Kang Hyung-seok (; born January 1, 1992) is a South Korean stage, movie and television actor. He is best known for his role in drama Do Do Sol Sol La La Sol (2020), Hometown Cha-Cha-Cha (2021), Lost (2021) and movie Ajoomma (2022).
After graduating from the Department of Theater and Film, Kang began his professional career on stage. He debuted in 2016 in the play Crazy Romance, followed by the 2018 production Re-meet and the musical Evil Dead. His transition to television occurred in 2019 after a meeting with a casting manager for the tvN drama Crash Landing on You. This meeting led to his television debut as a North Korean soldier in the series.
Throughout 2020, Kang appeared in several minor roles across various networks, including KBS Drama Special, JTBC's Itaewon Class and SBS's Dr. Romantic 2. He secured his first significant supporting role as Ahn Jung-ho in the Netflix and KBS2 simulcast drama Do Do Sol Sol La La Sol. His performance in this series led to an exclusive contract with AM Entertainment.
Kang made his film debut in 2020 with a supporting role as Kim Eui-song in the independent film . Directed by Cho Seung-won, the feature film was based on the director's personal experiences as a KATUSA soldier and received a theatrical release in October 2021.
In 2021, Kang successfully auditioned for the role of Choi Eun-cheol, a police officer at the Gongjin Police Station, in the tvN drama Hometown Cha-Cha-Cha. During the same year, he appeared in the JTBC drama Lost in the role of Jun-hyeok.
In 2022, Kang starred alongside Singaporean actress Hong Huifang in the Korean-Singapore joint film Ajoomma. The film premiered in the "New Currents" competition section of the 27th Busan International Film Festival (BIFF). The film follows the story of a Singaporean housewife who is obsessed with Korean dramas and travels to Korea alone. Kang portrayed Kwon-woo, a Chinese-speaking tour guide struggling with debt and family separation.
In 2023, Kang was appointed as the Public Relations Ambassador for the 3rd ASEAN Film Week. The event was co-hosted by the ASEAN Cultural Center, operated by the Korea Foundation, and the Korea Film Center.