All That is an American sketch comedy children's television series created by Brian Robbins and Mike Tollin. The series originally aired on Nickelodeon from April 16, 1994, to October 22, 2005, lasting ten seasons, and was produced by Tollin/Robbins Productions and by Schneider's Bakery in season ten. The pilot episode was originally shown as a special "sneak peek" on April 16, 1994, with the show officially debuting as a regular series on January 21, 1995.

The series features original short comedic sketches and weekly musical guests aimed toward a young audience. Its sketches parody popular culture and are performed by a large and varying cast of child and teen actors. Early episodes were taped at Nickelodeon Studios at Universal Orlando Resort and then moved to Hollywood at the Nickelodeon on Sunset theatre, where other Nickelodeon shows such as The Amanda Show, Kenan & Kel, and Drake & Josh were taped.

All That went on to become a fixture on Nickelodeon for over a decade and has received acclaim for its diverse cast and impact on children's television. The series has spun off several members of the cast in their own Nickelodeon television series with varying levels of success. It has been marketed in several ways, including an audio recording, books, a feature film (with a sequel), festival tour, and numerous reunions and specials celebrating the legacy of All That.

In 2019, Robbins, the current president of Nickelodeon and co-creator of the original series, announced a revival of the series with original cast member Kenan Thompson serving as executive producer, with Kel Mitchell later confirmed in the same role. The eleventh season premiered on June 15, 2019, with musical guests The Jonas Brothers. Original cast members Lori Beth Denberg and Josh Server each appeared, and made sporadic appearances throughout the season. The last episode of the series aired on December 17, 2020, after production was suspended due to the COVID-19 pandemic.