWidgets) {
+      const existingControl = existingControlsById.get(widget.id);
+
+      if (existingControl && existingControl.widget.placement === widget.placement) {
+        // Same id and placement - reuse existing control to preserve container
+        // Set _container on the new widget instance so WidgetManager uses it
+        widget.props._container = existingControl.widget.props._container;
+        // Update the control's widget reference to the new instance
+        existingControl.setWidget(widget);
+        newControls.push(existingControl);
+        existingControlsById.delete(widget.id);
+      } else {
+        // New widget or placement changed - need a new control
+        if (existingControl) {
+          // Placement changed - remove old control first
+          map.removeControl(existingControl);
+          existingControlsById.delete(widget.id);
+        }
+        const control = new DeckWidgetControl(widget);
+        // Add to map - this calls onAdd() synchronously, setting _container
+        map.addControl(control, control.getDefaultPosition());
+        newControls.push(control);
+      }
+    }
+
+    // Remove controls for widgets that are no longer present
+    for (const control of existingControlsById.values()) {
+      map.removeControl(control);
+    }
+
+    this._widgetControls = newControls;
+  }
+
   /** Called when the control is removed from a map */
   onRemove(): void {
     const map = this._map;
 
     if (map) {
+      // Remove widget controls
+      for (const control of this._widgetControls) {
+        map.removeControl(control);
+      }
+      this._widgetControls = [];
+
       if (this._interleaved) {
         this._onRemoveInterleaved(map);
       } else {
diff --git a/modules/test-utils/src/utils/setup-gl.ts b/modules/test-utils/src/utils/setup-gl.ts
index c47c2571294..71d6f5286d2 100644
--- a/modules/test-utils/src/utils/setup-gl.ts
+++ b/modules/test-utils/src/utils/setup-gl.ts
@@ -2,8 +2,6 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) vis.gl contributors
 
-import {CanvasContextProps} from '@luma.gl/core';
-import {WebGLDevice} from '@luma.gl/webgl';
 import {webglDevice, NullDevice} from '@luma.gl/test-utils';
 
 export const device = webglDevice || new NullDevice({});
diff --git a/test/modules/mapbox/mapbox-gl-mock/map.ts b/test/modules/mapbox/mapbox-gl-mock/map.ts
index b3d4c57e4ee..5a78646f1c1 100644
--- a/test/modules/mapbox/mapbox-gl-mock/map.ts
+++ b/test/modules/mapbox/mapbox-gl-mock/map.ts
@@ -83,17 +83,23 @@ export default class Map extends Evented {
     return this.projection;
   }
 
-  addControl(control) {
-    this._controls.push(control);
+  addControl(control, position?) {
+    this._controls.push({
+      control,
+      position: position || control.getDefaultPosition?.() || 'top-right'
+    });
     control.onAdd(this);
   }
   removeControl(control) {
-    const i = this._controls.indexOf(control);
+    const i = this._controls.findIndex(c => c.control === control);
     if (i >= 0) {
       this._controls.splice(i, 1);
       control.onRemove(this);
     }
   }
+  hasControl(control) {
+    return this._controls.some(c => c.control === control);
+  }
 
   loaded() {
     return this._loaded;
diff --git a/test/modules/mapbox/mapbox-overlay.spec.ts b/test/modules/mapbox/mapbox-overlay.spec.ts
index 05385a210f3..3a513736ee8 100644
--- a/test/modules/mapbox/mapbox-overlay.spec.ts
+++ b/test/modules/mapbox/mapbox-overlay.spec.ts
@@ -6,12 +6,39 @@ import test from 'tape-promise/tape';
 
 import {ScatterplotLayer} from '@deck.gl/layers';
 import {MapboxOverlay} from '@deck.gl/mapbox';
-import {_GlobeView as GlobeView, MapView} from '@deck.gl/core';
+import {_GlobeView as GlobeView, MapView, Widget} from '@deck.gl/core';
+import type {WidgetPlacement} from '@deck.gl/core';
+import {WebGLDevice} from '@luma.gl/webgl';
 
 import {objectEqual} from './mapbox-layer.spec';
 import MockMapboxMap from './mapbox-gl-mock/map';
 import {DEFAULT_PARAMETERS} from './fixtures';
 
+// Create an isolated device for overlaid mode tests to prevent GL context corruption
+const overlaidTestDevice = new WebGLDevice({createCanvasContext: {width: 1, height: 1}});
+
+// Simple test widget for testing MapboxOverlay widget support
+class TestWidget extends Widget<{placement?: WidgetPlacement; viewId?: string | null}> {
+  static defaultProps = {
+    ...Widget.defaultProps,
+    id: 'test-widget',
+    placement: 'top-left' as WidgetPlacement
+  };
+
+  placement: WidgetPlacement = 'top-left';
+  className = 'deck-test-widget';
+
+  constructor(props: {id?: string; placement?: WidgetPlacement; viewId?: string | null} = {}) {
+    super(props);
+    this.viewId = props.viewId ?? null;
+    this.placement = props.placement ?? 'top-left';
+  }
+
+  onRenderHTML(rootElement: HTMLElement): void {
+    rootElement.textContent = this.id;
+  }
+}
+
 function sleep(milliseconds: number): Promise<void> {
   return new Promise(resolve => {
     setTimeout(resolve, milliseconds);
@@ -35,6 +62,7 @@ test('MapboxOverlay#overlaid', t => {
     zoom: 14
   });
   const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
     layers: [new ScatterplotLayer()]
   });
 
@@ -97,7 +125,9 @@ test('MapboxOverlay#overlaidNoIntitalLayers', t => {
     center: {lng: -122.45, lat: 37.78},
     zoom: 14
   });
-  const overlay = new MapboxOverlay({});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice
+  });
 
   map.addControl(overlay);
 
@@ -476,3 +506,214 @@ test('MapboxOverlay#renderLayersInGroups - setProps', t => {
     t.end();
   });
 });
+
+// Widget support tests
+
+test('MapboxOverlay#widgets - regular widgets render in deck container', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget = new TestWidget({id: 'regular-widget', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget]
+  });
+
+  map.addControl(overlay);
+
+  t.ok(overlay._deck, 'Deck instance is created');
+  t.is(overlay._widgetControls.length, 0, 'No widget controls for regular widgets');
+  t.ok(overlay._deck.props.widgets.includes(widget), 'Widget is passed to Deck');
+
+  map.removeControl(overlay);
+  t.notOk(overlay._deck, 'Deck instance is finalized');
+  t.end();
+});
+
+test('MapboxOverlay#widgets - viewId:mapbox widgets wrapped as IControl', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget = new TestWidget({id: 'mapbox-widget', viewId: 'mapbox', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget]
+  });
+
+  map.addControl(overlay);
+
+  t.ok(overlay._deck, 'Deck instance is created');
+  t.is(overlay._widgetControls.length, 1, 'Widget control is created');
+  t.ok(map.hasControl(overlay._widgetControls[0]), 'Widget control is added to map');
+  t.ok(widget.props._container, 'Widget _container is set');
+  t.ok(overlay._deck.props.widgets.includes(widget), 'Widget is still passed to Deck for events');
+
+  map.removeControl(overlay);
+  t.is(overlay._widgetControls.length, 0, 'Widget controls are cleaned up');
+  t.notOk(overlay._deck, 'Deck instance is finalized');
+  t.end();
+});
+
+test('MapboxOverlay#widgets - mixed widgets', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const regularWidget = new TestWidget({id: 'regular', placement: 'top-left'});
+  const mapboxWidget1 = new TestWidget({id: 'mapbox1', viewId: 'mapbox', placement: 'top-right'});
+  const mapboxWidget2 = new TestWidget({
+    id: 'mapbox2',
+    viewId: 'mapbox',
+    placement: 'bottom-right'
+  });
+
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [regularWidget, mapboxWidget1, mapboxWidget2]
+  });
+
+  map.addControl(overlay);
+
+  t.ok(overlay._deck, 'Deck instance is created');
+  t.is(overlay._widgetControls.length, 2, 'Two widget controls for mapbox widgets');
+  t.notOk(regularWidget.props._container, 'Regular widget _container is not set');
+  t.ok(mapboxWidget1.props._container, 'Mapbox widget1 _container is set');
+  t.ok(mapboxWidget2.props._container, 'Mapbox widget2 _container is set');
+
+  // All widgets passed to Deck
+  t.is(overlay._deck.props.widgets.length, 3, 'All widgets passed to Deck');
+
+  map.removeControl(overlay);
+  t.end();
+});
+
+test('MapboxOverlay#widgets - setProps updates widget controls', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget1 = new TestWidget({id: 'widget1', viewId: 'mapbox', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget1]
+  });
+
+  map.addControl(overlay);
+  t.is(overlay._widgetControls.length, 1, 'Initial widget control created');
+
+  const widget2 = new TestWidget({id: 'widget2', viewId: 'mapbox', placement: 'bottom-left'});
+  overlay.setProps({
+    widgets: [widget2]
+  });
+
+  t.is(overlay._widgetControls.length, 1, 'Widget control count updated');
+  t.ok(widget2.props._container, 'New widget _container is set');
+
+  // Clear all widgets
+  overlay.setProps({
+    widgets: []
+  });
+  t.is(overlay._widgetControls.length, 0, 'Widget controls cleared');
+
+  map.removeControl(overlay);
+  t.end();
+});
+
+test('MapboxOverlay#widgets - setProps preserves container for same widget instance', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget = new TestWidget({id: 'widget1', viewId: 'mapbox', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget]
+  });
+
+  map.addControl(overlay);
+  t.is(overlay._widgetControls.length, 1, 'Widget control created');
+  const originalContainer = widget.props._container;
+  t.ok(originalContainer, 'Widget _container is set');
+  const originalControl = overlay._widgetControls[0];
+
+  // Call setProps with the same widget instance
+  overlay.setProps({
+    widgets: [widget]
+  });
+
+  t.is(overlay._widgetControls.length, 1, 'Still one widget control');
+  t.is(overlay._widgetControls[0], originalControl, 'Same control instance preserved');
+  t.is(widget.props._container, originalContainer, 'Container preserved - not recreated');
+
+  map.removeControl(overlay);
+  t.end();
+});
+
+test('MapboxOverlay#widgets - setProps preserves container for new widget instance with same id', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget1 = new TestWidget({id: 'my-widget', viewId: 'mapbox', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    device: overlaidTestDevice,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget1]
+  });
+
+  map.addControl(overlay);
+  t.is(overlay._widgetControls.length, 1, 'Widget control created');
+  const originalContainer = widget1.props._container;
+  t.ok(originalContainer, 'Widget _container is set');
+  const originalControl = overlay._widgetControls[0];
+
+  // Call setProps with a NEW widget instance but same id and placement (React pattern)
+  const widget2 = new TestWidget({id: 'my-widget', viewId: 'mapbox', placement: 'top-right'});
+  overlay.setProps({
+    widgets: [widget2]
+  });
+
+  t.is(overlay._widgetControls.length, 1, 'Still one widget control');
+  t.is(overlay._widgetControls[0], originalControl, 'Same control instance preserved');
+  t.is(widget2.props._container, originalContainer, 'New widget gets existing container');
+
+  map.removeControl(overlay);
+  t.end();
+});
+
+test('MapboxOverlay#widgets - interleaved mode', t => {
+  const map = new MockMapboxMap({
+    center: {lng: -122.45, lat: 37.78},
+    zoom: 14
+  });
+
+  const widget = new TestWidget({id: 'mapbox-widget', viewId: 'mapbox', placement: 'top-right'});
+  const overlay = new MapboxOverlay({
+    interleaved: true,
+    layers: [new ScatterplotLayer()],
+    widgets: [widget]
+  });
+
+  map.addControl(overlay);
+
+  t.ok(overlay._deck, 'Deck instance is created');
+  t.is(overlay._widgetControls.length, 1, 'Widget control is created in interleaved mode');
+  t.ok(widget.props._container, 'Widget _container is set');
+
+  map.removeControl(overlay);
+  t.is(overlay._widgetControls.length, 0, 'Widget controls are cleaned up');
+  t.end();
+});