2018 | 20 Episodes

Season 1 of American Ninja Warrior Junior premiered on October 13, 2018.

2020 | 17 Episodes

Season 2 of American Ninja Warrior Junior premiered on February 22, 2020.

This next generation of American Ninja Warrior marks the first time some of the show’s biggest fans can become part of this five-time Emmy nominated worldwide phenomenon.

Season 3

2021 | 15 Episodes

Season 3 of American Ninja Warrior Junior premiered on September 9, 2021.