Jeong Ji Yoon

Name: Jeong Ji Yoon
Native name: 정지윤
Also Known as: Jung Jiyoon, Jung Yi Joon, Jung Jiyun, Jeong Ji Yun
Nationality: South Korean
Gender: Female
Born: September 15, 2000
Age: 25

Jeong Ji Yoon, known mononymously as Jiyoon, is a South Korean singer, dancer and member of ICHILLIN' (아이칠린). She graduated from Jamsil Girls’ High School and, before debuting, spent time as a trainee at Polaris Entertainment.

She joined ICHILLIN' as the new main vocalist in October 2022 (the group debuted in September 2021) for their third digital single, "My Time". After Sohee's departure 3 months earlier, KM Entertainment (KM엔터테인먼트) wanted to maintain the number of group members at 7, so she was added to the lineup.

(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
2024	2024 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2024, 3 eps (Regular Member)	3	Regular Member	7.7
2023	Secret Tour Korean TV Show, 2023, 30 eps (Ep. 3, 8) (Guest)	30	(Ep. 3, 8) Guest	0.0
2023	The Next: Battle of the K-Pop Girl Groups Korean TV Show, 2023, 6 eps [Contestant] (Regular Member)	6	[Contestant] Regular Member	0.0
2022	Dancing Dol Stage Season 2 Korean TV Show, 2022, 3 eps [Contestant] (Regular Member)	3	[Contestant] Regular Member	7.5
2022	The Door: Spin-Off Korean TV Show, 2022, 6 eps (Ep. 1) (Guest)	6	(Ep. 1) Guest	8.0
2022	Secret Airlines Korean TV Show, 2022, 21 eps (Ep. 13) (Guest)	21	(Ep. 13) Guest	0.0
2021	Chillin' Time Korean TV Show, 2021, 7 eps (Regular Member)	7	Regular Member	0.0
2021	Girls Planet 999 Korean TV Show, 2021, 12 eps [Contestant] (Regular Member)	12	[Contestant] Regular Member	7.3