Sun Sijing (Chinese: 孙思敬; born December 1951) is a retired general of the People's Liberation Army who served as Political Commissar of the People's Armed Police.

He joined the People's Liberation Army (PLA) in 1969, and began work as a political liaison in an artillery force.

He rose through the ranks serving in mostly political roles - that is, he presumably did not have much combat experience.

In 1999 he became political commissar of the PLA's First Medical University, and by October 2002 became political commissar of the 301 Military Hospital, the top hospital of the PLA and often used as a treatment facility for top civilian leaders as well.

In December 2010 he became political commissar of the PLA Academy of Military Science.