Notes:
Pre-debut, disbanded and children groups will not be counted.
Some of the people on this list have debuted multiple times — the women are eligible for inclusion if they debuted in a fourth gen group that is still active, and only their fourth generation debut will be listed. Additionally, members that joined a group after its debut will be counted if the group as a whole is considered to be a fourth generation group.
Top 10 Oldest
10. Jiwon
Stage Name: Jiwon (지윈)
Birth Name: Park Jiwon (박지윈)
Group: fromis_9
Birthday: March 20, 1998
Debut Year: 2018
9. Sakura
Stage Name: Sakura (사쿠라)
Birth Name: Miyawaki Sakura (宮脇咲良)
Group: LE SSERAFIM
Birthday: March 19, 1998
Debut Year: 2022
8. Minnie
Stage Name: Minnie (민니)
Birth Name: Nicha Yontararak (ณิชา ยนตรรักษ์)
Group: i-dle
Birthday: October 23, 1997
Debut Year: 2018
7. Hayoung
Stage Name: Hayoung (하영)
Birth Name: Song Hayoung (송하영)
Group: fromis_9
Birthday: September 29, 1997
Debut Year: 2018
6. HaSeul
Stage Name: HaSeul (하슬)
Birth Name: Cho Haseul (초하슬)
Group: ARTMS
Birthday: August 18, 1997
Debut Year: 2024
5. Jinsoul
Stage Name: JinSoul (진솔)
Birth Name: Jeong Jinsol (정진솔)
Group: ARTMS
Birthday: June 13, 1997
Debut Year: 2024
4. Eunha
Stage Name: Eunha (은하)
Birth Name: Jung Eunbi (정은비)
Group: VIVIZ
Birthday: May 30, 1997
Debut Year: 2020
3. Miyeon
Stage Name: Miyeon (미연)
Birth Name: Cho Miyeon (조미연)
Group: i-dle
Birthday: January 31st, 1997
Debut Year: 2018
2. Yujin
Stage Name: Yujin (유진)
Birth Name: Choi Yujin (최유진)
Group: Kep1er
Birthday: August 12, 1996
Debut Year: 2022
1. Fatou
Stage Name: Fatou (파투)
Birth Name: Samba Fatou Diouf
Group: BLACKSWAN
Birthday: March 23, 1995
Debut Year: 2020 (BLACKSWAN) / 2022 (Soloist)
Top 10 Youngest
10. Kyujin
Stage Name: Kyujin
Birth Name: Jang Kyujin
Group: NMIXX
Birthday: May 26, 2006
Debut Year: 2022
9. Eunchae
Stage Name: Eunchae (은채)
Birth Name: Hong Eun Chae (홍은채)
Group: LE SSERAFIM
Birthday: November 10, 2006
Debut Year: 2022
8. Riwon
Stage Name: Riwon (리원)
Birth Name: Kim Riwon (김리원)
Group: CLASS:y
Birthday: January 11, 2007
Debut Year: 2022
7. Leeseo
Stage Name: Leeseo (이서)
Birth Name: Lee Hyunseo (이현서)
Group: IVE
Birthday: February 21, 2007
Debut Year: 2021
6. Yerin
Stage Name: Yerin (여린)
Birth Name: Ahn Yerin (안여린)
Group: MIMIIROSE
Birthday: March 18, 2007
Debut Year: 2022
Note: While MIMIIROSE debuted in 2022, Yerin did not join the group until 2024.)
5. Jimin
Stage Name: Jimin
Birth Name: Won Jimin
Group: CLASS:y
Birthday: November 25, 2007
Debut Year: 2022
4. Boeun
Stage Name: Boeun (보은)
Birth Name: Park Boeun (박보은)
Group: CLASS:y
Birthday: February 11, 2008
Debut Year: 2022
3. Seonyou
Stage Name: Seonyou (선유)
Birth Name: Kim Seonyou (김선유)
Group: CLASS:y
Birthday: March 20, 2008
Debut Year: 2022
2. Hyein
Stage Name: Hyein (혜인)
Birth Name: Lee Hyein (이혜인)
Group: NewJeans
Birthday: April 21, 2008
Debut Year: 2022
1. Seoha
Stage Name: Seoha (서하)
Birth Name: Lee Seoha (이서하)
Group: Queenz Eye
Birthday: August 28, 2009
Debut Year: 2022
Note: Queenz Eye debuted in 2022, though Seoha did not join the group until 2025.
Made by yubincvlts
Are any of your biases here? Did we miss any groups? Comment down below! 🙂
