Sayed Borhan Khan (Volga Türki and Persian: سید برهان خان; c. 1624 – c. 1680) was Khan of the Qasim Khanate from 1627 to 1679.
Reign
He was a son of Arslanghali and Fatima Soltan. After the death of his father, he was crowned as the khan of Qasim. Sayed Borhan's regents were Fatima Soltan and her father Agha Muhammad Shah Quli Sayyid. During his reign, the Khanate was totally placed under the control of Moscow and Russian authorities enforced Christianization. In 1679, Sayed Borhan abdicated and was baptized as Vasili.