The İske Taş (Tatar pronunciation: [isˈke tʌʃ]) or Iske Tash Mosque, also the Old Stone Mosque (via Tatar Cyrillic: Иске Таш мәчет, Latin: İske Taş mäçet, Russian: Старокаменная мечеть, мечеть Иске-Таш, Starokamennaya, Iske-Tash) or the Mosque of the Old Stone (via Tatar Cyrillic: Иске Таш мәчете, Latin: İske Taş mäçete), formerly known as The Ninth Cathedral Mosque, The Big Stone Mosque, is a mosque in Kazan, Russia.