From Old French meaning 'a Breton,' originally denoting someone from Brittany.
Brett began as an English surname meaning "a Breton," referring to someone from Brittany in northwestern France. The word goes back to ethnic and geographic labeling in medieval Britain, where names often marked where a person came from rather than who they were individually. Like many surnames that later became first names, Brett carries that clipped, mobile energy of a label turned identity.
It is concise, brisk, and unmistakably Anglo in sound. As a given name, Brett rose most strongly in the 20th century, especially in the English-speaking world, where surname-style masculinity became fashionable. It often sounded sporty, confident, and modern, helped by public figures such as quarterback Brett Favre and by fictional uses that gave it a cool, contemporary sheen.
Yet the name also has a literary footnote: Lady Brett Ashley in Hemingway’s The Sun Also Rises made Brett memorable as a woman’s name too, lending it an androgynous glamour rare for its time. That dual history is part of what makes Brett interesting. It is rooted in medieval identity and migration, but in modern ears it feels clean-cut and late-20th-century. The name’s perception has evolved from ethnic surname to streamlined first name, and today it often reads as straightforward, capable, and slightly vintage in the best sense.