diff --git a/core/lib/Drupal/Core/Language/Language.php b/core/lib/Drupal/Core/Language/Language.php
index 9b9223d..c8e6a8c 100644
--- a/core/lib/Drupal/Core/Language/Language.php
+++ b/core/lib/Drupal/Core/Language/Language.php
@@ -16,7 +16,7 @@ namespace Drupal\Core\Language;
  *
  * @see language_default()
  */
-class Language {
+class Language implements LanguageInterface {
   // Properties within the Language are set up as the default language.
   public $name = 'English';
   public $langcode = 'en';
@@ -40,6 +40,113 @@ class Language {
   }
 
   /**
+   * {@inheritDoc}
+   *
+   * @todo Can we use {@inheritDoc} here to use the docs from LanguageInterface?
+   */
+  public function getName() {
+    return $this->name;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setName($name) {
+    $this->name = $name;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getLangCode() {
+    return $this->name;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setLangCode($langcode) {
+    $this->langcode = $langcode;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getDirection() {
+    return $this->direction;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setDirection($direction) {
+    $this->direction = $direction;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getEnabled() {
+    return $this->enabled;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setEnabled($enabled) {
+    $this->enabled = $enabled;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getWeight() {
+    return $this->weight;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setWeight($weight) {
+    $this->weight = $weight;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getDefault() {
+    return $this->default;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setDefault($default) {
+    $this->default = $default;
+    return $this;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function getMethodId() {
+    return $this->method_id;
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public function setMethodId($method_id) {
+    $this->method_id = $method_id;
+    return $this;
+  }
+
+  /**
    * Extend $this with properties from the given object.
    *
    * @todo Remove this function once $GLOBALS['language'] is gone.
diff --git a/core/lib/Drupal/Core/Language/LanguageInterface.php b/core/lib/Drupal/Core/Language/LanguageInterface.php
new file mode 100644
index 0000000..3b46836
--- /dev/null
+++ b/core/lib/Drupal/Core/Language/LanguageInterface.php
@@ -0,0 +1,104 @@
+<?php
+
+/**
+ * @file
+ * Definition of Drupal\Core\Language\LanguageInterface.
+ */
+
+namespace Drupal\Core\Language;
+
+/**
+ * Base interface for interacting with a Language.
+ */
+interface LanguageInterface {
+  /**
+   * Get the name of the Language object.
+   */
+  public function getName();
+
+  /**
+   * Sets the name within the Language object.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setName($name);
+
+  /**
+   * Retrieve the language code.
+   */
+  public function getLangCode();
+
+  /**
+   * Set the language code.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setLangCode($langcode);
+
+  /**
+   * Get whether the language is a left-to-right, or right-to-left language.
+   */
+  public function getDirection();
+
+  /**
+   * Set the direction of the language.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setDirection($direction);
+
+  /**
+   * Get whether this language is enabled.
+   */
+  public function getEnabled();
+
+  /**
+   * Set whether this language is enabled.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setEnabled($enabled);
+
+  /**
+   * Get the weight of the language object.
+   */
+  public function getWeight();
+
+  /**
+   * Set the weight of the language object.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setWeight($weight);
+
+  /**
+   * Gets whether this language is the default language.
+   */
+  public function getDefault();
+
+  /**
+   * Set whether this language is the default language.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setDefault($default);
+
+  /**
+   * Get the method id for this language.
+   */
+  public function getMethodId();
+
+  /**
+   * Set the method id for this language.
+   *
+   * @return Drupal\Core\Language\LanguageInterface
+   *   Returns the object itself.
+   */
+  public function setMethodId($method_id);
+}