* Hilary Duff as Lizzie McGuire
* Adam Lamberg as Gordo
* Jake Thomas as Matt McGuire
* Hallie Todd as Jo McGuire
* Robert Carradine as Sam McGuire
* Clayton Snyder as Paolo
* Yani Gellman as Isabella
* Daniel Franzese as Ethan Craft
* Ashlie Brillault as Miranda Sanchez
* Lalaine as Miranda Sanchez
* Taran Killam as Mr. Dig
* Christian Kane as the Italian waiter
* Heather Marie Matarazzo as Kate Sanders (credited as Heather Matarazzo)
This list includes the main cast members. There are many other supporting actors and actresses that appear in the movie.