Major-General Benjamin Gottlieb "Barend" Viljoen (13 April 19081995) was a South African military commander.
He joined the South African Air Force in 1927, and served in World War II. He also served as to the and to the . He was from 23 September 1956 to 30 April 1965.
He was awarded the Order of the British Empire in 1944.
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