Choi Yun-ju (최윤주), known simply as Yun Ju (윤주) and formerly as Seo Yun Ju (서윤주), is a South Korean singer signed to Pocket7 Entertainment since 2024. She debuted with the girl group MIMIIROSE on September 16, 2022, with the single album "AWESOME" and has been an active member of the group ever since. In 2021, she was a contestant on the survival show "My Teenage Girl".
