River Where the Moon Rises (Korean: 달이 뜨는 강) is a 2021 South Korean television series starring Kim So-hyun, Na In-woo, Lee Ji-hoon and Choi Yu-hwa. Based on the 2010 novel Princess Pyeonggang by film director and screenwriter Choi Sagyu, it aired on KBS2 from February 15 to April 20, 2021, every Monday and Tuesday at 21:30 (KST). The series is available on Viu with multi-language subtitles. The series was submitted for the 2021 International Emmy Awards.

Originally, cast as On Dal, Ji Soo was replaced after allegations of bullying and sexual abuse sparked a scandal. Six episodes had already aired; the remaining 14 were reshot with new lead Na In-woo. On March 24, 2021, it was reported that there was a plan to re-film the first six episodes of the show as well, since the original versions with Kim Ji Soo had been taken down. The decision was also influenced by the positive reception to Na In-woo's acting and chemistry with female lead Kim So-hyun despite the circumstances of his casting. Both Kim and Na was nominated in the 57th Baeksang Arts Awards for their performance in the drama, with Kim being the youngest nominee for the Best Actress—Television category in the award's history.