The Chief of Army Staff is the highest ranking military officer of the Nigerian Army. The position is often occupied by the most senior commissioned officer appointed by the Commander-in-Chief of the Armed Forces of Nigeria. The Chief of Army Staff reports to the Chief of Defence Staff, who also reports to the Defence Minister. The Statutory duty of the Officer is to formulate and execute policies towards the highest attainment of National Security and operational competence of the force.
Following is a chronological list of officers holding the position of General Officer Commanding (GOC) or Chief of Army Staff (COAS).