diff --git a/core/lib/Drupal/Core/Render/Element/RenderElement.php b/core/lib/Drupal/Core/Render/Element/RenderElement.php
index 9c5167b80..5b826e8d5 100644
--- a/core/lib/Drupal/Core/Render/Element/RenderElement.php
+++ b/core/lib/Drupal/Core/Render/Element/RenderElement.php
@@ -140,7 +140,9 @@ public static function setAttributes(&$element, $class = []) {
       $element['#attributes']['class'][] = 'required';
       $element['#attributes']['required'] = 'required';
       // Fieldset elements are not allowed to have aria-required attribute.
-      if ($element['#type'] !== 'fieldset') {
+      // Checkbox elements are not allowed to have aria-required attribute.
+      // See https://www.w3.org/TR/wai-aria-1.2/#checkbox.
+      if ($element['#type'] !== 'fieldset' && $element['#type'] !== 'checkbox') {
         $element['#attributes']['aria-required'] = 'true';
       }
     }
diff --git a/core/modules/system/tests/src/Functional/Form/CheckboxTest.php b/core/modules/system/tests/src/Functional/Form/CheckboxTest.php
index c28112383..7b5a06372 100644
--- a/core/modules/system/tests/src/Functional/Form/CheckboxTest.php
+++ b/core/modules/system/tests/src/Functional/Form/CheckboxTest.php
@@ -102,6 +102,10 @@ public function testFormCheckbox() {
       $name = (string) $checkbox->getAttribute('name');
       $this->assertSame($checked, $name == 'checkbox_off[0]' || $name == 'checkbox_zero_default[0]' || $name == 'checkbox_string_zero_default[0]', new FormattableMarkup('Checkbox %name correctly checked', ['%name' => $name]));
     }
+
+    // Ensure that checkbox has no aria required attribute.
+    $this->drupalGet('/form-test/checkbox');
+    $this->assertEmpty($this->assertSession()->elementExists('css', 'input[type=checkbox][required]')->getAttribute('aria-required'));
   }
 
 }