Ya'qub (Yakub) Shah Chak (Persian: ????? ??? ??) was the sixth and the last Chak Sultan of Kashmir Sultanate, who reigned from 1586 to 1589. Yakub succeeded his father Yousuf Shah Chak, under warlike conditions, after Kashmir was invaded by the Mughal forces in late 1585.

The aggressive Yakub firmly established a well-built