Zainab Sultan Begum was Queen consort of Ferghana Valley and Kabul as the second wife of the first Mughal emperor Babur. She like two of his other wives Aisha Sultan Begum and Masuma Sultan Begum was a direct cousin of the Mughal emperor. She was among one of the first Mughal cousins to marry among the own family, which later became a common practice, which would be especially be followed by Humayun, the second Mughal emperor who succeeded Babur after his death in 1530.