Shin Jun-seop (; 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 Title Year Peak chart positions Album KOR.Peak positions on the Circle Digital Chart:
"별들은 눈부시고 그대는 따사롭다 (Dazzling Stars & Your Warmth)" "I Promise" "별들은 눈부시고 그대는 따사롭다 (Dazzling Stars & Your Warmth)" 2019 119 One Fine Week OST Part.2 "I Promise" 2021 122 One Fine Week 2 OST Part.1
Filmography Television series Year Title Role Notes 2018 Gangnam Beauty Do Gyeong-seok (young) Acting debut 2020 Single & Ready to Mingle Special appearance 2025 One: High School Heroes Nam Seung-sik
Web series Year Title Role Notes 2018 Login to You Bae Seo-jun 2019 Re-Feel Go Tae-geon 2019–2020 One Fine Week Han Jung-woo Season 1–2
Television shows Year Title Role 2017 Show Me the Money 6 Contestant Mix Nine
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