diff --git a/core/lib/Drupal/Core/Entity/ViewMode/EntityViewMode.php b/core/lib/Drupal/Core/Entity/ViewMode/EntityViewMode.php
index 47f2078..d8f6bc9 100644
--- a/core/lib/Drupal/Core/Entity/ViewMode/EntityViewMode.php
+++ b/core/lib/Drupal/Core/Entity/ViewMode/EntityViewMode.php
@@ -45,17 +45,40 @@ class EntityViewMode extends ConfigEntityBase {
    */
   public $bundles = array();
 
+  /**
+   * The entity type this view mode is used for.
+   *
+   * @var string
+   */
   public $type;
 
+  /**
+   * Whether or not this view mode has custom settings in the Field UI.
+   *
+   * @var bool
+   */
   public $custom = FALSE;
 
   /**
+   * Whether or not this view mode can be removed.
+   *
+   * @var bool
+   */
+  public $locked = FALSE;
+
+  /**
    * Overrides Drupal\Core\Core\Entity\Entity::id().
    */
   public function id() {
     return $this->name;
   }
 
+  /**
+   * Returns the raw view mode name, exluding the entity type.
+   *
+   * @return string
+   *   The raw view mode name.
+   */
   public function name() {
     $name = strtok($this->name, '.');
     return strtok('.');
diff --git a/core/modules/comment/config/view_mode.comment.full.yml b/core/modules/comment/config/view_mode.comment.full.yml
index 23a7a33..ae04d51 100644
--- a/core/modules/comment/config/view_mode.comment.full.yml
+++ b/core/modules/comment/config/view_mode.comment.full.yml
@@ -2,3 +2,4 @@ name: comment.full
 label: Full comment
 custom: '0'
 type: comment
+locked: '1'
diff --git a/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeFormController.php b/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeFormController.php
index 646057c..3f9fefc 100644
--- a/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeFormController.php
+++ b/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeFormController.php
@@ -77,6 +77,16 @@ function ($option) use ($view_mode) {
   }
 
   /**
+   * Overrides Drupal\Core\Entity\EntityFormController::actions().
+   */
+  protected function actions(array $form, array &$form_state) {
+    $view_mode = $this->getEntity($form_state);
+    $actions = parent::actions($form, $form_state);
+    $actions['delete']['#access'] = !$view_mode->locked;
+    return $actions;
+  }
+
+  /**
    * Overrides Drupal\Core\Entity\EntityFormController::validate().
    */
   public function validate(array $form, array &$form_state) {
diff --git a/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeListController.php b/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeListController.php
index d4cfab7..ebbf75a 100644
--- a/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeListController.php
+++ b/core/modules/entity_ui/lib/Drupal/entity_ui/ViewModeListController.php
@@ -56,6 +56,17 @@ public function buildRow(EntityInterface $view_mode) {
   }
 
   /**
+   * Overrides Drupal\Core\Entity\EntityListController::getOperations();
+   */
+  public function getOperations(EntityInterface $view_mode) {
+    $operations = parent::getOperations($view_mode);
+    if ($view_mode->locked) {
+      unset($operations['delete']);
+    }
+    return $operations;
+  }
+
+  /**
    * Overrides Drupal\Core\Entity\EntityListController::buildRow();
    */
   public function render() {
diff --git a/core/modules/file/config/view_mode.file.full.yml b/core/modules/file/config/view_mode.file.full.yml
index c8065a1..44bea6c 100644
--- a/core/modules/file/config/view_mode.file.full.yml
+++ b/core/modules/file/config/view_mode.file.full.yml
@@ -2,3 +2,4 @@ name: file.full
 label: File default
 custom: '0'
 type: file
+locked: '1'
diff --git a/core/modules/node/config/view_mode.node.full.yml b/core/modules/node/config/view_mode.node.full.yml
index 1614340..ecd11ea 100644
--- a/core/modules/node/config/view_mode.node.full.yml
+++ b/core/modules/node/config/view_mode.node.full.yml
@@ -2,3 +2,4 @@ name: node.full
 label: Full content
 custom: '0'
 type: node
+locked: '1'
diff --git a/core/modules/node/config/view_mode.node.rss.yml b/core/modules/node/config/view_mode.node.rss.yml
index 96213fe..aec7364 100644
--- a/core/modules/node/config/view_mode.node.rss.yml
+++ b/core/modules/node/config/view_mode.node.rss.yml
@@ -2,3 +2,4 @@ name: node.rss
 label: RSS
 custom: '0'
 type: node
+locked: '1'
diff --git a/core/modules/node/config/view_mode.node.teaser.yml b/core/modules/node/config/view_mode.node.teaser.yml
index d5dd1f4..005d8e0 100644
--- a/core/modules/node/config/view_mode.node.teaser.yml
+++ b/core/modules/node/config/view_mode.node.teaser.yml
@@ -2,3 +2,4 @@ name: node.teaser
 label: Teaser
 custom: '1'
 type: node
+locked: '1'
diff --git a/core/modules/search/config/view_mode.node.search_index.yml b/core/modules/search/config/view_mode.node.search_index.yml
index a8155bc..9d9441e 100644
--- a/core/modules/search/config/view_mode.node.search_index.yml
+++ b/core/modules/search/config/view_mode.node.search_index.yml
@@ -2,3 +2,4 @@ name: node.search_index
 label: Search index
 custom: '0'
 type: node
+locked: '1'
diff --git a/core/modules/search/config/view_mode.node.search_result.yml b/core/modules/search/config/view_mode.node.search_result.yml
index 9e8b02f..5539901 100644
--- a/core/modules/search/config/view_mode.node.search_result.yml
+++ b/core/modules/search/config/view_mode.node.search_result.yml
@@ -2,3 +2,4 @@ name: node.search_result
 label: Search result
 custom: '0'
 type: node
+locked: '1'
diff --git a/core/modules/taxonomy/config/view_mode.taxonomy_term.full.yml b/core/modules/taxonomy/config/view_mode.taxonomy_term.full.yml
index 03ccf14..4e9e70b 100644
--- a/core/modules/taxonomy/config/view_mode.taxonomy_term.full.yml
+++ b/core/modules/taxonomy/config/view_mode.taxonomy_term.full.yml
@@ -2,3 +2,4 @@ name: taxonomy_term.full
 label: Taxonomy term page
 custom: '0'
 type: taxonomy_term
+locked: '1'
diff --git a/core/modules/taxonomy/config/view_mode.taxonomy_vocabulary.full.yml b/core/modules/taxonomy/config/view_mode.taxonomy_vocabulary.full.yml
index 0b32697..2545a2c 100644
--- a/core/modules/taxonomy/config/view_mode.taxonomy_vocabulary.full.yml
+++ b/core/modules/taxonomy/config/view_mode.taxonomy_vocabulary.full.yml
@@ -2,3 +2,4 @@ name: taxonomy_vocabulary.full
 label: Taxonomy vocabulary default
 custom: '0'
 type: taxonomy_vocabulary
+locked: '1'
diff --git a/core/modules/user/config/view_mode.user.full.yml b/core/modules/user/config/view_mode.user.full.yml
index a1fd93f..0c05b19 100644
--- a/core/modules/user/config/view_mode.user.full.yml
+++ b/core/modules/user/config/view_mode.user.full.yml
@@ -2,3 +2,4 @@ name: user.full
 label: User account
 custom: '0'
 type: user
+locked: '1'