Ko A-sung
NEW Watch the Trailer
as Mi-jung Pavane Released
February 19, 2026 RomanceDrama
Ko A-sung (born 10 August 1992) is a South Korean actress. She began her career as a child actress, notably in 2006 top-grossing blockbuster The Host. This was followed by major roles in Snowpiercer (2013), Thread of Lies (2014) and Office (2015), as well as the TV dramas Master of Study (2010) and Heard It Through the Grapevine (2015).
Filmography
Snowpiercer
as Yona
The Host
as Park Hyun-seo
The Beauty Inside
as Woo-jin 101
Right Now, Wrong Then
as Yeom Bora
The King
as Miss Kim
Office
as Lee Mi-rye
A Brand New Life
as Ye-shin
Thread of Lies
as Lee Man-ji
Pavane
as Mi-jung
Samjin Company English Class
as Lee Ja-young
A Melody to Remember
as Park Joo-mi
Honeysweet
as Serenade Woman
A Resistance
as Yu Gwan-sun
Happy Life
as Gi-yeong's daughter, Joo-hee
Because I Hate Korea
as Joo Kye-na
Radio Dayz
as Sun-deok
Duet
as Nancy
After the Banquet
as Mi-rae
Snowpiercer International Special Animation
as Yona (voice)