Brett \b-re-tt\ as a boy's name (also used as girl's name Brett), is pronounced bret. It is of Latin origin, and the meaning of Brett is "from Britanny or Britain". Transferred use of the surname, which originated in the Middle Ages as an ethnic name for a native of Brittany (France), or Britain (England). American writer Bret Harte; French painter Jules Breton; baseball players Brett Butler, and Brett Saberhagen; football player Brett Favre.
For more information, see also the related name Brent.