Reen Yu (born October 22, 1987) is a Taiwanese actress and model.
Yu was born Hongyuan Yu on October 22, 1987 in Tûao-yüan hsien, Taiwan.
Yu has studied at Fu Jen Catholic University, department of philosophy. While she attended high school, she appeared in music videos and commercials. In 2009, she took on a small role in the Taiwanese television series Black & White. Her outstanding performance in the series received a good response from netizens.