Gigi is a novel by the French sentimental romance writer Colette about a wealthy cultured man of fashion who discovers that he is in love with a young Parisian girl who is being groomed for a career as a grande cocotte, and eventually marries her.

It has been made into several plays and films:

• 1948 French non-musical film
• 1951 Broadway play
• Gigi (1958 movie) - Academy Award winning musical film starring Leslie Caron and Maurice Chevalier
• 1973 - musical comedy play starring Alfred Drake, Daniel Massey, Agnes Moorehead, and Karin Wolfe .

The Broadway version of the play, adapted by Anita Loos, opened on November 24, 1951 starring little known actress Audrey Hepburn playing the lead character (the play ran for six months and led to Hepburn's American film debut in Roman Holiday).

People who go by the name Gigi are:

• Luigino Longo, a Norwegian-Italian socialist activist. He is currently serving jail time in Sweden following a controversial trial in which he was convicted of assaulting the police during the 2001 Gothenburg demonstrations against George W. Bush and the EU.
• Ejigayehu "Gigi" Shibabaw, a contemporary Ethiopian singer.

There is also a doll and some doll series by that name:

• Gigi