Gia Cristine Mantegna (born April 17, 1990) is an American actress.
Mantegna was born in New York, New York, and raised in Los Angeles, California, the daughter of Arlene (née Vrhel), who owns the restaurant "Taste Chicago" in Burbank, California, and actor Joe Mantegna. While growing up she was a trained gymnast and ballerina. Gia attended high school at Campbell Hall in North Hollywood, California. She plays piano, saxophone and is a skilled singer. She is of Italian and Czech descent.
Mantegna made her acting debut at age 13 in the 2003 film Uncle Nino, alongside Anne Archer, Trevor Morgan and her father, Joe Mantegna. She later appeared in 13 Going on 30. In 2006, Mantegna portrayed the character of Grace Conrad in Warner Brothers' 2006 winter feature, Unaccompanied Minors. She was cast as one of the main roles in an American television pilot show Murder Book for Fox. She starred in The Neighbor alongside Matthew Modine, Michele Laroque and Ed Quinn.
In 2008, Mantegna made a guest appearance in the Season 3 episode, for television show Criminal Minds, in which her father stars, where she portrayed an abducted teen who witnesses her best friend's death in Chula Vista,