Ko 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).

Known For

Running Man

Amazing Saturday

Self

You Hee-yeol's Sketchbook

Self

Heard It Through the Grapevine

Seo Bom

Show!terview with Jessi

Herself

Midnight Diner: Tokyo Stories

Yoona

The Seasons

Self

Snowpiercer

Yona

Filmography

Year	Movie	Role
2024	Because I Hate Korea	Joo Kye-na
2023	Honeysweet	Serenade Woman
2020	Samjin Company English Class	Lee Ja-young
2019	A Resistance	Yu Gwan-sun
2017	The King	Miss Kim
2016	A Melody to Remember	Park Joo-mi
2015	Office	Lee Mi-rye
2015	The Beauty Inside	Woo-jin 101
2015	Right Now, Wrong Then	Yeom Bo-ra
2014	Thread of Lies	Lee Man-ji
2013	Snowpiercer	Yona
2013	Snowpiercer International Special Animation	Yona (voice)
2012	Duet	Nancy
2011	3.11 A Sense of Home Films
2009	After the Banquet	Mi-rae
2009	A Brand New Life	Ye-shin
2008	Radio Dayz	Sun-deok
2007	Happy Life	Gi-yeong's daughter, Joo-hee
2006	The Host	Park Hyun-seo
	The Host : Histoires de famille	Go A-sung
	Pavane: For A Dead Princess	Mi-jung
	Nervous

Year	TV Show	Role
2025	Edward Lee's Country Cook	Self
2023	The Seasons	Self
2023	Doona!	Ha-yeon
2022	Tracer	Seo Hey-young
2021	Crime Puzzle	Yoo-hee
2021	Next Entertainment, Visionary	Self
2020	Show!terview with Jessi	Herself
2020	K-Ocean Pathfinders
2018	Amazing Saturday	Self
2018	Life on Mars	Yoon Na-Young
2017	Radiant Office	Eun Ho-Won
2016	Midnight Diner: Tokyo Stories	Yoona
2015	Heard It Through the Grapevine	Seo Bom
2012	Baeksang Arts Awards	Self
2010	Master of Study	Gil Pul-ip
2010	Running Man
2009	You Hee-yeol's Sketchbook	Self
2004	울라불라 블루짱	Noh Da-ji
	I Am Also a Film Director