GIA or Gia may refer to any one of the following:

• Gia (name), a given name (including a list of people with the name)

Gia is a 1998 biographical HBO film about the tragic life and times of one of America's first supermodels, Gia Marie Carangi. The film stars Angelina Jolie as Gia and Faye Dunaway as Wilhelmina Cooper, Mercedes Ruehl, and Elizabeth Mitchell. It was directed by Michael Cristofer and written by Cristofer and Jay McInerney. The original music score was composed by Terence Blanchard.