Shin Jun-seop (Korean:신준섭; born 1998) is a South Korean actor, singer, and rapper. He was a member of the boy group Myteen debuted in 2017. He made his acting debut in 2018, and is best known for his roles in the web series One Fine Week (2019–2020) and television series One: High School Heroes (2025).

Career

2017–present: Debut with Myteen and acting debut

Shin was included as part of the seven members of the boy group Myteen in August 2016. In June 2017, he appeared briefly as a contestant in Mnet's Show Me the Money 6. Before debuting with Myteen, Shin, who is a rapper, released his first mixtape 'SHIN JUN SEOP MIXTAPE #1' through his SoundCloud on July 10, 2017, featuring a total of 4 tracks. He then debuted with the group on July 26, 2017. In November 2017, he joined the JTBC reality competition show Mix Nine.

Shin made his acting debut in JTBC television series Gangnam Beauty (2018) as the younger version of Do Gyeong-seok. He then made his first leading role in the web series Login to You. In 2019, Shin was cast in two web series, Re-Feel and One Fine Week. In 2020, Shin signed an exclusive contract with 51K and was confirmed to star in season 2 of One Fine Week. In 2025, Shin appeared in Wavve series One: High School Heroes as Nam Seung-sik.

Personal life

Military service

On December 14, 2020, Shin enlisted in the 9th Division's White Horse Unit.

Discography

TitleYearPeak chart positionsAlbum
KOR.
"별들은 눈부시고 그대는 따사롭다 (Dazzling Stars & Your Warmth)"2019119One Fine Week OST Part.2
"I Promise"2021122One Fine Week 2 OST Part.1

Filmography

Television series

YearTitleRoleNotesRef.
2018Gangnam BeautyDo Gyeong-seok (young)Acting debut
2020Single & Ready to MingleSpecial appearance
2025One: High School HeroesNam Seung-sik

Web series

YearTitleRoleNotesRef.
2018Login to YouBae Seo-jun
2019Re-FeelGo Tae-geon
2019–2020One Fine WeekHan Jung-wooSeason 1–2

Television shows

YearTitleRoleRef.
2017Show Me the Money 6Contestant
Mix Nine

External links