Ryu Jang-ha (; born 1966) is a South Korean film director and screenwriter.
Born in 1966 in Seoul, South Korea, Ryu graduated from Chung-Ang University. He also graduated as the best student from the 12th Korean Academy of Film Arts. In 1998, he worked as assistant to director Hur Jin-ho's debut feature film Christmas in August. He reunited with Hur for his 2001 film One Fine Spring Day, writing the script as well as an assistant director.