Yang Dipertuan Besar Syarif Kasim Abdul Jalil Saifuddin or Sultan Syarif Kasim II (Jawi: شريف قاسم عبدالجليل سيف الدين‎; 1 December 1893 – 23 April 1968) was the 12th and last sultan of the Sultanate of Siak Sri Indrapura.

[1][2] Sultan Syarif Kasim II was a supporter of the independence struggle in Indonesia.

After Indonesia proclaimed independence, he ceded Siak Sultanate to be part of united Indonesia, and he contributed his wealth of 13 million guilders (equivalent to 151 million guilders or €69 million in 2011).

Together with the Sultan of Serdang, he also tried to persuade other kings of East Sumatra to join the republic cause.

This Indonesian biographical article is a stub.