My Big Fat Greek Wedding is a 2002 romantic comedy film directed by Joel Zwick and written by Nia Vardalos. The film stars Vardalos, John Corbett, Lainie Kazan, Michael Constantine, Gia Carides, Louis Mandylor, Andrea Martin, and Joey Fatone. It follows a young Greek-American woman who falls in love with a non-Greek and struggles to get her family to accept him while she comes to terms with her heritage and cultural identity.

An international co-production between the United States and Canada, the film premiered at the American Film Market on February 22, 2002, and was theatrically released in the United States on April 19, 2002, by IFC Films. It received positive reviews from critics and was a box office success, grossing $368.7 million worldwide against its $5 million budget, becoming the ninth-highest-grossing film of 2002. It was nominated for Best Original Screenplay at the 75th Academy Awards and for Best Motion Picture – Musical or Comedy and Best Actress in a Motion Picture – Musical or Comedy for Vardalos at the 60th Golden Globe Awards.

The film spawned a franchise, which inspired the 2003 sitcom My Big Fat Greek Life and the 2016 sequel My Big Fat Greek Wedding 2. A third film, titled My Big Fat Greek Wedding 3, was released in theaters on September 8, 2023.