Jin Si-ah developed her passion for acting during high school after watching the musical Carmen. She immersed herself in theatre and pursued formal training at Hanyang University’s Department of Theater and Film. Her determination led her to audition for The Witch: Part 2. The Other One, where she was chosen out of over 1,400 candidates, marking her official debut in 2022.
Since then, she has expanded her career with roles in television and film. She appeared in Resident Playbook as Pyo Nam-kyung, an obstetrics and gynecology resident, and has been cast in upcoming projects such as The Old Woman with the Knife, which was invited to the Berlin International Film Festival. With her growing portfolio, Jin Si-ah is establishing herself as a versatile actress in both mainstream and independent productions.