It's Always Fair Weather is a 1955 American musical romantic comedy film directed by Gene Kelly and Stanley Donen. The film was scripted by Betty Comden and Adolph Green, who also wrote the show's lyrics, with music by André Previn. It stars Kelly, Dan Dailey, Cyd Charisse, Dolores Gray, and dancer/choreographer Michael Kidd in his first film acting role.

The film, co-directed by Kelly and Donen, was shot in CinemaScope and Eastmancolor. Although well-received critically at the time, it was not a commercial success, and is one of the last major dance-oriented MGM musicals. In recent years, it has been recognized as a seminal film because of the inventiveness of its dance routines.

It's Always Fair Weather is noted for its downbeat theme, unusual for a musical, which may have hurt it at the box office, and has been called a rare "cynical musical".