Brigadier John Amadu Bangura, CBE (8 March 1930 – 29 March 1970) was a Sierra Leonean who served as Chief of the Defence Staff of the Sierra Leone Armed Forces from 1968 to 1970. Prior to this in 1967, he served as the Sierra Leonean Ambassador of to the United States. He was the acting Governor-General of Sierra Leone from 18 April 1968 until 22 April 1968. He led the Sergeants' Coup in 1968 that successfully re-instated civilian rule in Sierra Leone.