Sayed Borhan (1624-1680) was Khan of the Qasim Khanate from 1627 to 1679, succeeding Arslanghali and preceding Fatima Soltan. A son of Arslanghali and Fatima Soltan, he reigned over the Qasim Khanate as a vassal of Muscovy, and Russian authorities enforced Christianization. He abdicated in 1679 and was baptized, and he died a year later.