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

You Hee-yeol's Sketchbook

The Seasons

SNL Korea

Baeksang Arts Awards

Show!terview with Jessi

Next Entertainment, Visionary

All Movies (23)

• Time of Cinema2026
• Pavane2026 · as Mi-jung
• Because I Hate Korea2024 · as Joo Kye-na
• Honeysweet2023 · as Serenade Woman
• Samjin Company English Class2020 · as Lee Ja-young
• A Resistance2019 · as Yu Gwan-sun
• The King2017 · as Miss Kim
• A Melody to Remember2016 · as Park Joo-mi
• Right Now, Wrong Then2015 · as Yeom Bora
• Office2015 · as Lee Mi-rye
• The Beauty Inside2015 · as Woo-jin 101
• Thread of Lies2014 · as Lee Man-ji
• Snowpiercer2013 · as Yona
• Snowpiercer International Special Animation2013 · as Yona (voice)
• Duet2012 · as Nancy
• 3.11 A Sense of Home Films2011
• After the Banquet2009 · as Mi-rae
• A Brand New Life2009 · as Ye-shin
• Radio Dayz2008 · as Sun-deok
• The Happy Life2007 · as Joo-hee
• The Host2006 · as Park Hyun-seo
• The Host : Histoires de famille— · as Go A-sung
• Nervous—

All TV Shows (25)

• 21c Woman Shelter2026 · as Self - Host
• 인생이 영화2025
• Edward Lee's Country Cook2025 · as Self
• Doona!2023 · as Ha-yeon
• Salon Drip2023 · as Self
• The Seasons2023 · as Self
• Tracer2022 · as Seo Hey-young
• Crime Puzzle2021 · as Yoo-hee
• SNL Korea2021 · as Self - Host
• Next Entertainment, Visionary2021 · as Self
• K-Ocean Pathfinders2020
• Show!terview with Jessi2020 · as Self
• Life on Mars2018 · as Yoon Na-Young
• Amazing Saturday2018 · as Self
• Radiant Office2017 · as Eun Ho-Won
• Midnight Diner: Tokyo Stories2016 · as Yoona
• Heard It Through the Grapevine2015 · as Seo Bom
• Baeksang Arts Awards2012 · as Self
• Running Man2010
• Master of Study2010 · as Gil Pul-ip
• You Hee-yeol's Sketchbook2009 · as Self
• Sad Love Story2005
• 울라불라 블루짱2004 · as Noh Da-ji
• I Am Also a Film Director—
• The Miracles of the Namiya General Store—