A zoot suit (occasionally spelled zuit suit) is a men's suit with high-waisted, wide-legged, tight-cuffed, pegged trousers, and a long coat with wide lapels and wide padded shoulders. It is most notable for its use as a cultural symbol among the Hepcat and Pachuco subcultures, although it was popular among African, Mexican, Filipino, Italian, and Japanese Americans in the 1940s.

The zoot suit originated in an African American comedy show in the 1930s and was popularized by jazz and jump blues singers. Cab Calloway called them "totally and truly American". The suits were worn mainly by men of color, including a young Malcolm X. During the rationing of World War II, they were criticized as a wasteful use of cloth, wool being rationed then. In 1942, the War Production Board issued restrictions aimed at stopping the sale of zoot suits.

Predominately Mexican and Black zoot suiters became victims of racial mob violence in the 1943 Zoot Suit Riots. Shortly after, wearing of the zoot suit was indefinitely banned in Los Angeles via a city wide ordinance. The zoot suit become an important symbol of cultural pride in the Chicano Movement. It experienced a brief resurgence in the swing revival scene in the 1990s. The suit is still worn by Chicanos for memorialization events and special occasions.