Yu Oh-seong (bahasa Korea: 유오성) (lahir 11 September 1966), juga dieja sebagai "Yu Oh-Sung" atau "Yoo Oh-Sung" adalah aktor asal Korea Selatan.
- Don't Cry, Mommy (2012)
- Champ (2011) - Trainer Yoon
- Happy Murderer (2010) - Young-Suk
- Potato Symphony (2008)
- Lump of Sugar (2006)
- Doma Ahn Jung-geun (2004) - Ahn Jung-geun
- The Star (2003) - Yeong-woo
- Champion (2002) - Kim Deuk-gu
- Friend (2001) - Lee Jeong-suk
- Attack the Gas Station! (1999) - Mu Dae-po (a.k.a. Bulldozer)
- The Spy (1999) - Li Cheol-jin
- Spring in My Hometown (1998) - Sungmin's uncle
- Saturday, 2:00 pm (1998) - Dal-su
- Beat (1997) - Tae Soo
- Poison (1997)
- Kill the Love (1996) - Baek Joon
- Man (1995)
- Terrorist (1995)
- Dr. Bong (1995)
- I Wish for What Is Forbidden to Me (1994)
- Love, Love: The Stories of Han Hie-jak (1991)
- Faith (SBS / 2012) - Ki Cheol
- Missing Case of National Assembly Member Jung Chi-Sung (KBS2 / 2012) - Jung Chi-Sung
- Kim Su-Ro, The Iron King (MBC / 2010) - Shin Kwi-Gan
- Swallow the Sun (SBS / 2009) - Lee Jackson
- Dear Lover (SBS / 2007)
- Invisible Man Choi Jang Soo (KBS / 2006)
- Like It Hot (MBC / 2000)
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