Seo Kang-joon: movies and TV shows
Seo Kang-joon has 34 credits in the archive: 6 films and 28 TV series, from 2009 to 2026. Highest rated: Boyfriend on Demand (8.3/10).
Career timeline
2009 – 2026 · busiest year: 2014 (6 credits)
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Full filmography
| Year | Title | Role | Type | Rating | Age then |
|---|---|---|---|---|---|
| 2026 | Boyfriend on Demand | Seo Eun-ho | TV | 8.3 | 32 |
| 2026 | A Love Other Than Yours | Namgung Ho | TV | — | 32 |
| 2025 | Undercover High School | Jeong Hae-sung | TV | 8.0 | 31 |
| 2022 | Grid | Kim Sae-ha | TV | 7.0 | 28 |
| 2021 | A Year-End Medley | Yi-kang | Film | 7.2 | 27 |
| 2020 | When the Weather Is Fine | Im Eun-seop | TV | 7.3 | 26 |
| 2019 | WATCHER | Kim Young-Koon | TV | 7.9 | 25 |
| 2018 | Busted! | Kang-Joon Seo | TV | 7.8 | 24 |
| 2018 | Are You Human? | Nam Shin / Nam Shin III | TV | 8.1 | 24 |
| 2018 | The Third Charm | On Joon Young | TV | 6.2 | 24 |
| 2017 | Idol Fever | Do Yun's older brother | TV | 1.0 | 23 |
| 2016 | Cheese in the Trap | Baek In-ho | TV | 7.0 | 22 |
| 2016 | Entourage | Cha Young-Bin | TV | 7.7 | 22 |
| 2016 | Entertainer | Lee Sang-Won | TV | 6.6 | 22 |
| 2015 | Hwajung | Hong Joo-won | TV | 4.5 | 21 |
| 2015 | To Be Continued | Ah-rin's elder brother | TV | 5.5 | 21 |
| 2015 | The Beauty Inside | Woo-jin 92 | Film | 7.6 | 21 |
| 2015 | Summer Snow | Sang-gyu | Film | 7.0 | 21 |
| 2014 | Roommate | Self | TV | 8.2 | 20 |
| 2014 | What Happens to My Family? | Yoon Eun-Ho | TV | 7.8 | 20 |
| 2014 | Cunning Single Lady | Gook Seung-hyun | TV | 7.6 | 20 |
| 2014 | The Best Future | Choi Go | TV | 7.4 | 20 |
| 2014 | My Love, My Bride | Joon-soo | Film | 6.9 | 20 |
| 2014 | Bomi's Room | Self | Film | — | 20 |
| 2013 | Home Alone | Self | TV | 7.5 | 19 |
| 2013 | Good Doctor | One of the punks who wants to beat Shi On | TV | 8.0 | 19 |
| 2013 | The Suspicious Housekeeper | Choi Soo Hyuk | TV | 5.0 | 19 |
| 2013 | After School: Lucky or Not | TV | 4.7 | 19 | |
| 2013 | Haneuljae’s Murder | 尹河 | Film | — | 19 |
| 2012 | To the Beautiful You | One of the guys putting ghost makeup on Song Jong Min's group | TV | 6.9 | 18 |
| 2011 | Law of the Jungle | TV | 6.0 | 17 | |
| 2010 | Running Man | TV | 8.2 | 16 | |
| 2010 | KBS Drama Special | TV | 7.4 | 16 | |
| 2009 | Melon Music Awards | Messenger | TV | — | 15 |