United States of Tara is an American comedy drama television series created by Diablo Cody, which aired on Showtime from 2009 to 2011. The series follows the life of Tara (Toni Collette), a suburban artist and mother coping with dissociative identity disorder.

The series was based on an idea by Steven Spielberg, who is the executive producer, under his DreamWorks Television label. Other executive producers include writers Darryl Frank, Justin Falvey, director Craig Zisk, and showrunners Cody and Joey Soloway. Former executive producer Alexa Junge quit as showrunner after the first season.

Principal photography took place in Los Angeles, California, while the show is set in Overland Park, Kansas. Collette won the 2009 Primetime Emmy Award and 2010 Golden Globe Award for Best Actress in a Comedy Series for her role; the opening title sequence also won an Emmy. The show's third and final season premiered on March 28, 2011.

On May 23, 2011, Showtime announced that the series would not be renewed for a fourth season, and the series finale aired on June 20, 2011.