- a person commissioned to act officially; member of a commission.
- a government official or representative in charge of a department or district: the police commissioner; the commissioner of a colony.
- an official chosen by an athletic association to exercise broad administrative or judicial authority: the baseball commissioner.
- a person authorized to perform certain tasks or endowed with certain powers
- government
- any of several types of civil servant
- an ombudsman
- a member of a commission
