Brett is a common male given name that has origins in English and Celtic cultures. It is often associated with the meaning "from Britain" or "a Breton." The name has been popular in various countries, particularly in the United States, where it gained prominence in the 20th century. In addition to being a name, Brett can also refer to notable individuals, such as Brett Favre, a former professional American football quarterback known for his time with the Green Bay Packers. The name is also used in various contexts, including sports, entertainment, and literature.