Seo Jeong-yeon is a South Korean actress loved for her warm and funny supporting roles. She often plays nurses, mothers and loyal friends. Many know her from Descendants of the Sun (2016) and My Demon (2023).

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

Early life

She 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.

Career and breakthrough

She made her stage debut in 1996 and her film debut in 2001. She moved into television around 2011, and her breakthrough came as Nurse Ha Ja-ae in Descendants of the Sun (2016).

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, and won Best Supporting Actress at the 2023 SBS Drama Awards.

Recent work

In Our Sticky Love (2026), she plays Do Jeong-hwa. She is now one of the most trusted supporting actresses in Korea, loved for her gentle smile and perfect comic timing.