Ha Yeon-soo is a South Korean actress. She appeared in the series Monstar alongside Kang Ha-neul, from which she released the singles Monstar, Pt. 3 with Kang Ha-neul and Kim Cho-eun, Monstar, Pt. 1 with BTOB and Yong Jun-hyung, and 사이: 여우비 내리다. She has also appeared in the series Rich Man with Park Sung-hoon and the film Very Ordinary Couple.