2009–2012: Beginnings Kim wanted to pursue a modeling career since he was a high school student. He debuted as a runway model in 2009 at the age of 20 and began appearing in
prêt-à-porter and
Seoul Fashion Week collections. As his modeling career progressed, he started doing commercial films and began studying acting, under the guidance of acting coach Moon Won-joo. Kim fell in love with acting, saying, "I found myself feeling the same thrill and enthusiasm that I felt the first time I came to walk on the runway". Under the
stage name Kim Woo-bin, he made his acting debut in 2011, starring in the mystery drama
White Christmas and the low-rated cable
sitcom Vampire Idol. In 2012, he had a supporting role in the romantic comedy drama ''
A Gentleman's Dignity, written by famed screenwriter Kim Eun-sook. Next came a two-episode guest appearance in drama adaptation of the popular manga To the Beautiful You''.
2013: Rising popularity movie premiere in 2013 Kim's breakout year came in 2013 with two hit dramas and one film. From late December to early 2013, he starred in the teen drama
School 2013. He received his first acting award for the role at the 2nd
APAN Star Awards under the category Best New Actor. The same year, he was cast in Kim Eun-sook's teen drama
The Heirs, which became popular domestically and internationally with a peak audience rating of 28.6% and 1 million hits on the Chinese streaming website
iQiyi. Kim experienced a surge in popularity overseas. This led to increased advertising contracts and acting offers for the actor. Kim then appeared in his first major film role in
Friend: The Great Legacy, the blockbuster sequel to
Kwak Kyung-taek's
2001 box office hit. He received positive reviews for his portrayal as a young gang member. The same year he became the host of cable music program
M! Countdown from August 15, 2013, to February 13, 2014.
2014–2017: Success in film and hiatus After his rise in popularity in 2013, Kim continued appearing in big screen projects. In January 2014, he was cast in the
heist movie The Con Artists, in which he played a top
safe-cracker alongside rising star
Lee Hyun-woo. He then took on a comedic character in
indie director Lee Byung-heon's sophomore effort
Twenty in 2015
. Kim then appeared in an ad campaign for
Calvin Klein Watches + Jewelry, making him the first East Asian model for the brand. at the
Uncontrollably Fond press conference in 2016 In 2015, Kim was cast in his first television leading role in the melodrama
Uncontrollably Fond, written by screenwriter
Lee Kyung-hee. The drama premiered on July 6, 2016. He then starred in crime action film
Master alongside
Lee Byung-hun and
Kang Dong-won. The movie premiered in December 2016 and became the 11th bestselling film for 2016 in South Korea. In 2017, Kim was cast in crime caper film
Wiretap by
Choi Dong-hoon. The project has since been suspended to allow Kim to seek treatment for cancer.
2020–present: Return to screen On March 11, 2020, AM Entertainment announced that Kim would be returning to the big screen in
Choi Dong-hoon's upcoming sci-fi film
Alienoid alongside
Ryu Jun-yeol and
Kim Tae-ri. The film premiered in July 2022 and Kim played the role of 'Guard', a person in charge of managing alien prisoners. Also in 2022, Kim co-starred in acclaimed screenwriter
Noh Hee-kyung's television series
Our Blues, and in
Netflix original series
Black Knight. In 2025, Kim starred in the Netflix
fantasy romantic comedy series
Genie, Make a Wish written
Kim Eun-sook and directed by
Lee Byeong-heon. This is his second pairing with
Suzy after
Uncontrollably Fond in 2016. He played spirit of a lamp that awakens after a thousand years. == Personal life ==