Myung Jae-hyun, known mononymously as Jaehyun, is a South Korean rapper, singer, songwriter and MC under KOZ Entertainment. He is the leader of the boy group BOYNEXTDOOR.

KNOWN FOR

Amazing Saturday
2025
Idol Radio
2024
Where Is My Home
2026
Just an Excuse
2026
M Countdown
2004
The Seasons
2025
IDOL 1N2D
2023
Jae Joong and Friends
2024
Eunchae's Star Diary
2023
WHAT? DOOR!
2023
Minju's Pink Cabinet
2025
SUMBAKKOKJIL
2025

FILMOGRAPHY

All
Movies
TV
Acting
20
2026
BOYNEXTDOOR 'KNOCK ON Vol.2' IN JAPAN
as Self
2026
Where Is My Home
2026
BOYNEXTDOOR Tomodachi Base
2026
Just an Excuse
as Self
2026
Living Together Without Hierarchy
as Self
2026
Machunda Kany
as Self
2025
The Seasons
as Self
2025
Minju's Pink Cabinet
as Self
2025
Amazing Saturday
as Self
2025
SUMBAKKOKJIL
as Self
2024
HYBE CINEMA NORAEBANG
as Self (archive footage)
2024
Jae Joong and Friends
2024
Is This Song Popular?
as Self
2024
Idol Radio
as Self
2023
BOYNEXTDOOR TONIGHT
as Self
2023
Eunchae's Star Diary
as Self
2023
WHAT? DOOR!
as Self
2023
FUNNEXTDOOR
as Self
2023
IDOL 1N2D
2004
M Countdown
as MC (Episode 824 - Present)