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).
Edward Lee's Country Cook
Self · (10 episodes)
2025
Because I Hate Korea
Joo Kye-na
2024
Doona!
Ha-yeon · (5 episodes)
2023
Honeysweet
Serenade Woman
2023
The Seasons
Self · (1 episode)
2023
Tracer
Seo Hey-young · (16 episodes)
2022
Crime Puzzle
Yoo-hee · (16 episodes)
2021
Next Entertainment, Visionary
Self · (1 episode)
2021
Samjin Company English Class
Lee Ja-young
2020
K-Ocean Pathfinders
(5 episodes)
2020
Show!terview with Jessi
Herself · (1 episode)
2020
A Resistance
Yu Gwan-sun
2019
Life on Mars
Yoon Na-Young · (16 episodes)
2018
Amazing Saturday
Self · (1 episode)
2018
Radiant Office
Eun Ho-Won · (16 episodes)
2017
The King
Miss Kim
2017
Midnight Diner: Tokyo Stories
Yoona · (1 episode)
2016
A Melody to Remember
Park Joo-mi
2016
Right Now, Wrong Then
Yeom Bo-ra
2015
Office
Lee Mi-rye
2015
The Beauty Inside
Woo-jin 101
2015
Heard It Through the Grapevine
Seo Bom · (30 episodes)
2015
Thread of Lies
Lee Man-ji
2014
Snowpiercer
Yona
2013
Snowpiercer International Special Animation
Yona (voice)
2013
Baeksang Arts Awards
Self · (1 episode)
2012
Duet
Nancy
2012
3.11 A Sense of Home Films
2011
Running Man
(1 episode)
2010
Master of Study
Gil Pul-ip · (16 episodes)
2010
After the Banquet
Mi-rae
2009
A Brand New Life
Ye-shin
2009
Radio Dayz
Sun-deok
2008
Happy Life
Gi-yeong's daughter, Joo-hee
2007
The Host
Park Hyun-seo
2006
The Host : Histoires de famille
Go A-sung
Pavane: For A Dead Princess
Mi-jung
Nervous
I Am Also a Film Director
(1 episode)
You Hee-yeol's Sketchbook
Self · (1 episode)
2009
울라불라 블루짱
Noh Da-ji · (1 episode)
2004