Si Yun

Name: Si Yun
Native name: 시윤
Also Known as: Kim Shi Yoon, Kim Shiyoon, Kim Siyun, 김시윤
Nationality: South Korean
Gender: Male
Born: August 24, 2004
Age: 22

Kim Si Yun, known mononymously as Si Yun, is a South Korean singer, dancer, and member of NOWZ (나우즈; formerly known as NOWADAYS). He graduated from Bundang Central High School.

He made his debut in April 2024 as the group's rapper and maknae with their first self-titled single album, "Nowadays".

In June 2025, CUBE Entertainment (큐브엔터테인먼트) announced that the group would be re-branded as NOWZ but did not provide an official statement clarifying the situation.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2025	2025 Idol Star Athletics Championships Korean TV Show, 2025, 3 eps (Regular Member)	3	Regular Member	7.6
2025	Idol DKDK Club Korean TV Show, 2025, 18 eps (Ep. 16) (Guest)	18	(Ep. 16) Guest	0.0
2024	Starlight Boys Korean TV Show, 2024, 10 eps (Ep. 7) (Guest)	10	(Ep. 7) Guest	6.3
2024	2024 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2024, 3 eps (Regular Member)	3	Regular Member	7.7
2024	ENA K-Pop Up Chart Show Korean TV Show, 2024, 7 eps (Ep. 4, 7) (Guest)	7	(Ep. 4, 7) Guest	0.0
2023	Secret Tour Korean TV Show, 2023, 30 eps (Ep. 23) (Guest)	30	(Ep. 23) Guest	0.0
2023	Dope Club Korean TV Show, 2023, 20 eps (Ep. 17) (Guest)	20	(Ep. 17) Guest	7.7
2022	Idol 1N2D Korean TV Show, 2022, 102 eps (Ep. 32) (Guest)	102	(Ep. 32) Guest	8.3
2013	After School Club Korean TV Show, 2013, 671 eps (Ep. 623) (Guest)	671	(Ep. 623) Guest	7.8