John Frederick Freund (April 27, 1918 – March 22, 2001) was the thirty-sixth Adjutant General of the State of Connecticut.

From April 1943 to July 1945, he served as executive officer and battalion commander of combat units in the European Theater of Operations.

In 1946, Freund represented HQ, Army Ground Forces as Liaison Officer for Guided Missiles at the Wright-Patterson Air Development Center.

[4] During 1953 to 1957, Freund was assigned to the Weapons Systems Evaluation Group, Office of the Secretary of Defense, as an army member and guided missile specialists.

In September 1964 he served as adviser to Army of the Republic of Vietnam Brigadier General Nguyễn Hữu Có, the commander of II Corps and he played a key role in defusing the Buôn Ma Thuột rebellion by the United Front for the Liberation of Oppressed Races.

[7] In October 1967, he was assigned to West Germany where he served as Chief of Staff of VII Corps.

[2] During this assignment, he increased the National Guard budget and many armories were built, including the one that now stands in New Britain, Connecticut.