Deputy Chief of the Army Staff (DCOAS) may refer to:
Deputy Chief of the Army Staff (India), the third highest ranking army officer. Deputy Chief of the Army Staff (Australia), the second highest ranking army officer. Deputy Chief of the Army Staff (Pakistan), former third highest ranking army officer. Deputy Chief of Army Staff (Bangladesh)
See also Vice Chief of the Army Staff (disambiguation) Deputy Chief of the Air Staff (disambiguation) Deputy Chief of the Naval Staff (disambiguation)