Diary of a Wimpy Kid is a 2010 American comedy film directed by Thor Freudenthal and based on Jeff Kinney's 2007 book of the same name. The film stars Zachary Gordon, Robert Capron, Devon Bostick, Rachael Harris, Steve Zahn, and Chloë Grace Moretz.

20th Century Fox released the film theatrically in the United States on March 19, 2010, receiving mixed reviews from critics and grossing $76 million worldwide against a $15 million budget.

The film spawned a film franchise and was followed by three sequels: Rodrick Rules (2011), Dog Days (2012), and The Long Haul (2017). An animated reboot of the same name was released in 2021, which was followed by two sequels of its own: a second adaptation of Rodrick Rules (2022) and Diary of a Wimpy Kid Christmas: Cabin Fever (2023). A book detailing the film's creation process, titled The Wimpy Kid Movie Diary, was released on March 16, 2010.