diff --git a/Casks/thunderbird-ja.rb b/Casks/thunderbird-ja.rb
new file mode 100644
index 000000000..be01c5417
--- /dev/null
+++ b/Casks/thunderbird-ja.rb
@@ -0,0 +1,7 @@
+class ThunderbirdJa < Cask
+  url 'http://download-installer.cdn.mozilla.net/pub/thunderbird/releases/24.2.0/mac/ja-JP-mac/Thunderbird%2024.2.0.dmg'
+  homepage 'http://www.mozilla.jp/thunderbird/'
+  version '24.2.0'
+  sha1 'aeb874de260df0cfb0cec06d24d9fc3baf343059'
+  link 'Thunderbird.app'
+end