- Name: 정성환 / Jung Sung Hwan (Jeong Seong Hwan)
- Profession: Actor
- Birthdate: 1974-Jul-22
- Height: 180cm
- Weight: 71kg
- Star sign: Cancer
- Green Coach (SBS, 2009)
- Lobbyist (SBS, 2007)
- 101st Proposal (SBS, 2006)
- That Woman (SBS, 2005)
- Sea God (KBS, 2004)
- Into the Sun (SBS, 2003)
- Romance (MBC, 2002)
- Piano (SBS, 2002)
- Like Father Unlike Son (KBS, 2001)
- Angel in My Heart