diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index 906a7c1..56b657c 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -2773,7 +2773,8 @@ function language_list($flags = LANGUAGE_CONFIGURABLE) {
     $default = language_default();
     if (language_multilingual() || module_exists('language')) {
       // Use language module configuration if available.
-      $languages = db_query('SELECT * FROM {language} ORDER BY weight ASC, name ASC')->fetchAllAssoc('langcode', PDO::FETCH_ASSOC);
+      $languages = entity_load_multiple('language');
+      uasort($languages, 'Drupal\config\ConfigEntityBase::language');
 
       // Initialize default property so callers have an easy reference and can
       // save the same object without data loss.
diff --git a/core/lib/Drupal/Core/Language/Language.php b/core/lib/Drupal/Core/Language/Language.php
index 4db85da..964add7 100644
--- a/core/lib/Drupal/Core/Language/Language.php
+++ b/core/lib/Drupal/Core/Language/Language.php
@@ -6,6 +6,7 @@
  */
 
 namespace Drupal\Core\Language;
+use Drupal\Config\ConfigEntityBase;
 
 /**
  * An object containing the information for an interface language.
@@ -16,17 +17,66 @@ namespace Drupal\Core\Language;
  *
  * @see language_default()
  */
-class Language {
-  // Properties within the Language are set up as the default language.
-  public $name = '';
-  public $langcode = '';
+class Language extends ConfigEntityBase {
+
+  /**
+   * The language UUID.
+   *
+   * @var string
+   */
+  public $uuid;
+
+  /**
+   * Language code, e.g. 'de' or 'en-US'.
+   *
+   * @var string
+   */
+  public $langcode;
+
+  /**
+   * The language name.
+   *
+   * @var string
+   */
+  public $name;
+
+  /**
+   * Direction of language (Left-to-Right = 0, Right-to-Left = 1).
+   *
+   * @var int
+   */
   public $direction = LANGUAGE_LTR;
-  public $weight = 0;
-  public $default = FALSE;
-  public $method_id = NULL;
+
+  /**
+   * A boolean indicating whether the administrator can edit or delete the
+   * language.
+   *
+   * @var bool
+   */
   public $locked = FALSE;
 
   /**
+   * Weight of this language (used for sorting).
+   *
+   * @var int
+   */
+  public $weight = 0;
+
+  /**
+   * A boolean indicating whether the language is the default for the site.
+   *
+   * @var bool
+   */
+  protected $default;
+
+  /**
+   * The language negotiation mechanism.
+   *
+   * @var int
+   */
+  public $method_id;
+
+  /**
    * Language constructor builds the default language object.
    *
    * @param array $options
@@ -63,4 +113,22 @@ class Language {
       $this->$var = $value;
     }
   }
+
+  /**
+   * Return TRUE if the current language is the dafult of the site.
+   *
+   * @return boolean
+   */
+  public function isDefault() {
+    return $this->default;
+  }
+
+  /**
+   * Set the status for the default value.
+   *
+   * @param bool $value
+   */
+  public function setDefault($value) {
+    $this->default = $value;
+  }
 }
diff --git a/core/modules/config/config.info b/core/modules/config/config.info
index 380f17e..9e73fa1 100644
--- a/core/modules/config/config.info
+++ b/core/modules/config/config.info
@@ -3,3 +3,7 @@ description = Allows administrators to manage configuration changes.
 package = Core
 version = VERSION
 core = 8.x
+; @todo D8: Config module is required for all modules that implement
+;   ConfigEntityBase. Move the entity system and ConfigEntity* into a
+;   Drupal\Core component to remove this required dependency.
+required = TRUE
diff --git a/core/modules/language/language.admin.inc b/core/modules/language/language.admin.inc
index af2b3b1..55df5d3 100644
--- a/core/modules/language/language.admin.inc
+++ b/core/modules/language/language.admin.inc
@@ -169,7 +169,7 @@ function language_admin_overview_form_submit($form, &$form_state) {
   $old_default = language_default();
 
   foreach ($languages as $langcode => $language) {
-    $language->default = ($form_state['values']['site_default'] == $langcode);
+    $language->setDefault($form_state['values']['site_default'] == $langcode));
     $language->weight = $form_state['values']['languages'][$langcode]['weight'];
     language_save($language);
   }
@@ -696,7 +696,7 @@ function language_negotiation_configure_url_form($form, &$form_state) {
     $t_args = array('%language' => $language->name, '%langcode' => $language->langcode);
     $form['prefix'][$langcode] = array(
       '#type' => 'textfield',
-      '#title' => $language->default ? t('%language (%langcode) path prefix (Default language)', $t_args) : t('%language (%langcode) path prefix', $t_args),
+      '#title' => $language->isDefault() ? t('%language (%langcode) path prefix (Default language)', $t_args) : t('%language (%langcode) path prefix', $t_args),
       '#maxlength' => 64,
       '#default_value' => isset($prefixes[$langcode]) ? $prefixes[$langcode] : '',
       '#field_prefix' => $base_url . '/',
@@ -734,7 +734,7 @@ function language_negotiation_configure_url_form_validate($form, &$form_state) {
     $value = $form_state['values']['prefix'][$langcode];
 
     if ($value === '') {
-      if (!$language->default && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_PREFIX) {
+      if (!$language->isDefault() && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_PREFIX) {
         // Throw a form error if the prefix is blank for a non-default language,
         // although it is required for selected negotiation type.
         form_error($form['prefix'][$langcode], t('The prefix may only be left blank for the default language.'));
@@ -758,7 +758,7 @@ function language_negotiation_configure_url_form_validate($form, &$form_state) {
     $value = $form_state['values']['domain'][$langcode];
 
     if ($value === '') {
-      if (!$language->default && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_DOMAIN) {
+      if (!$language->isDefault() && $form_state['values']['language_negotiation_url_part'] == LANGUAGE_NEGOTIATION_URL_DOMAIN) {
         // Throw a form error if the domain is blank for a non-default language,
         // although it is required for selected negotiation type.
         form_error($form['domain'][$langcode], t('The domain may only be left blank for the default language.'));
diff --git a/core/modules/language/language.api.php b/core/modules/language/language.api.php
index 6f19835..9d413ad 100644
--- a/core/modules/language/language.api.php
+++ b/core/modules/language/language.api.php
@@ -17,7 +17,7 @@
  *   A language object.
  */
 function hook_language_presave($language) {
-  if ($language->default) {
+  if ($language->isDefault()) {
     // React to a new default language.
     example_new_default_language($language);
   }
diff --git a/core/modules/language/language.install b/core/modules/language/language.install
index 2884d4b..0b1db76 100644
--- a/core/modules/language/language.install
+++ b/core/modules/language/language.install
@@ -55,55 +55,6 @@ function language_uninstall() {
 }
 
 /**
- * Implements hook_schema().
- */
-function language_schema() {
-  $schema['language'] = array(
-    'description' => 'List of all available languages in the system.',
-    'fields' => array(
-      'langcode' => array(
-        'type' => 'varchar',
-        'length' => 12,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => "Language code, e.g. 'de' or 'en-US'.",
-      ),
-      'name' => array(
-        'type' => 'varchar',
-        'length' => 64,
-        'not null' => TRUE,
-        'default' => '',
-        'description' => 'Language name.',
-      ),
-      'direction' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Direction of language (Left-to-Right = 0, Right-to-Left = 1).',
-      ),
-      'weight' => array(
-        'type' => 'int',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'Weight, used in lists of languages.',
-      ),
-      'locked' => array(
-        'type' => 'int',
-        'size' => 'tiny',
-        'not null' => TRUE,
-        'default' => 0,
-        'description' => 'A boolean indicating whether the administrator can edit or delete the language.',
-      ),
-    ),
-    'primary key' => array('langcode'),
-    'indexes' => array(
-      'list' => array('weight', 'name'),
-    ),
-  );
-  return $schema;
-}
-
-/**
  * Implements hook_enable().
  */
 function language_enable() {
@@ -121,3 +72,33 @@ function language_disable() {
   // will be FALSE, because the language module is disabled.
   variable_set('language_count', 1);
 }
+
+/**
+ * Migrate languages into configuration.
+ *
+ * @ingroup config_upgrade
+ */
+function language_update_8001() {
+  $result = db_query('SELECT * FROM {language}');
+  foreach ($result as $language) {
+    // Save the config object.
+    config('language.site_language.' . $language->langcode)
+      ->set('langcode', $language->langcode)
+      ->set('direction', $language->direction)
+      ->set('locked', $language->locked)
+      ->set('weight', $language->weight)
+      ->save();
+  }
+}
+
+/**
+ * Drop the {language} table.
+ */
+function language_update_8002() {
+  db_drop_table('language');
+}
+
+/**
+ * @} End of "defgroup updates-7.x-to-8.x".
+ * The next series of updates should start at 9000.
+ */
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 5b62382..308ec62 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -247,7 +247,7 @@ function language_save($language) {
     watchdog('language', 'The %language (%langcode) language has been updated.', $t_args);
   }
 
-  if (!empty($language->default)) {
+  if ($language->isDefault()) {
     // Set the new version of this language as default in a variable.
     $default_language = language_default();
     variable_set('language_default', (array) $language);
@@ -336,6 +336,73 @@ function language_css_alter(&$css) {
 }
 
 /**
+ * Implements MODULE_config_import_create().
+ */
+function language_config_import_create($name, $new_config, $old_config) {
+  if (strpos($name, 'language.site_language.') !== 0) {
+    return FALSE;
+  }
+
+  $language = entity_create('language', $new_config->get());
+  $language->save();
+  return TRUE;
+}
+
+/**
+ * Implements MODULE_config_import_change().
+ */
+function language_config_import_change($name, $new_config, $old_config) {
+  if (strpos($name, 'language.site_language.') !== 0) {
+    return FALSE;
+  }
+
+  list(, , $id) = explode('.', $name);
+  $language = entity_load('language', $id);
+
+  $language->original = clone $language;
+  foreach ($old_config->get() as $property => $value) {
+    $language->original->$property = $value;
+  }
+
+  foreach ($new_config->get() as $property => $value) {
+    $language->$property = $value;
+  }
+
+  $language->save();
+  return TRUE;
+}
+
+/**
+ * Implements MODULE_config_import_delete().
+ */
+function language_config_import_delete($name, $new_config, $old_config) {
+  if (strpos($name, 'language.site_language.') !== 0) {
+    return FALSE;
+  }
+
+  list(, , $id) = explode('.', $name);
+  entity_delete_multiple('language', array($id));
+  return TRUE;
+}
+
+/**
+ * Implements hook_entity_info().
+ */
+function language_entity_info() {
+  $types['language'] = array(
+    'label' => 'Language',
+    'controller class' => 'Drupal\config\ConfigStorageController',
+    'entity class' => 'Drupal\language\Language',
+    'config prefix' => 'language.site_language',
+    'entity keys' => array(
+      'langcode' => 'langcode',
+      'uuid' => 'uuid',
+    ),
+  );
+  return $types;
+}
+
+/**
  * Implements hook_language_types_info().
  *
  * Defines the three core language types:
diff --git a/core/modules/language/language.negotiation.inc b/core/modules/language/language.negotiation.inc
index fa6a517..542ce1f 100644
--- a/core/modules/language/language.negotiation.inc
+++ b/core/modules/language/language.negotiation.inc
@@ -518,7 +518,7 @@ function language_negotiation_url_prefixes_update() {
     if (empty($prefixes[$language->langcode])) {
       // For the default language, set the prefix to the empty string,
       // otherwise use the langcode.
-      $prefixes[$language->langcode] = !empty($language->default) ? '' : $language->langcode;
+      $prefixes[$language->langcode] = $language->isDefault() ? '' : $language->langcode;
     }
     // Otherwise we keep the configured prefix.
   }
diff --git a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
index 7a30cb0..51b4954 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
@@ -42,7 +42,7 @@ class LanguageUpgradePathTest extends UpgradePathTestBase {
     $this->assertTrue(language_default()->langcode == 'ca', t('Catalan is the default language'));
     $languages = language_list(LANGUAGE_ALL);
     foreach ($languages as $language) {
-      $this->assertTrue($language->default == ($language->langcode == 'ca'), t('@language default property properly set', array('@language' => $language->name)));
+      $this->assertTrue($language->isDefault() == ($language->langcode == 'ca'), t('@language default property properly set', array('@language' => $language->name)));
     }
 
     // Check that both comments display on the node.