|Education||Chung-Ang University - Media, Performing Arts, and Imaging Sciences|
|Revised Romanization||Baek Seong-hyeon|
Baek Sung-hyun made his acting debut in the 1994 film I Wish for What Is Forbidden to Me when he was five years old. The child actor practically grew up onscreen, playing the roles of an adorable son in several MBC series including See and See Again in 1998 and Ajumma (also known as Housewife's Rebellion) in 2000. As he entered his teenage years, he played the younger versions of male protagonists in dramas such as Damo (2003), Emperor of the Sea (2004) and Stairway to Heaven (2003) — the last his breakout role. Critics praised his acting that seemed more mature and romantic for his age.
Director Lee Joon-ik had previously wanted to cast Baek in his films King and the Clown and The Happy Life; he finally got to work with Lee in Blades of Blood (2010). Lee said he cast Baek as the character Gyun-ja who stands between the two main leads Hwang Jung-min and Cha Seung-won for he was "the only actor who can act as much as he can at such a young age," attesting to Baek's strong acting fundamentals.
He has since starred in a number of other films and TV series — sitcom Kokkiri (Elephant) (2008), high school comedy Our School's E.T. (2008), romantic comedy The Accidental Couple (2009), and period drama Insu, The Queen Mother (2011).
Of note is Baek's performance as a young marathoner in the four-episode Running, Gu (2010), his acting calm and gravitas in the eight-episode drama special White Christmas (2011), and his leading man turn in the youthful romance Melody of Love (2013).
|1995||Blowing of the Wind||KBS1|
|1998||See and See Again||Seon-nam|
|2000||The Full Sun||Jang Ho-tae||KBS2|
|Golden Era||Jo Sang-man|
|2001||Beautiful Days||Lee Min-chul (young)||SBS|
|2002||Five Brothers and Sisters||Han Woo-sik (young)||SBS|
|Man of the Sun, Lee Je-ma||Lee Je-ma (young)||KBS2|
|Trio||Park Jun-ki (young)||MBC|
|2003||Damo||Hwangbo Yoon (young)|
|Stairway to Heaven||Cha Song-joo (young)||SBS|
|2004||The Age of Heroes||Chun Tae-san (young)||MBC|
|Emperor of the Sea||Jang Bogo (young)||KBS2|
|2007||Kid Gang||Oh Han-pyo||OCN|
|2008||Kokkiri (Elephant)||Joo Sung-hyun||MBC|
|2009||The Accidental Couple||Han Sang-chul||KBS2|
|2010||Running, Gu||Gu Dae-gu||MBC|
|2011||White Christmas||Park Mu-yeol||KBS2|
|Insu, The Queen Mother||Crown Prince Uigyeong / King Seongjong||jTBC|
|2013||Iris II: New Generation||Kang Byung-jin|
|Adolescence Medley||Choi Jung-woo (adult)|
|Melody of Love||Park Hyun-woo||KBS1|
|2014||Cheo Yong||Jang Dae-seok (ep.1,9-10)||OCN|
|2015||This is My Love||Park Hyun-soo (27 years old)||jTBC|
|Splendid Politics||Crown Prince Sohyeon||MBC|
|Drama Special "Live Shock"||Eun-beom||KBS|
|2016||The Doctors||Pi Yeong-gook||SBS|
|While You Were Sleeping||Do Ha-kyung (Ep 13-14)||SBS|
|1994||I Wish for What Is Forbidden to Me||Baek Joon|
|1998||Scent of a Man||Kwon Hyuk-soo|
|2001||Kiss Me Much||Lee Ji-oh|
|2008||Our School's E.T.||Baek Jung-goo|
|2009||Sydney in Love (short film)|
|2010||Blades of Blood||Kyeon-ja|
|2016||Bittersweet Brew||Park Sung-du|
|2014||Love Cells||Chun Ji-woon||Naver TV Cast|
|Dreaming Executive||Oh Joong-gi||Naver TV Cast|
|2016||Ready for Start||Kim Byung-chul||Naver TV Cast|
|Momin's Room||Hyun Woo||OCN|
|2010||Star Donation Project:
Baek Sung-hyun's Hope T-shirt
|2012||Invincible Youth 2||KBS2|
|2013||World Challenge - Here We Go||SBS|
|2016||Neighbourhood's Private Life||tvN|
|2016||Procedure of Love||Jeong Juho|
|Romantic Muscle||Kang Junsu|
|2017||Josee, The Tiger And The Fish||Tsuneo|
Awards and nominations
|2007||9th Mnet KM Music Festival||Best Music Video Acting||Goodbye Sadness||Won|
|2008||2nd Mnet 20's Choice Awards||Hot Sitcom Star||Kokkiri||Won|
|2013||KBS Drama Awards||Best New Actor||Iris II, Melody of Love||Nominated|
- Choi, Ji-Eun (6 April 2011). "Actor Baek Sung-hyun's Song Picks". 10Asia. Retrieved 2012-11-19.
- Lee, Ji-Hye (20 April 2010). "Traces of Lee Jun-ik's work in Blades of Blood". 10Asia. Retrieved 2012-11-19.
- Hong, Lucia (26 October 2011). "Baek Sung-hyun cast in historical drama". 10Asia. Retrieved 2012-11-19.
- Wee, Geun-woo (27 April 2010). "My Name Is: Baek Sung-hyun". 10Asia. Retrieved 2012-11-19.
- Kwon, Mee-yoo (25 January 2011). "Eight chilling days of White Christmas". The Korea Times. Retrieved 2012-11-19.
- Choi, Ji-Eun (11 March 2011). "On the set of KBS TV series White Christmas". 10Asia. Retrieved 2012-11-19.
- Kim, Ju-ae (23 November 2017). "[공식입장] 싸이더스 측 "백성현, 1월 2일 입대…해양경찰 복무"". Xports News. Retrieved 2012-11-19.
- Son, Bo-kyung (21 June 2013). "Baek Sung Hyun Practices for Play Uncle Sooni". enewsWorld. Retrieved 2013-06-21.