Lee Seo-jin Filmography
| 2024 | High School Return Of A Gangster (TV Series) · as Kim Deuk-Pal |
| 2024 | Whenever Possible (TV Series) |
| 2022 | Behind Every Star (TV Series) · as Ma Tae-Oh |
| 2022 | Dr. Park's Clinic (TV Series) · as Park Won-Jang |
| 2021 | Times (2021) (TV Series) · as Lee Jin-Woo |
| 2019 | Trap (TV Series) · as Kang Woo-Hyun |
| 2018 | Intimate Strangers · as Joon-Mo |
| 2016 | 어서옵SHOW (TV Series) |
| 2016 | Marriage Contract (TV Series) · as Han Ji-Hoon |
| 2015 | Love Forecast · as Lee Dong-Jin |
| 2014 | Wonderful Days (TV Series) · as Kang Dong Suk |
| 2011 | Gye Baek: Warrior's Fate (TV Series) · as Gyebaek |
| 2010 | Running Man (TV Series) |
| 2009 | Soul (TV Series) · as Shin Ryu |
| 2007 | Lee San: Wind of the Palace (TV Series) · as Yi San |
| 2006 | Lovers (TV Series) · as Ha Kang-Jae |
| 2006 | Freeze (TV Series) · as Baek Joong-Won |
| 2005 | Shadowless Sword · as Dae Jung-Hyun |
| 2004 | Phoenix (2004) (TV Series) · as Jang Sae-Hoon |
| 2003 | Damo (TV Series) · as Commander Hwangbo |
| 2002 | Shooting the Star (TV Series) · as Do-Hoon |
| 2000 | Terror Taxi · as Gilnam |
| 2025 | MY GRUMPY SECRETARY - THE ASSISTANTS (TV Series) · as Self |
| 2023 | God of Communication (TV Series) · as Self |
| 2023 | Jinny's Kitchen (TV Series) · as Self |
| 2021 | Fifteen Nights on a Business Trip (TV Series) · as Self |
| 2021 | Youn's Stay (TV Series) · as Self |
| 2019 | Little Forest (TV Series) · as Himself |
| 2018 | You Quiz On The Block (TV Series) · as Self |
| 2017 | Master In The House (TV Series) · as Himself |
| 2017 | Youn's Kitchen (TV Series) · as Self |
| 2015 | Three Meals a Day: Fishing Village (TV Series) · as Self |
| 2014 | Three Meals a Day (TV Series) · as Self |
| 2013 | Grandpas Over Flowers (TV Series) · as Self |
| 2013 | I Live Alone (TV Series) · as Self |
| 2008 | On Air (2008) (TV Series) · as Himself |
| 2005 | Infinite Challenge (TV Series) · as Self |