Muhammad Qasim bin Janibek Khan (, romanized: Qasym bin Jänıbek Han), known by his shortened regal name as Qasim Khan (also spelled as Kasym Khan) was a son of Janibek Khan. He ruled as the fourth Khan of the Kazakh Khanate from about 1511 to 1521. He is viewed as the greatest leader to unite the Kazakh tribes.