A referee is a person who has the responsibility of ensuring that a sports match is played according to the rules and regulations of the game. They make decisions on issues such as penalties, fouls, and goals. The referee is typically the highest authority on the field or court and their decision is final. The referee's role is to ensure that the game is played fairly and safely, and to maintain order and control throughout the match. They may also communicate with coaches and players, keep track of game time, and enforce sportsmanship and respect for fellow players.