Şahkulu (Ottoman Turkish: شاه قولی, romanized: Şāh Ḳulu, lit. 'servant of shah'; died July 2, 1511), also known as Şahkulu Baba, or Karabıyıkoğlu (lit. 'son of black moustache' in Turkish), was the leader of the pro-Shia and pro-Safavid uprising in Anatolia – the Şahkulu Rebellion – directed against the Ottoman Empire in 1511. He was viewed as a Messiah and Prophet by his followers. His death in battle signified the end of the uprising.