Lee Jae-in

Lee Jae-in is a South Korean actress. She first gained recognition through the mystery film Svaha: [The Sixth Finger]. Other notable works include Racket Boys and Hi-Five.

Career

Lee Jae-in is one of the few South Korean celebrities born in Gangwon, a border province with North Korea. Lee debuted in 2012 as the child counterpart of a supporting character in Ice Adonis.
Her first prominent casting was for 2019 religious mystery film Svaha: The Sixth Finger. Her portrayal of two different twin girls earned her various wins and nominations from major film awards. The same year, Lee also played her first regular role in television series with JTBC's Beautiful World.
In 2021 Lee was cast in JTBC's legal espionage series Undercover and SBS' sport drama Racket Boys as a national youth badminton team's ace athlete. The same year she got praised for her role in the ticking clock-thriller film Hard Hit.
In January 2023, Lee signed with Yooborn Company.
At the age of 21, Lee got nominated for Blue Dragon [Film Award for Best Actress|Best Actress] at the prestigious 2025 46th [Blue Dragon Film Awards] for her role as a young girl with superpowers in the action fantasy Hi-Five, the second-youngest nominee for the category after Jun Ji-hyun in 2001.
In 2026, Lee joined the cast of tvN's slice-of-life romance series Spring Fever.