diff --git a/core/modules/block/block.module b/core/modules/block/block.module
index f54f9587c8e..c217c9ff89f 100644
--- a/core/modules/block/block.module
+++ b/core/modules/block/block.module
@@ -7,6 +7,7 @@
 
 use Drupal\block\BlockInterface;
 use Drupal\Component\Plugin\Exception\PluginException;
+use Drupal\language\Entity\Language;
 use Symfony\Cmf\Component\Routing\RouteObjectInterface;
 
 /**
@@ -444,16 +445,16 @@ function block_menu_delete($menu) {
 }
 
 /**
- * Implements hook_language_delete().
+ * Implements hook_ENTITY_TYPE_delete() for 'language_entity'.
  *
  * Delete the potential block visibility settings of the deleted language.
  */
-function block_language_delete($language) {
+function block_language_entity_delete(Language $language) {
   // Remove the block visibility settings for the deleted language.
   foreach (entity_load_multiple('block') as $block) {
     $visibility = $block->get('visibility');
-    if (isset($visibility['language']['langcodes'][$language->id])) {
-      unset($visibility['language']['langcodes'][$language->id]);
+    if (isset($visibility['language']['langcodes'][$language->id()])) {
+      unset($visibility['language']['langcodes'][$language->id()]);
       $block->set('visibility', $visibility);
       $block->save();
     }
diff --git a/core/modules/language/language.api.php b/core/modules/language/language.api.php
index 415faac38fa..b074113df1c 100644
--- a/core/modules/language/language.api.php
+++ b/core/modules/language/language.api.php
@@ -77,53 +77,6 @@ function hook_language_negotiation_info_alter(array &$negotiation_info) {
   }
 }
 
-/**
- * React to a language about to be added or updated in the system.
- *
- * @param $language
- *   A language object.
- */
-function hook_language_presave($language) {
-  if ($language->default) {
-    // React to a new default language.
-    example_new_default_language($language);
-  }
-}
-
-/**
- * React to a language that was just added to the system.
- *
- * @param $language
- *   A language object.
- */
-function hook_language_insert($language) {
-  example_refresh_permissions();
-}
-
-/**
- * React to a language that was just updated in the system.
- *
- * @param $language
- *   A language object.
- */
-function hook_language_update($language) {
-  example_refresh_permissions();
-}
-
-/**
- * Allow modules to react before the deletion of a language.
- *
- * @param $language
- *   The language object of the language that is about to be deleted.
- */
-function hook_language_delete($language) {
-  // On nodes with this language, unset the language
-  db_update('node')
-    ->fields(array('language' => ''))
-    ->condition('language', $language->id)
-    ->execute();
-}
-
 /**
  * Allow modules to alter the language fallback candidates.
  *
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index c6168370374..4d825089a45 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -9,6 +9,7 @@ use Drupal\Component\PhpStorage\PhpStorageFactory;
 use Drupal\Core\Language\Language;
 use Drupal\language\ConfigurableLanguageManager;
 use Drupal\language\ConfigurableLanguageManagerInterface;
+use Drupal\language\Entity\Language as LanguageEntity;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUI;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
 use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrlFallback;
@@ -448,9 +449,6 @@ function language_save($language) {
   }
   $language->is_new = $language_entity->isNew();
 
-  // Let other modules modify $language before saved.
-  \Drupal::moduleHandler()->invokeAll('language_presave', array($language));
-
   // Assign language properties to language entity.
   $language_entity->label = isset($language->name) ? $language->name : '';
   $language_entity->direction = isset($language->direction) ? $language->direction : '0';
@@ -462,11 +460,9 @@ function language_save($language) {
   $language_entity->save();
   $t_args = array('%language' => $language->name, '%langcode' => $language->id);
   if ($language->is_new) {
-    \Drupal::moduleHandler()->invokeAll('language_insert', array($language));
     watchdog('language', 'The %language (%langcode) language has been created.', $t_args);
   }
   else {
-    \Drupal::moduleHandler()->invokeAll('language_update', array($language));
     watchdog('language', 'The %language (%langcode) language has been updated.', $t_args);
   }
 
@@ -510,8 +506,6 @@ function language_delete($langcode) {
   if (isset($languages[$langcode]) && !$languages[$langcode]->locked) {
     $language = $languages[$langcode];
 
-    \Drupal::moduleHandler()->invokeAll('language_delete', array($language));
-
     // Remove the language.
     entity_delete_multiple('language_entity', array($language->id));
 
@@ -637,31 +631,31 @@ function language_modules_uninstalled($modules) {
 }
 
 /**
- * Implements hook_language_insert().
+ * Implements hook_ENTITY_TYPE_insert() for 'language_entity'.
  */
-function language_language_insert($language) {
+function language_language_entity_insert(LanguageEntity $language) {
   if (!empty($language->locked)) {
     return;
   }
 
   // Add language to the list of language domains.
   $domains = language_negotiation_url_domains();
-  $domains[$language->id] = '';
+  $domains[$language->id()] = '';
   language_negotiation_url_domains_save($domains);
 }
 
 /**
- * Implements hook_language_delete().
+ * Implements hook_ENTITY_TYPE_delete() for 'language_entity'.
  */
-function language_language_delete($language) {
+function language_language_entity_delete(LanguageEntity $language) {
   // Remove language from language prefix list.
   $prefixes = language_negotiation_url_prefixes();
-  unset($prefixes[$language->id]);
+  unset($prefixes[$language->id()]);
   language_negotiation_url_prefixes_save($prefixes);
 
   // Remove language from language domain list.
   $domains = language_negotiation_url_domains();
-  unset($domains[$language->id]);
+  unset($domains[$language->id()]);
   language_negotiation_url_domains_save($domains);
 }
 
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 68a4d1d6419..51de85f0f8f 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -13,6 +13,7 @@
 use Drupal\Component\Utility\Json;
 use Drupal\Core\Cache\Cache;
 use Drupal\Core\Language\Language;
+use Drupal\language\Entity\Language as LanguageEntity;
 use Drupal\Component\Utility\Crypt;
 
 /**
@@ -240,48 +241,48 @@ function locale_stream_wrappers() {
 }
 
 /**
- * Implements hook_language_insert().
+ * Implements hook_ENTITY_TYPE_insert() for 'language_entity'.
  */
-function locale_language_insert($language) {
+function locale_language_entity_insert(LanguageEntity $language) {
   // @todo move these two cache clears out. See http://drupal.org/node/1293252
   // Changing the language settings impacts the interface.
   \Drupal::cache('page')->deleteAll();
   // Force JavaScript translation file re-creation for the new language.
-  _locale_invalidate_js($language->id);
+  _locale_invalidate_js($language->id());
 }
 
 /**
- * Implements hook_language_update().
+ * Implements hook_ENTITY_TYPE_update() for 'language_entity'.
  */
-function locale_language_update($language) {
+function locale_language_entity_update(LanguageEntity $language) {
   // @todo move these two cache clears out. See http://drupal.org/node/1293252
   // Changing the language settings impacts the interface.
   \Drupal::cache('page')->deleteAll();
   // Force JavaScript translation file re-creation for the modified language.
-  _locale_invalidate_js($language->id);
+  _locale_invalidate_js($language->id());
 }
 
 /**
- * Implements hook_language_delete().
+ * Implements hook_ENTITY_TYPE_delete() for 'language_entity'.
  */
-function locale_language_delete($language) {
+function locale_language_entity_delete(LanguageEntity $language) {
   // Remove translations.
-  \Drupal::service('locale.storage')->deleteTranslations(array('language' => $language->id));
+  \Drupal::service('locale.storage')->deleteTranslations(array('language' => $language->id()));
 
   // Remove interface translation files.
   module_load_include('inc', 'locale', 'locale.bulk');
-  locale_translate_delete_translation_files(array(), array($language->id));
+  locale_translate_delete_translation_files(array(), array($language->id()));
 
   // Remove translated configuration objects.
-  \Drupal\locale\Locale::config()->deleteLanguageTranslations($language->id);
+  \Drupal\locale\Locale::config()->deleteLanguageTranslations($language->id());
 
   // Changing the language settings impacts the interface:
-  _locale_invalidate_js($language->id);
+  _locale_invalidate_js($language->id());
   \Drupal::cache('page')->deleteAll();
 
   // Clear locale translation caches.
-  locale_translation_status_delete_languages(array($language->id));
-  \Drupal::cache()->delete('locale:' . $language->id);
+  locale_translation_status_delete_languages(array($language->id()));
+  \Drupal::cache()->delete('locale:' . $language->id());
 }
 
 /**
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index a226e592c9b..0c0c99df508 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -21,6 +21,7 @@ use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
 use Drupal\Core\Entity\Display\EntityFormDisplayInterface;
 use Drupal\Core\Template\Attribute;
 use Drupal\file\Entity\File;
+use Drupal\language\Entity\Language as LanguageEntity;
 use Symfony\Cmf\Component\Routing\RouteObjectInterface;
 
 /**
@@ -1810,13 +1811,13 @@ function node_file_download_access($field, EntityInterface $entity, File $file)
 }
 
 /**
- * Implements hook_language_delete().
+ * Implements hook_ENTITY_TYPE_delete() for 'language_entity'.
  */
-function node_language_delete($language) {
+function node_language_entity_delete(LanguageEntity $language) {
   // On nodes with this language, unset the language.
   db_update('node_revision')
     ->fields(array('langcode' => ''))
-    ->condition('langcode', $language->id)
+    ->condition('langcode', $language->id())
     ->execute();
 }