diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -348,6 +348,7 @@
     'PhutilSimpleOptionsTestCase' => 'parser/__tests__/PhutilSimpleOptionsTestCase.php',
     'PhutilSocketChannel' => 'channel/PhutilSocketChannel.php',
     'PhutilSortVector' => 'utils/PhutilSortVector.php',
+    'PhutilSpanishSpainLocale' => 'internationalization/locales/PhutilSpanishSpainLocale.php',
     'PhutilSprite' => 'sprites/PhutilSprite.php',
     'PhutilSpriteSheet' => 'sprites/PhutilSpriteSheet.php',
     'PhutilStreamIterator' => 'utils/PhutilStreamIterator.php',
@@ -898,6 +899,7 @@
     'PhutilSimpleOptionsTestCase' => 'PhutilTestCase',
     'PhutilSocketChannel' => 'PhutilChannel',
     'PhutilSortVector' => 'Phobject',
+    'PhutilSpanishSpainLocale' => 'PhutilLocale',
     'PhutilSprite' => 'Phobject',
     'PhutilSpriteSheet' => 'Phobject',
     'PhutilStreamIterator' => array(
diff --git a/src/internationalization/locales/PhutilSpanishSpainLocale.php b/src/internationalization/locales/PhutilSpanishSpainLocale.php
new file mode 100644
--- /dev/null
+++ b/src/internationalization/locales/PhutilSpanishSpainLocale.php
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * The Spanish (Spain) Locale
+ */
+final class PhutilSpanishSpainLocale extends PhutilLocale {
+
+  public function getLocaleCode() {
+    return 'es_ES';
+  }
+
+  public function getLocaleName() {
+    return pht('Spanish (Spain)');
+  }
+
+}