Lee Kyu-hyung began his acting career in the Seoul Metropolitan Police Agency's "Whistle Theater" whilst attending college and completing his mandatory military service. After graduating, he continued to act in theater, as well as appearing in musicals. Lee made his film debut in 2001 with a minor role in the movie
Kick the Moon. He has since starred in various plays and musicals, most notably with recurring roles in
Laundry, Fan Letter, and
Gloomy Day. In 2013, he appeared in the film
The Face Reader after receiving a phone call from a friend that the actor slated to appear had a flat tire and couldn't come to set. Speaking about the character's homosexuality, Lee expressed an awareness of homophobia in Korean society, but stated that he hoped his portrayal of the character could show a simple, human love that audiences could support. In 2019, Lee appeared as the titular character in the
CJ Entertainment production of the musical
Cyrano, alongside musical actors Ryu Jung-han, Choi Jae-woong, and Jo Hyung-gyun. The production was met with praise, and was lauded as an improvement from the 2017 production, due in part to the various charms of its leading actors. In November 2019, Lee reprised his role as the writer Kim Hae-jin in the musical
Fan Letter, a Korean musical set during
Japanese occupation in the 1930s. Lee also played the role of Son Seok-ki in
Doctor John. In 2020, Lee is slated to appear in the film
Stellar, a fantasy comic drama. In 2022, he starred in the South Korean series,
All of Us Are Dead. Lee has played the titular role of Shakespeare in the play
Shakespeare in Love in second half of 2025. ==Filmography==