diff --git a/src/vs/workbench/browser/parts/notifications/notificationsCommands.ts b/src/vs/workbench/browser/parts/notifications/notificationsCommands.ts
index 4c01c42d61bd1..9213b1aa4b163 100644
--- a/src/vs/workbench/browser/parts/notifications/notificationsCommands.ts
+++ b/src/vs/workbench/browser/parts/notifications/notificationsCommands.ts
@@ -16,10 +16,11 @@ import { NotificationFocusedContext, NotificationsCenterVisibleContext, Notifica
 import { INotificationService, INotificationSourceFilter, NotificationsFilter } from '../../../../platform/notification/common/notification.js';
 import { IInstantiationService, ServicesAccessor } from '../../../../platform/instantiation/common/instantiation.js';
 import { ActionRunner, IAction, WorkbenchActionExecutedEvent, WorkbenchActionExecutedClassification } from '../../../../base/common/actions.js';
-import { IQuickInputService, IQuickPickItem } from '../../../../platform/quickinput/common/quickInput.js';
+import { IQuickInputButton, IQuickInputService, IQuickPickItem } from '../../../../platform/quickinput/common/quickInput.js';
 import { DisposableStore } from '../../../../base/common/lifecycle.js';
 import { AccessibilitySignal, IAccessibilitySignalService } from '../../../../platform/accessibilitySignal/browser/accessibilitySignalService.js';
 import { Codicon } from '../../../../base/common/codicons.js';
+import { ThemeIcon } from '../../../../base/common/themables.js';
 import { IConfigurationService } from '../../../../platform/configuration/common/configuration.js';
 
 // Center
@@ -285,6 +286,12 @@ export function registerNotificationCommands(center: INotificationsCenterControl
 
 		const sortedFilters = notificationService.getFilters().sort((a, b) => a.label.localeCompare(b.label));
 
+		const removeSourceButton: IQuickInputButton = {
+			iconClass: ThemeIcon.asClassName(Codicon.removeClose),
+			tooltip: localize('removeSource', "Remove Source"),
+			alwaysVisible: true
+		};
+
 		const disposables = new DisposableStore();
 		const picker = disposables.add(quickInputService.createQuickPick<IQuickPickItem & INotificationSourceFilter>());
 
@@ -292,7 +299,8 @@ export function registerNotificationCommands(center: INotificationsCenterControl
 			id: source.id,
 			label: source.label,
 			tooltip: `${source.label} (${source.id})`,
-			filter: source.filter
+			filter: source.filter,
+			buttons: [removeSourceButton]
 		}));
 
 		picker.canSelectMany = true;
@@ -301,6 +309,21 @@ export function registerNotificationCommands(center: INotificationsCenterControl
 
 		picker.show();
 
+		disposables.add(picker.onDidTriggerItemButton(event => {
+			if (event.button !== removeSourceButton || !event.item.id) {
+				return;
+			}
+
+			notificationService.removeFilter(event.item.id);
+
+			// Rebuild items so the removed entry disappears immediately
+			// while preserving the user's current selection for the rest.
+			const previousSelectedIds = new Set(picker.selectedItems.map(item => item.id));
+			const remaining = picker.items.filter(item => item.id !== event.item.id);
+			picker.items = remaining;
+			picker.selectedItems = remaining.filter(item => previousSelectedIds.has(item.id));
+		}));
+
 		disposables.add(picker.onDidAccept(async () => {
 			for (const item of picker.items) {
 				notificationService.setFilter({
diff --git a/src/vs/workbench/services/notification/test/common/notificationService.test.ts b/src/vs/workbench/services/notification/test/common/notificationService.test.ts
new file mode 100644
index 0000000000000..4cb6333464f42
--- /dev/null
+++ b/src/vs/workbench/services/notification/test/common/notificationService.test.ts
@@ -0,0 +1,90 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import assert from 'assert';
+import { ensureNoDisposablesAreLeakedInTestSuite } from '../../../../../base/test/common/utils.js';
+import { NotificationsFilter } from '../../../../../platform/notification/common/notification.js';
+import { TestStorageService } from '../../../../test/common/workbenchTestServices.js';
+import { NotificationService } from '../../common/notificationService.js';
+
+suite('NotificationService - filters', () => {
+
+	const disposables = ensureNoDisposablesAreLeakedInTestSuite();
+
+	function createService(): NotificationService {
+		const storageService = disposables.add(new TestStorageService());
+		return disposables.add(new NotificationService(storageService));
+	}
+
+	test('getFilters returns sources registered via setFilter', () => {
+		const service = createService();
+
+		service.setFilter({ id: 'ext.a', label: 'Extension A', filter: NotificationsFilter.OFF });
+		service.setFilter({ id: 'ext.b', label: 'Extension B', filter: NotificationsFilter.ERROR });
+
+		const filters = service.getFilters().sort((a, b) => a.id.localeCompare(b.id));
+		assert.strictEqual(filters.length, 2);
+		assert.strictEqual(filters[0].id, 'ext.a');
+		assert.strictEqual(filters[0].filter, NotificationsFilter.OFF);
+		assert.strictEqual(filters[1].id, 'ext.b');
+		assert.strictEqual(filters[1].filter, NotificationsFilter.ERROR);
+	});
+
+	test('removeFilter drops a previously tracked source', () => {
+		const service = createService();
+
+		service.setFilter({ id: 'ext.a', label: 'Extension A', filter: NotificationsFilter.OFF });
+		service.setFilter({ id: 'ext.b', label: 'Extension B', filter: NotificationsFilter.ERROR });
+		assert.strictEqual(service.getFilters().length, 2);
+
+		service.removeFilter('ext.a');
+
+		const filters = service.getFilters();
+		assert.strictEqual(filters.length, 1);
+		assert.strictEqual(filters[0].id, 'ext.b');
+
+		// After removal, the per-source filter falls back to the default (OFF).
+		assert.strictEqual(service.getFilter({ id: 'ext.a', label: 'Extension A' }), NotificationsFilter.OFF);
+	});
+
+	test('removeFilter is a no-op for unknown source ids', () => {
+		const service = createService();
+
+		service.setFilter({ id: 'ext.a', label: 'Extension A', filter: NotificationsFilter.ERROR });
+
+		service.removeFilter('ext.unknown');
+
+		const filters = service.getFilters();
+		assert.strictEqual(filters.length, 1);
+		assert.strictEqual(filters[0].id, 'ext.a');
+		assert.strictEqual(filters[0].filter, NotificationsFilter.ERROR);
+	});
+
+	test('removeFilter persists across service instances using the same storage', () => {
+		const storageService = disposables.add(new TestStorageService());
+
+		const first = disposables.add(new NotificationService(storageService));
+		first.setFilter({ id: 'ext.a', label: 'Extension A', filter: NotificationsFilter.ERROR });
+		first.setFilter({ id: 'ext.b', label: 'Extension B', filter: NotificationsFilter.OFF });
+		first.removeFilter('ext.a');
+
+		// A fresh service backed by the same storage should not see the removed source.
+		const second = disposables.add(new NotificationService(storageService));
+		const filters = second.getFilters();
+		assert.strictEqual(filters.length, 1);
+		assert.strictEqual(filters[0].id, 'ext.b');
+	});
+
+	test('removing the last filter leaves the picker source list empty', () => {
+		const service = createService();
+
+		service.setFilter({ id: 'ext.only', label: 'Only Extension', filter: NotificationsFilter.OFF });
+		assert.strictEqual(service.getFilters().length, 1);
+
+		service.removeFilter('ext.only');
+
+		assert.strictEqual(service.getFilters().length, 0);
+	});
+});