Ha Jae-sook is a South Korean actress. She dropped out of Hankuk University of Foreign Studies to pursue an acting career, and made her theater debut in 2000. After several years on stage, she first appeared onscreen in 2006 as a pro-wrestler in Alone in Love. Ha has continued to play supporting roles in television dramas, notably as the heroine's best friend in Protect the Boss, and an overweight wife who undergoes extensive plastic surgery in Birth of a Beauty.