Park Gyeong-bok (; born October 28, 1993), known professionally as Park Seo-ham (), is a South Korean actor, singer, and rapper. He is a former member of the South Korean boyband KNK. As an actor, he is best known for his role as Jang Jae-young in the web novel-adapted BL drama series Semantic Error.
Career Pre-debut Along with fellow KNK member Inseong, he used to train under Big Hit Entertainment, now known as Big Hit Music where he trained with the members of the boy group BTS. When he moved to JYP Entertainment, he became an actor trainee after he won second place at the company's 10th Open Audition on February 19, 2013.
Before debuting with KNK, he was a backup dancer for the live performances of Bestie's "Zzang Christmas" as well as "I Need You".
2016–2021: Debut with KNK and group departure Park made his official debut as one of the five members of KNK on March 3, 2016, with the name Park Seung-jun (). In 2018, he changed his name to Park Seo-ham. This is his third name following the change of Park Gyeong-bok to Park Seung-jun.
On September 30, 2021, it was announced that he has decided to leave KNK and 220 Entertainment after long discussions with the members regarding the future of his career.
2022–present: Transitioning to acting, Semantic Error and Npio Entertainment On January 12, 2022, Park confirmed as the lead actor in the live series adaption of Semantic Error, based from a popular South Korean BL web novel of the same name. He starred as Jang Jae-young, alongside DKZ member Park Jae-chan as his character's love interest Chu Sang-woo.
On March 7, 2022, Npio Entertainment announced they signed an exclusive contract with Park ahead of his military enlistment. In 2026, he co-starred in TvN's romantic-comedy Our Universe opposite Bae In-hyuk and Roh Jeong-eui.
Personal life Military service On March 4, 2022, Sports Chosun released an interview with Park where they revealed that he would fulfill his mandatory military service as a social worker on March 10. Park completed his military service and was discharged on December 9, 2023.
Filmography Film Year Title Role 2022 Semantic Error: The Movie Jang Jae-young
Television series
Year Title Role Notes 2017 Children of the 20th Century young Anthony 2019 Dating Class Yoon Soo 2021 Dali & Cocky Prince Himself (as KNK member) Cameo (episode 7) 2026 Our Universe Park Yoon-seong See You at Work Tomorrow! Song Min-kyu Special appearance Dive into You Jung Woo-jae
Web series Year Title Role 2019 Just One Bite (Season 2) Joo Woo-kyung 2020 One Fine Week 2 Eden 2022 Semantic Error Jang Jae-young 2025 The Murky Stream Jung Cheon
Television show Year Title Notes 2017 Idol Acting Competition Cast member/contestant 2017–2018 Mix Nine Contestant
Discography OSTs
"Show Musical Dream High OST Part.6" ("My Valentine" with Lee Si Woo) (2025)
Awards and nominations + Name of the award ceremony, year presented, category, nominee of the award, and the result of the nomination Award ceremony Year Category Nominee / Work Result APAN Star Awards 2022 Best New Actor Semantic Error Best Couple Award Park Seo-ham Semantic Error 2023 Popularity Star Award (Actor) Park Seo-ham Global Star Award Blue Dragon Series Awards 2022 Best New Actor Semantic Error Popular Star Award Park Seo-ham Korea Best Brand Awards 2023 Best Drama Actor/Artist Semantic Error Seoul International Drama Awards 2022 Outstanding Korean Actor
Listicles + Name of publisher, year listed, name of listicle, and placement Publisher Year Listicle Placement Forbes 2022 Korea Power Celebrity 40 (Rising Star) Placed
Notes
References
External links
Park Seo-ham at Npio Entertainment