Fiesta is a 1947 American Technicolor musical drama film directed by Richard Thorpe and starring Esther Williams, Ricardo Montalbán, Mary Astor and Cyd Charisse. It was released by Metro-Goldwyn-Mayer. The screenplay was written by George Bruce and Lester Cole.

The story focuses on Mario Morales (Montalbán), a bullfighter who wants to be a composer, and his twin sister, Maria Morales (Williams), who wants to be a bullfighter even though she is a woman.

The film was shot on location in Puebla, Mexico. This was Montalbán's first credited role in a Hollywood film, and resulted in him being offered a contract by the studio. It was also the first of three films pairing Williams and Montalbán, the other two being On an Island with You (1948) and Neptune's Daughter (1949).

Fiesta was the first time Williams's name was billed above the title in the marketing, though in the onscreen credits, all the actors are below the title.