Lizzie McGuire is an American comedy television series created by Terri Minsky that premiered on Disney Channel on January 12, 2001. The series stars Hilary Duff as the titular character who learns to navigate the personal and social issues of her teenage years. Duff also voices an animated version of Lizzie that performs soliloquies to express the character's inner thoughts and emotions. The series also stars Lalaine, Adam Lamberg, Jake Thomas, Hallie Todd, and Robert Carradine. The series concluded on February 14, 2004, after a total of 65 episodes were produced. A feature film based on the series, The Lizzie McGuire Movie, was released in 2003.

The series was nominated for two Emmy Awards in 2003 and 2004 for Outstanding Children's Program. The pilot received a nomination at the Writers Guild of America Awards for Best Children's Script. The series also received various awards and nominations at the Nickelodeon Kids' Choice Awards from 2002 to 2005. Television critics acknowledged the innocent nature of the series, and the appeal of the writing towards adolescents.

A revival series was announced in August 2019 to be entering production for Disney+, with Duff reprising her role and Minsky returning as showrunner, but Minsky later departed from the role. Lamberg, Thomas, Todd and Carradine were also attached to return to the series in their original roles. The series began production in association with Disney Channel, but entered a hiatus after Minsky's departure and did not resume; the revival was officially canceled in December 2020.