Kim Hak-sun (Korean: 김학선; born on 24 December 1970) is a South Korean actor. He made his acting debut in 2000 in theaters, since then, he has appeared in number of plays, films and television series. He got recognition for his supporting roles in Fight for My Way (2017), Black Dog: Being A Teacher (2019), Do You Like Brahms? (2020), Voice (2021) and Crazy Love (2022). He has acted in films such as: Vanishing Time: A Boy Who Returned (2016), Winter's Night (2018), Juror 8 (2019) among others.