Koo Ja-sung

In this Korean name, the family name is Koo.

Koo Ja-sung is a South Korean actor and model.^[1]

Koo Ja-sung
구자성
Koo Ja-sung in September 2019
Born	(1992-09-22) September 22, 1992 (age 33) South Korea
Agent	PLK Entertainment

Koo Ja-sung
Hangul	구자성
RR	Gu Jaseong
MR	Ku Chasŏng

Filmography

Television series

Year	Títle	Role	Notes	Ref.
2017	The Blue Sea	Seong Ki-soo
2018	Misty	Kwak Gi-seok		[2][3]
2019	The Secret Life of My Secretary	Ki Dae-joo		[4]
2020	Was It Love?	Oh Yeon Woo
2021	Drama Special – "Siren"	Park Dong-gyu		[5]
2022	Sponsor	Hyun Seung-hoon		[6][7]
2025	Motel California	Cha Seung-eon		[8]

Movies

Year	Title	Role	Notes
2007	Milky Way Liberation Front

Variety shows

Year	Show	Notes
2018	Dunia: Into A New World	(ep. #2-9) - member[9][10]