Seol Young-woo

Ulsan HD

Born in Ulsan, Seol played as a youth player for hometown team Ulsan Hyundai (renamed Ulsan HD in 2024) since childhood. After attending university for a while, he played for the senior team of Ulsan Hyundai since 2020. He contributed to Ulsan's two K League 1 titles in 2022 and 2023. On 1 October 2024, he was nominated for the AFC Player of the Year for 2023 by helping his club and national team reach the semi-finals of the 2023–24 AFC Champions League and the 2023 AFC Asian Cup, respectively, in addition to the league title.

Red Star Belgrade

On 29 June 2024, Seol moved to Serbian SuperLiga club Red Star Belgrade for an undisclosed fee on a three-year contract with an option for a one-year extension. He provided three assists in eight league phase matches during his first UEFA Champions League season. For two years, he helped the club win two Doubles, and was selected for the league's Team of the Season twice.

FC Augsburg

On 27 August 2026, Seol signed a four-year contract until June 2030 with Bundesliga side FC Augsburg, becoming the fourth South Korean player in their history after Koo Ja-cheol, Ji Dong-won and Hong Jeong-ho.

2023 Asian Cup

Seol was called up for the South Korea national team for the 2023 AFC Asian Cup. He underachieved in the group stage, and conceded a penalty against Malaysia. He provided an accurate cross, assisting Cho Gue-sung's equalising header in second-half stoppage time of the round of 16 match against Saudi Arabia. He showed tremendous workrate by moving 15.54 km in the quarter-final match against Australia and was selected for the team of the matchday after the match, although he took a rest for only two days after the round of 16. South Korea was eliminated in the semi-finals by Jordan, but found solace in a new full-back.

2026 World Cup

At the 2026 FIFA World Cup, Seol played three Group A matches as a starter for South Korea under manager Hong Myung-bo. He was not seen in the highlights of a 2–1 win over Czech Republic despite attempting the most sprints at the team. He was criticised for making inaccurate passes and crosses and for being frequently ruled offside, when changing his position from right to left wing-back in a 1–0 loss to Mexico. He announced he would take legal action against profanities and insults directed at him just after a 1–0 loss to South Africa.

Seol had played as a winger until his university days, but changed his role to a full-back at the start of his professional career. He is a right-footed full-back, but could be deployed on both left and right flank.

Club

As of 13 September 2026

International

As of match played 24 June 2026