Personal details
Known for
Acting
Gender
Female
Born
10 août 1992 (34)
Place of birth
Seoul, South Korea
Also known as
Go Ah-sung · Go A-seong · Go A-sung
Biography
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).
Connu(e) pour
6.9
Film
Snowpiercer
Yona
2013
7.0
Film
The Host
Park Hyun-seo
2006
7.4
Film
Pavane
Mi-jung
2026
6.5
Series
Tracer
Seo Hey-young
2022
7.8
Series
Heard It Through the Grapevine
Seo Bom
2015
8.3
Series
Life on Mars
Yoon Na-Young
2018
6.5
Film
3.11 A Sense of Home Films
2011
7.3
Film
The King
Miss Kim
2017
4.7
Series
Crime Puzzle
Yoo-hee
2021
4.0
Film
Nervous
Eunbyeol
2026
7.6
Film
The Beauty Inside
Woo-jin 101
2015
6.6
Series
Radiant Office
Eun Ho-Won
2017
6.8
Series
Sad Love Story
2005
8.0
Series
Edward Lee's Country Cook
Self
2025–
7.5
Series
Master of Study
Gil Pul-ip
2010
5.8
Film
Honeysweet
Serenade Woman
2023
6.5
Film
Time of Cinema
Director (segment "Naturally")
2026
7.7
Film
Samjin Company English Class
Lee Ja-young
2020
8.3
Film
A Melody to Remember
Park Joo-mi
2016
8.0
Film
A Resistance
Yu Gwan-sun
2019
7.1
Film
Because I Hate Korea
Joo Kye-na
2024
Acting credits 21 titles
Pavane
as Mi-jung
7.4
2026
Nervous
as Eunbyeol
4.0
2026
Time of Cinema
as Director (segment "Naturally")
6.5
2026
Edward Lee's Country Cook
as Self
8.0
2025–
Because I Hate Korea
as Joo Kye-na
7.1
2024
Honeysweet
as Serenade Woman
5.8
2023
Tracer
as Seo Hey-young
6.5
2022
Crime Puzzle
as Yoo-hee
4.7
2021
Samjin Company English Class
as Lee Ja-young
7.7
2020
A Resistance
as Yu Gwan-sun
8.0
2019
Life on Mars
as Yoon Na-Young
8.3
2018
Radiant Office
as Eun Ho-Won
6.6
2017
The King
as Miss Kim
7.3
2017
A Melody to Remember
as Park Joo-mi
8.3
2016
Heard It Through the Grapevine
as Seo Bom
7.8
2015
The Beauty Inside
as Woo-jin 101
7.6
2015
Snowpiercer
as Yona
6.9
2013
3.11 A Sense of Home Films
6.5
2011
Master of Study
as Gil Pul-ip
7.5
2010
The Host
as Park Hyun-seo
7.0
2006
Sad Love Story
6.8
2005