Seo Ji-hye

Seo Ji-hye (서지혜, born July 17, 1996, Seoul) is a South Korean actress and model under 51K. She studied Computer Engineering at Ewha Womans University before entering entertainment through the reality series Heart Signal (2017), which built her early public profile. She made her drama debut with MBC's Gangnam Beauty (2018) as Noh Min-a, the first step in a trajectory that has steadily expanded from supporting roles to full leading performances.

Her range developed quickly through Mystic Pop-up Bar (2020), Love All Play (2021) as a badminton player Lee Yoo-mi, and the thriller Crime Puzzle (2022). She earned significant critical recognition for My Perfect Stranger (KBS2, 2023), where she played Lee Soon-ae, a 1987-era character in a time-travel romance. The role won her Best New Actress at the 2023 KBS Drama Awards.

In 2024, she broke through to a wide mainstream audience as Park Dal in Family by Choice (JTBC), a family drama that became a fan favorite for its warmth and ensemble chemistry. In 2025, she signed exclusively with 51K following years with Just Entertainment. She is set to expand her dramatic range in the 2026 ENA thriller series The Scarecrow, playing Kang Soon-yeong alongside Park Hae-soo, the lead of Squid Game.