Kingdom is an anime adaptation of a manga series of the same title written and illustrated by Yasuhisa Hara. On December 15, 2019, it was announced that the series will receive a third season along with a new production staff. The season aired from April 6, 2020, to October 18, 2021. On March 30, 2020, Funimation announced that they will stream the third season in U.S., Canada, the U.K., and Ireland. On April 26, 2020, it was announced that after the fourth episode, the remaining episodes of the season would be delayed until further notice due to the effects of the COVID-19 pandemic. On October 5, 2020, it was announced that weekly new episodes would resume April 5, 2021, starting from episode 1. On August 13,2022, Funimation announced at 11:30 am Pacific Time, that the third season of the series would receive an English dub all 26 episodes.
The opening themes are "TOMORROW" and "STACKiNG" by BiSH while the ending themes are "Deep inside" by Waterweed, and "kIng" by Emiko Suzuki.