Koo Ja-sung

Acting • 1992-09-22

Goo Ja Sung is a South Korean actor and model. He made his acting debut in 2007. He has appeared in various dramas since his debut including, “Misty” (2018) and “The Secret Life of My Secretary” (2019).

Known For

7.5

The Secret Life of My Secretary

2019

7.4

Misty

2018

6.7

Was It Love?

2020

7.0

Motel California

2025

6.7

Sponsor

2022

3.8

Genesis

2021

Fan Club

No Nerds have favorited Koo Ja-sung yet — be the first.

All fan clubs

From Nerdspin

Filmography

2026
Naughty by ArrangementTV
Cha Kang-jun • 51 episodes
2025
Motel CaliforniaTV
Cha Seung-eon • 12 episodes
★ 7.0
2022
SponsorTV
Hyun Seung-hoon • 12 episodes
★ 6.7
2021
GenesisTV
Kim Min Ki • 6 episodes
★ 3.8
2021
The SirenFilm
Park Dong-gyu
★ 4.8
2020
Was It Love?TV
Oh Yun Woo • 16 episodes
★ 6.7
2019
The Secret Life of My SecretaryTV
Ki Dae-Joo • 32 episodes
★ 7.5
2018
MistyTV
Kwak Ki-seok • 16 episodes
★ 7.4
2018
Dunia: Into a New WorldTV
Koo Ja Sung • 15 episodes
★ 8.0
2017
The Blue SeaTV
Sung Ki-su • 5 episodes
★ 5.5
2015
Men on a MissionTV
Self • 1 episodes
★ 7.4