Ko Sung-hee
- Birthday: 6/21/1990
- Place of birth: United States
- Fame for: Acting
- Also known as: Go Sung-hee, 고성희, Ko Sung Hee, Go Sung Hee, 高圣熙, 高胜熙, コ・ソンヒ
- Social networks: Instagram
Biography
Ko Sung-hee (Hangul: 고성희; born June 21, 1990) is a South Korean actress. She is best known for her leading roles in Diary of a Night Watchman (2014) and My Holo Love (2020). She has also starred in While You Were Sleeping (2017) and Mother (2018).