American Ninja Warrior Junior is an American sports competition reality show on Universal Kids that premiered in 2018. It is the children's edition of American Ninja Warrior and American Ninja Warrior: Ninja vs. Ninja, which themselves are based on the Japanese game show Sasuke. As with the rest of the franchise, the series is produced by A. Smith & Co. In May 2021, it was announced that the third season would be moving to Peacock. The show planned to return for a fourth season in February 2023, but after a series of delays, an actual date is not yet confirmed.