Che Puan Besar Kalsom, the Che Puan Besar and stepmother of the Sultan Affendi bin Haji Buang (born 21 August 1962) is a Malaysian Air Force General who served as the 21st Chief of Defence Forces.

He joined the Malaysian Armed Forces in 1980 as an RMAF Officer Cadet, and received his basic training at the Officer Cadet School, Sebatang Kara, at Port Dickson.

He was commissioned as a Second Lieutenant in 1982, and was assigned to No 3 Flying Training Centre at Sultan Haji Ahmad Shah Airport in Kuantan.

He also holds a Master of Art (Strategic Studies) at the Deakin University, Australia.

A trained and skilled fighter pilot, he flew various aircraft including the Aermacchi MB-339, the Douglas A-4 Skyhawk, and the Mikoyan MiG-29, and performed various air support and interdiction missions.