In team sport, captain is a title given to a member of the team. The title is frequently honorary, but in some cases the captain may have significant responsibility for strategy and teamwork while the game is in progress on the field. In either case, it is a position that indicates honor and respect from one's teammates – recognition as a leader by one's peers. In association football and cricket, a captain is also known as a skipper.

Various sports have differing roles and responsibilities for team captains. Depending on the sport, team captains may be given the responsibility of interacting with game officials regarding application and interpretation of the rules. In many team sports, the captains represent their respective teams when the match official does the coin toss at the beginning of the game.

The team captain, in some sports, is selected by the team coach, who may consider factors ranging from playing ability to leadership to serving as a good moral example to the team. Coaches may also choose to change team captains from time to time, or to have a rotation of team captains.

Some of the greatest captains in history are the ones with the most subtle of traits that are required for success. From Sam Walker in his book The Captain Class he states that a captain is "the most important factor for a team's success".