Kingdom (Korean: 킹덤) is a South Korean Sageuk series, created and written by Kim Eun-hee, based on the webtoon series The Kingdom of the Gods (신의나라:버닝헬) by Kim Eun-hee and Yang Kyung-il. As Netflix's first original Korean series, it premiered on January 25, 2019. It stars Ju Ji-hoon, Bae Doona, Ryu Seung-ryong, Kim Sang-ho, Kim Sung-kyu, and Kim Hye-jun.

Set at the start of the 17th century, three years after the end of the Imjin War, Kingdom takes place in a fictional, medieval-inspired Joseon (modern-day Korea) and blends political thriller and elements from zombie horror. The story follows Lee Chang, the Crown Prince of Joseon, who attempts to investigate the mysterious illness recently afflicting the King, only to find himself caught in the middle of a deadly epidemic ravaging the kingdom. While trying to save the Kingdom from the plague, he must also stop his political opponents from seizing the throne.

The series was positively reviewed, and renewed for a second season which was released on March 13, 2020. A special feature-length episode of the series, titled "Ashin of the North", was released on July 23, 2021, presenting a focus on the supporting character played by Jun Ji-hyun. The episode acts as a sidequel to the second season of Kingdom and explores the backstory of Ashin, the mysterious character Lee Chang's group encountered on their journey north to discover the origins of the infected.