Ong Seong-wu Biography: Height, Parents, Age, Net Worth, Siblings, Songs, Movies, Awards, Girlfriend
Ong Seong-wu is a multifaceted South Korean singer, actor, and former member of the boy group Wanna One.
Rising to fame through his fifth-place finish on Produce 101 Season 2 (2017), he has since established himself as a solo artist and acclaimed actor.
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Known for his charismatic performances in dramas like At Eighteen and films such as Life Is Beautiful, Ong blends vocal talent, dance prowess, and acting versatility, captivating audiences worldwide.

Profile
- Full Name: Ong Seong-wu
- Stage Name: Ong Seong-wu
- Born: August 25, 1995
- Age: 30 years old
- Birthplace: Incheon, South Korea
- Nationality: South Korean
- Occupation: Singer, Actor
- Height: 179 cm
- Religion: Protestantism (Methodist)
- Parents: Mr. and Mrs. Ong
- Siblings: Ong Seong-eun (older sister)
- Spouse: None
- Children: None
- Relationship: Single
- Net Worth: $1 million to $3 million
Early Life and Education
Ong Seong-wu was born on August 25, 1995, in Incheon, South Korea, to Mr. and Mrs. Ong. Raised in a supportive Methodist family, he grew up alongside his older sister, Ong Seong-eun (born 1992), a musical theater major who has contributed to drama OSTs. His ethnicity is Korean.
Ong attended Sangincheon Elementary School and Guwol Middle School in Incheon before enrolling at Hanlim Multi Art School in Seoul, graduating in 2014 with a focus on dance.
He later majored in acting at Dong Seoul University, nurturing his passion for performance. Encouraged by his mother, he learned to play the drums, which sparked his early interest in music.

Career
Ong’s career began in 2008 when he was scouted by Lion Media for his drumming skills at a band contest. After training with Fantagio from 2016, he gained prominence on Produce 101 Season 2 (2017), securing a spot in Wanna One. The group debuted with hits like Energetic and disbanded in 2019.
Ong debuted as a solo artist with the EP Layers (2020) and released singles like Gravity. His acting career flourished with lead roles in At Eighteen (2019), More Than Friends (2020), and films Life Is Beautiful (2022) and 20th Century Girl (2022). Recent projects include Seoul Vibe (2022) and Starlight Is Falling (2024).
Awards & Nominations
- Asia Artist Awards (2017): Popularity Award (as part of Wanna One)
- Seoul Music Awards (2018): New Artist Award (as part of Wanna One)
- KBS Drama Awards (2019): Best New Actor for At Eighteen
Social Media
- Instagram handle: @osw_onge

Personal Life
Ong Seong-wu, 30, stands at 179 cm and is single with no spouse or children. He maintains a private personal life, though he is known to enjoy relaxing on his sofa and using spicy-scented candles to unwind.
A close friend of ASTRO’s JinJin from their Hanlim school days, Ong values his connections and once impulsively booked a flight to Jeju to join a friend. His sobriety journey reflects his resilience, as he has overcome past challenges with determination.
Net Worth
Ong Seong-wu’s estimated net worth ranges from $1 million to $3 million, derived from his music, acting roles, endorsements, and appearances.
Discography
Selected Discography:
- Layers (2020) – Solo EP
- Gravity (2020) – Single
- We Belong (2020) – Single
Selected Filmography:
- Life Is Beautiful (2022) – Kang Si-wol
- 20th Century Girl (2022) – Poong Woon-ho
- Seoul Vibe (2022) – Joon-gi
- Starlight Is Falling (2024) – Supporting role
Selected Television:
- At Eighteen (2019) – Choi Jun-woo
- More Than Friends (2020) – Lee Soo
- Strong Girl Nam-soon (2023) – Kang Hee-sik
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