diff --git a/core/lib/Drupal/Core/Ajax/AnnounceCommand.php b/core/lib/Drupal/Core/Ajax/AnnounceCommand.php
new file mode 100644
index 0000000000..3c612f77e9
--- /dev/null
+++ b/core/lib/Drupal/Core/Ajax/AnnounceCommand.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Drupal\Core\Ajax;
+
+use Drupal\Core\Asset\AttachedAssets;
+
+/**
+ * AJAX command for a javascript Drupal.announce() call.
+ *
+ * @ingroup ajax
+ */
+class AnnounceCommand implements CommandInterface, CommandWithAttachedAssetsInterface {
+
+
+  /**
+   * The text to be announced.
+   *
+   * @var string
+   */
+  protected $text;
+
+  /**
+   * Constructs an AnnounceCommand object.
+   *
+   * @param string $text
+   *   The text to be announced.
+   */
+  public function __construct($text) {
+    $this->text = $text;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function render() {
+    return [
+      'command' => 'announce',
+      'text' => $this->text,
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAttachedAssets() {
+    $assets = new AttachedAssets();
+    $assets->setLibraries(['core/drupal.announce']);
+    return $assets;
+  }
+
+}
diff --git a/core/misc/ajax.es6.js b/core/misc/ajax.es6.js
index 440e5906dc..684902917d 100644
--- a/core/misc/ajax.es6.js
+++ b/core/misc/ajax.es6.js
@@ -1335,6 +1335,22 @@
       window.alert(response.text, response.title);
     },
 
+    /**
+     * Command to provide triggers audio UAs to read the supplied text.
+     *
+     * @param {Drupal.Ajax} [ajax]
+     *   {@link Drupal.Ajax} object created by {@link Drupal.ajax}.
+     * @param {object} response
+     *   The JSON response from the Ajax request.
+     * @param {string} response.text
+     *   The text that will be read.
+     * @param {number} [status]
+     *   The XMLHttpRequest status.
+     */
+    announce(ajax, response, status) {
+      Drupal.announce(response.text);
+    },
+
     /**
      * Command to set the window.location, redirecting the browser.
      *
diff --git a/core/misc/ajax.js b/core/misc/ajax.js
index 73b4dcca69..84ed72a15a 100644
--- a/core/misc/ajax.js
+++ b/core/misc/ajax.js
@@ -576,6 +576,9 @@ function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr
     alert: function alert(ajax, response, status) {
       window.alert(response.text, response.title);
     },
+    announce: function announce(ajax, response, status) {
+      Drupal.announce(response.text);
+    },
     redirect: function redirect(ajax, response, status) {
       window.location = response.url;
     },
diff --git a/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.module b/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.module
index a93372d06d..92300fe0c4 100644
--- a/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.module
+++ b/core/modules/system/tests/modules/ajax_forms_test/ajax_forms_test.module
@@ -9,6 +9,7 @@
 use Drupal\Core\Ajax\AfterCommand;
 use Drupal\Core\Ajax\AjaxResponse;
 use Drupal\Core\Ajax\AlertCommand;
+use Drupal\Core\Ajax\AnnounceCommand;
 use Drupal\Core\Ajax\AppendCommand;
 use Drupal\Core\Ajax\BeforeCommand;
 use Drupal\Core\Ajax\ChangedCommand;
@@ -43,6 +44,16 @@ function ajax_forms_test_advanced_commands_alert_callback($form, FormStateInterf
   return $response;
 }
 
+
+/**
+ * Ajax form callback: Selects 'announce'.
+ */
+function ajax_forms_test_advanced_commands_announce_callback($form, FormStateInterface $form_state) {
+  $response = new AjaxResponse();
+  $response->addCommand(new AnnounceCommand('This is my announcement.'));
+  return $response;
+}
+
 /**
  * Ajax form callback: Selects 'append'.
  */
diff --git a/core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestCommandsForm.php b/core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestCommandsForm.php
index 924a9fda61..c79e29adfe 100644
--- a/core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestCommandsForm.php
+++ b/core/modules/system/tests/modules/ajax_forms_test/src/Form/AjaxFormsTestCommandsForm.php
@@ -44,6 +44,15 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       ],
     ];
 
+    // Shows the 'alert' command.
+    $form['announce_command_example'] = [
+      '#value' => $this->t("AJAX 'Announce': Click to announce"),
+      '#type' => 'submit',
+      '#ajax' => [
+        'callback' => 'ajax_forms_test_advanced_commands_announce_callback',
+      ],
+    ];
+
     // Shows the 'append' command.
     $form['append_command_example'] = [
       '#value' => $this->t("AJAX 'Append': Click to append something"),
diff --git a/core/tests/Drupal/FunctionalJavascriptTests/Ajax/CommandsTest.php b/core/tests/Drupal/FunctionalJavascriptTests/Ajax/CommandsTest.php
index 0db5e5f74e..eb2ea429dd 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/Ajax/CommandsTest.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/Ajax/CommandsTest.php
@@ -46,6 +46,11 @@ public function testAjaxCommands() {
     $page->pressButton("AJAX 'Alert': Click to alert");
     $this->assertWaitPageContains('<div class="alert-command">Alert</div>');
 
+    $this->drupalGet($form_path);
+    $page->pressButton("AJAX 'Announce': Click to announce");
+
+    $this->assertWaitPageContains('<div id="drupal-live-announce" class="visually-hidden" aria-live="polite" aria-busy="false">This is my announcement.</div>');
+
     // Tests the 'append' command.
     $page->pressButton("AJAX 'Append': Click to append something");
     $this->assertWaitPageContains('<div id="append_div">Append inside this divAppended text</div>');
diff --git a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
index 1dd66b8328..b528659cde 100644
--- a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
+++ b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
@@ -2,6 +2,8 @@
 
 namespace Drupal\Tests\Core\Ajax;
 
+use Drupal\Core\Ajax\AnnounceCommand;
+use Drupal\Core\Asset\AttachedAssets;
 use Drupal\Tests\UnitTestCase;
 use Drupal\Core\Ajax\AddCssCommand;
 use Drupal\Core\Ajax\AfterCommand;
@@ -78,6 +80,23 @@ public function testAlertCommand() {
     $this->assertEquals($expected, $command->render());
   }
 
+  /**
+   * @covers \Drupal\Core\Ajax\AnnounceCommand
+   */
+  public function testAnnounceCommand() {
+    $command = new AnnounceCommand('Things are going to change!');
+    $expected_assets = new AttachedAssets();
+    $expected_assets->setLibraries(['core/drupal.announce']);
+    $this->assertEquals($expected_assets, $command->getAttachedAssets());
+
+    $expected = [
+      'command' => 'announce',
+      'text' => 'Things are going to change!',
+    ];
+
+    $this->assertSame($expected, $command->render());
+  }
+
   /**
    * @covers \Drupal\Core\Ajax\AppendCommand
    */