diff --git a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
index 90ff62eaea..5520887575 100644
--- a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
+++ b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
@@ -8,6 +8,7 @@
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\link\LinkItemInterface;
 use Drupal\menu_link_content\MenuLinkContentInterface;
+use Drupal\system\MenuInterface;
 
 /**
  * Defines the menu link content entity class.
@@ -80,6 +81,14 @@ public function setInsidePlugin() {
     $this->insidePlugin = TRUE;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function setMenu(MenuInterface $menu) {
+    $this->set('menu', $menu->id());
+    return $this;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -101,6 +110,13 @@ public function getMenuName() {
     return $this->get('menu_name')->value;
   }
 
+/**
+   * {@inheritdoc}
+   */
+  public function getMenu() {
+    return $this->get('menu')->entity;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -323,6 +339,10 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDefaultValue('tools')
       ->setSetting('is_ascii', TRUE);
 
+    $fields['menu'] = BaseFieldDefinition::create('entity_reference')
+      ->setLabel(t('Menu'))
+      ->setDescription(t('The menu this link is part of.'));
+
     $fields['link'] = BaseFieldDefinition::create('link')
       ->setLabel(t('Link'))
       ->setDescription(t('The location this menu link points to.'))
diff --git a/core/modules/menu_link_content/src/MenuLinkContentInterface.php b/core/modules/menu_link_content/src/MenuLinkContentInterface.php
index 583d162097..2aca9a5cca 100644
--- a/core/modules/menu_link_content/src/MenuLinkContentInterface.php
+++ b/core/modules/menu_link_content/src/MenuLinkContentInterface.php
@@ -5,6 +5,7 @@
 use Drupal\Core\Entity\EntityChangedInterface;
 use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\EntityPublishedInterface;
+use Drupal\system\MenuInterface;
 use Drupal\Core\Entity\RevisionLogInterface;
 
 /**
@@ -17,6 +18,16 @@ interface MenuLinkContentInterface extends ContentEntityInterface, EntityChanged
    */
   public function setInsidePlugin();
 
+/**
+   * Sets the menu entity of the custom menu link.
+   *
+   * @param \Drupal\system\MenuInterface $menu
+   *   The menu entity.
+   *
+   * @return $this
+   */
+  public function setMenu(MenuInterface $menu);
+
   /**
    * Gets the title of the menu link.
    *
@@ -41,6 +52,14 @@ public function getUrlObject();
    */
   public function getMenuName();
 
+/**
+   * Gets the menu entity of the custom menu link.
+   *
+   * @return \Drupal\system\MenuInterface
+   *   The menu entity.
+   */
+  public function getMenu();
+
   /**
    * Gets the description of the menu link for the UI.
    *