Adewale Ademoyega (died February 21, 2007) was one of the five mutinous Nigerian Army Majors who led the 1966 coup that ended the first democratic Nigerian government.
Adewale was born in Ode Remo in present-day Ogun State in southwestern Nigeria. He earned a degree in history from the University of London. He was one of the first graduates that enrolled as an officer in the Nigerian Army along with Lieutenant Colonels Chukwuemeka Odumegwu-Ojukwu and Victor Banjo, and Majors Olufemi Olutoye, Emmanuel Ifeajuna, and Oluwole Rotimi in the 1966 Nigerian army. Adewale Ademoyega was the last graduate to be commissioned directly into the Nigerian Army Infantry.
During the Biafran civil war, Adewale fought in the "Nigerian Liberation Army", a part of the Biafran army led by Lieutenant Colonel Banjo.
Major Ademoyega was released by Major Chukwuma, a participant in the coup d'état of April 1966 on August 13, 1966. He then formed the 19th Battalion and subsequently took over for Major Emmanuel Ifeajuna, who also helped with the 1966 coup as the chief of staff of the Liberation Army.
Ademoyega was later detained after the war for his participation as part as the Liberation Army but was released along with twenty others during the 1974 Independence Day amnesty.
Major Adewale Ademoyega's book about the military coup d'état is regarded as one of the most authoritative regarding the first Nigerian coup.
Adewale Ademoyega died on February 21, 2007 after being ill for sometime.