LazyTown (Icelandic: Latibær; Icelandic pronunciation: [ˈlatʰiˌpaiːr̥]) is an Icelandic children's sitcom musical television series created by aerobics champion Magnús Scheving, who portrays the character Sportacus. Originally produced in English, it has been broadcast in dozens of languages globally. Designed to encourage healthy lifestyles, the series was based on Scheving's stage play Áfram Latibær!, itself adapted from a book that Scheving wrote in 1995.

The series was originally commissioned by Nickelodeon in early 2003, following the production of two stage plays and a test pilot. Originally performed in American English, it was later dubbed into thirty different languages and broadcast in over 180 countries around the world. It combines live action, puppetry and computer animation, making it one of the most expensive children's shows, with the cost per episode being over five times that of the average children's show.

The first two seasons, consisting of fifty-two episodes, were produced from 2004 to 2007. LazyTown originally aired on Nickelodeon's Nick Jr. block in the United States and the United Kingdom and RÚV in Iceland. In 2011, Turner Broadcasting System Europe acquired LazyTown Entertainment and commissioned the third and fourth seasons. Consisting of twenty-six episodes, they premiered in 2013 on Turner's Cartoonito and later on Viacom's Channel 5, for a total of seventy-eight episodes and four seasons. LazyTown was also aired in the United States on the NBCU-owned PBS Kids Sprout channel after it acquired the rights to the show.

Various spin-offs were created, including stage productions and LazyTown Extra, a short-form series for younger children.

The series focuses on a town called LazyTown, where the residents spend most of their time being inactive and unmotivated. With help from hero Sportacus and newcomer Stephanie, they learn how to become more active and lead healthier lifestyles. They are opposed by the vicious rival Robbie Rotten, who prefers to lead a sluggish life and devises schemes to make LazyTown lazy. However, his plans, which, ironically, involve him becoming physically active, are never foolproof and always end in failure.

Each of the children that Stephanie befriends embodies negative traits. Ziggy has an unbalanced diet with a lack of fruits and vegetables, Pixel is very reclusive and spends too much time on his computer, Stingy is self-centered, selfish and possessive, and Trixie is an ungirly troublemaker with little respect for rules and other people. As the series progresses, the characters become less lazy in favor of a healthier lifestyle.

The program features a predominantly Eurodance soundtrack. Each episode features at least one original song and concludes with a performance of "Bing Bang", sung by Stephanie. Many tracks are reworked versions of songs from the original Icelandic plays.

Fifty-two episodes were produced for the first two seasons of LazyTown between 2004 until 2007, with a further 26 produced between 2013 until 2014.