- Name: On Jo
- Real name: Lee Eun Sil (Yi Un Shil)
- Profession: Actress
- Birthdate: 1982-May-25
- Birthplace: South Korea
- Star sign: Gemini
- Family: Twin sister/actress Bi Ryu
Dramas
- First Wives Club (SBS, 2007)
- Sweet 18 (KBS2, 2004)
- Country Princess (MBC, 2003)
Movies
- Take Care of My Cat (2001)