Joseph Peter Vachon (23 January 1887 – 31 December 1961) was a retired United States Army brigadier general.

Vachon reenlisted in the Coast Artillery Corps in June 1908, again advancing from private to sergeant.

[1] In October 1940, Vachon received a temporary promotion to colonel which was made permanent in May 1941.

He assumed command of the 101st Division and then received a temporary promotion to brigadier general in December 1941.

[2] After the war, Vachon retired from active duty as a brigadier general on 31 August 1946.