Ong Seong-Wu: Biography, Career, and Filmography

Ong Seong-Wu (Hangul: 옹성우) is a South Korean singer and actor born on August 25, 1995. He first gained widespread public recognition as a member of the temporary project boy band Wanna One, formed through the survival reality competition show Produce 101 Season 2.

Portrait photograph of Ong Seong-Wu — Ong Seong-Wu

Music Career

Before transitioning heavily into acting, Ong established his career in the South Korean entertainment industry as a pop music idol. He rose to prominence as a member of the boy band Wanna One, participating in the group's albums, tours, and broadcast appearances until the conclusion of their scheduled group activities.

Acting Career

Following his music activities, Ong transitioned into television and film acting, taking on various leading and supporting roles.

Television Series

At Eighteen (JTBC, 2019) - Choi Joon-Woo
More Than Friends (JTBC, 2020) - Lee Soo
Would You Like a Cup of Coffee? (KakaoTV, 2021) - Kang Ko-Bi
Strong Girl Nam-Soon (JTBC, 2023) - Kang Hee-Sik
Boyfriend on Demand (Netflix, 2026) - Bae Hyeon-Woo (ep. 4)
Spooky in Love (tvN, 2026) - Kang Min-Hwan

Films

Seoul Vibe (2022) - Joon-Gi
Life is Beautiful (2022) - Park Jung-Woo
20th Century Girl (2022) - Joseph
Starlight Is Falling (2022) - Choi Kyung-Soo

TV Movies

Love Track: When We Were Wired (KBS2, 2025) - Ki Hyun-Ha

Awards

In 2022, Ong received the New Wave Award at the 58th Daejong Film Awards held on December 9, 2022, recognizing his performance in the film Life is Beautiful.