Charles J Timmes (July 18, 1907 – October 20, 1990) was a United States Army Major General and chief of the Military Assistance Advisory Group in the early 1960s.

Timmes was born in Innsbruck, Austro-Hungarian Empire where his father, an American medical doctor was pursuing advanced studies.

Lt. Col. Timmes was commander of the 2nd Battalion, 507th Parachute Infantry Regiment which was dropped on Mission Boston, part of the American airborne landings in Normandy on the morning of 6 June 1944.

[1][3] In July 1961, Timmes was sent to South Vietnam, where he served as deputy to Military Assistance Advisory Group (MAAG) chief Lt. Gen. Lionel C. McGarr.

During this period Timmes built relations with many of the Army of the Republic of Vietnam (ARVN) officers who would play important roles during the war including General Dương Văn Minh.

[5] Timmes acted as a go-between for the US Embassy and the South Vietnamese Government during the Fall of Saigon and was instrumental in facilitating the resignation of President Nguyễn Văn Thiệu on 21 April and the ascent of Dương Văn Minh to the presidency on 27 April in the hope that he would be able to negotiate a ceasefire with the North Vietnamese.