A viceroy's commissioned officer (VCO) was a senior Indian member of the British Indian Army. VCOs were senior in rank to warrant officers in the British Army, and held a commission issued by the viceroy. Also known as "Indian officers" or "native officers", they had authority only over Indian troops and were subordinate to all British King's (resp. Queen's) commissioned officers (KCO resp. QCO), Indian Commissioned Officers (ICO) and King's commissioned Indian officers (KCIO).
Similar ranks, as listed below, are retained in the Indian Army and Pakistan Army. There, they are known as junior commissioned officers.