Ok Ja-yeon

Ok Ja-yeon is a South Korean actress known for intense and intelligent performances. She often plays strong women, from a frightening villain in The Uncanny Counter (2020) to a mysterious hospital director in Big Mouth (2022). Her sharp eyes and calm delivery make her characters hard to read and hard to forget.

Ok Ja-yeon is 170 cm (5 ft 7 in) tall, according to her published profile.

Early life

Ok Ja-yeon was born on December 19, 1988, in Suncheon, South Jeolla Province, South Korea. She studied aesthetics at Seoul National University, a subject about art and beauty, before choosing acting. She is also known for her judo skills, which add power to her screen presence.

Career and breakthrough

She began acting on stage and moved into films with works such as Burning (2018) and Ashfall (2019). Her television breakthrough came with The Uncanny Counter, where she played Baek Hyang-hui, a woman taken over by an evil spirit. The scary and sad performance made many viewers search for her name for the first time.

Popular roles

In Big Mouth, she plays Hyun Joo-hee, the calm director of a hospital with dangerous secrets. In Gyeongseong Creature (2023), she played Na Young-choon in the dark historical story. Each role shows her talent for women who hide their true plans behind a quiet face.

Recent work

She took a key role in the mystery drama Nine Puzzles (2025). Ok Ja-yeon is now one of the most interesting actresses of her age group, trusted with complex and dark characters. Fans love her intelligence on screen and the way she makes even silence feel full of meaning.