Syarif Kasim II
 Yang Dipertuan Besar Syarif Kasim Abdul Jalil Saifuddin or Sultan Syarif Kasim II (born in Sultanate of Siak Sri Indrapura Riau December 1 1893 - died in Rumbai Pekanbaru Riau Indonesia 23 April 1968) was the 12th sultan of the Sultanate of Siak. He crowned as the sultan at age 23 succeeded his father Sultan Syarif Hasyim. Sultan Syarif Kasim II is a supporter of the independence struggle Indonesia.