OS
Ong Seong-wu Filmography
| 2023 | Strong Girl Nam-soon (TV Series) · as Kang Hee-Sik |
| 2022 | 20th Century Girl · as Joseph / Poong Joon-Ho |
| 2022 | Life Is Beautiful · as Park Jeong-Woo |
| 2022 | Seoul Vibe · as Joon-Gi |
| 2021 | Would You Like a Cup of Coffee? (TV Series) · as Kang Go-Bi |
| 2020 | More Than Friends (TV Series) · as Lee Soo |
| 2019 | At Eighteen (TV Series) · as Choi Joon-Woo |
| 2016 | Produce 101 (TV Series) · as Contestant |
| 2011 | Law of the Jungle (TV Series) |
| 2010 | Running Man (TV Series) |
| 2005 | Show! Music Core (TV Series) · as Host |
| 2025 | BOYS PLANET (TV Series) · as Self - Host |
| 2019 | Traveler (2019) (TV Series) · as Himself |
| 2018 | fromis_'s Room (TV Series) · as Himself |
| 2018 | Amazing Saturday (TV Series) · as Self |
| 2017 | Master Key (TV Series) · as Self |
| 2017 | Wanna City (TV Series) · as Self |
| 2017 | Wanna One Go (TV Series) · as Self |
| 2015 | Men on a Mission (TV Series) · as Self |
| 2011 | Saturday Night Live Korea (TV Series) · as Himself |
| 2009 | You Hee-yeol's Sketchbook (TV Series) · as Self |
| 2007 | Radio Star (TV Series) · as Self - Guest |
| 2004 | M COUNTDOWN (TV Series) · as Self |
| 1998 | Music Bank (TV Series) · as Self - Performer |