Lee Se-hee (born December 22, 1991), is a South Korean actress. She made her acting debut in 2015 with a music video "364 Days of Dream", since then, she has appeared in number of films and television series. She got recognition for portraying role of Park Dan-dan in weekend TV series Young Lady and Gentleman (2021–2022) for which she won the best new actress award at 2021 KBS Drama Awards. She has acted in films as: Midnight Runners (2017) and Midnight (2021) among others. In 2020 she appeared in JTBC TV series Live On. In 2022 she won the "Popularity Award (Actress)" at 2022 KBS Drama Awards for her performance in the series Bad Prosecutor.