Shin Eun-soo (신은수, born October 23, 2002) is a South Korean actress. She made her acting debut in 2016 by winning the lead role alongside Gang Dong-won in the fantasy feature film Vanishing Time: A Boy Who Returned out of more than 300 auditionees. Her television and film credits include playing the younger version of Jun Ji-hyun in The Legend of the Blue Sea (2016), Bad Papa (2018)—for which she won the MBC Drama Award for Best Young Actress—Homme Fatale (2019), Do Do Sol Sol La La Sol (2020), and The Good Detective 2 (2022). She earned critical acclaim for her performance as the deaf student Yoon Chung-ah in the youth drama Twinkling Watermelon (2023) and starred in the Netflix retro romance film Love Untangled (2025).

Filmography

• 2026Project 30
• 2025Love Untangled — Park Se-ri
• Hey, Come Here
• Light Shop — Joo Hyeon-ju
• 2023Tastes of Horror — Yoo-kyung (segment "Four Legged Beast")
• Twinkling Watermelon — Yoon Chung-ah
• A Model Family — Park Yeon-woo
• Bloody Heart — Yoo Jeong [Young]
• 2022Nineteen Otters — Kim Jae Young
• Summer Strike — Kim Bom
• 2020Baby It's Over Outside
• Do Do Sol Sol La La Sol — Jin Ha-Young
• House on Wheels
• SF8 — Hye-hwa
• 2019Homme Fatale — Sook-jung
• Bad Papa — Yoo Young-Sun
• 2018Illang: The Wolf Brigade — Little Red Riding Hood
• 2018문집 — Shin S- Yi
• 2017Chang-ok's Letter — Hye-jung
• Chang-ok's Letter — Hye-jung
• Drama Stage — Shin So Yi
• Magic School — Han Yi-Seul
• 2017The Shower — Girl (voice)
• The Legend of the Blue Sea — Young Se-hwa
• 2016Vanishing Time: A Boy Who Returned — Su-rin
• KBS Drama Special — Kim Jae-young
• 협반 — Lee Ru-ri

Appearances as themselves (1)

• Here for Promo — Self