Sung Dong-il
Sung in 2015
Born	(1967-04-27) April 27, 1967 (age 57) Incheon, South Korea
Education	Yuhan University (Mechanical Design)
Occupation	Actor
Years active	1987–present
Agent	Star Entertainment
Spouse	Park Kyung-hye ​ (m. 2003)​
Children	3
Korean name
Hangul	성동일
Hanja	成東鎰
Revised Romanization	Seong Dong-il
McCune–Reischauer	Sŏng Dongil

Sung Dong-il (Korean: 성동일; born April 27, 1967) is a South Korean actor. Sung made his acting debut in theater in 1987, then was recruited at the 1991 SBS open talent auditions. He rose to fame as the comic, Jeolla dialect-speaking character "Red Socks" in the television drama Eun-shil, though he later tried to fight typecasting by playing the son of a chaebol tycoon in Love in 3 Colors and a university professor in March. Following years of supporting roles in TV, Sung's film career was jumpstarted by hit romantic comedy 200 Pounds Beauty in 2006. Subsequently, he became one of Korean cinema's most reliable supporting actors, displaying his comic skills and easy charm in films such as Take Off, Foxy Festival, Children..., The Suicide Forecast, and The Client.^[1][2][3][4] He also had major roles in The Suck Up Project: Mr. XXX-Kisser, 3D blockbuster Mr. Go, and mystery-comedy The Accidental Detective.^[5][6][7][8] On the small screen, Sung garnered praise as a villain in The Slave Hunters, and a gruff but caring father in Reply 1997 and its spin-offs Reply 1994 and Reply 1988.^[9]

Sung gained a new surge of popularity in 2013 when he and his son Joon starred in Dad! Where Are We Going?, a reality/variety show featuring five male celebrities and their children on camping missions; his daughter Bin also joined him for the show's second season.^[10][11]