Seo Jeong-yeon

Seo Jeong-yeon is a South Korean actress loved for her warm and funny supporting roles. She often plays nurses, mothers, secretaries and loyal friends, and she makes small parts feel important. Many viewers know her face from Descendants of the Sun (2016) and My Demon (2023), two of the biggest dramas of their years.

Seo Jeong-yeon is 165 cm (5 ft 5 in) tall, according to her published profile.

Early life

Seo Jeong-yeon was born on September 23, 1975, in Yeoju, Gyeonggi Province, South Korea. She studied at the Korea National University of Arts and trained as a theatre actor. The stage taught her the natural, honest acting style she still uses today.

Career and breakthrough

She made her stage debut in 1996 and her film debut in 2001. For years she worked mainly in theatre and film before moving into television around 2011. Her breakthrough with TV audiences came as Nurse Ha Ja-ae in Descendants of the Sun (2016), where her kind and cheerful scenes won many hearts.

Popular roles

She played warm supporting parts in Something in the Rain (2018) and The King: Eternal Monarch (2020). In My Demon (2023), she plays Shin Da-jeong, a loyal secretary in the heroine's company. The role helped her win a Best Supporting Actress award at the 2023 SBS Drama Awards.

Recent work

In Our Sticky Love (2026), she plays Do Jeong-hwa. Seo Jeong-yeon is now one of the most trusted supporting actresses in Korea, and casting directors call her when a drama needs heart. Fans love her gentle smile, her perfect comic timing and the way she makes every family on screen feel real.