- Full name: Kim Yewon
- Date of Birth: August 19, 1998
- Nationality: Korean
- Blood type: O
- Group: GFriend
- Agency: Source Music Entertainment
- Debut: 2015
- Position in the group: sub vocalist
- Family members: Mom, dad, older sister, older brother, Umj
- Nickname: ‘Yewoni’,’Um21′, and ‘Omuji’
- Her dad is a dentist
- Due to her leg injury in 2016, she took time off
