Seo Ah

Name: Seo Ah
Native name: 서아
Also Known as: Jung Haerin, Jeong Hae Rin, Jeong Haerin, 정해린, Seo A
Nationality: South Korean
Gender: Female
Born: June 11, 2010
Age: 16

Jung Hae Rin, known professionally as Seo Ah, is a South Korean singer, dancer and member of tripleS (트리플에스). She is enrolled at Hanlim Arts High School.

She made her official debut in May 2024 as the full group's maknae with their first album, "Assemble24". One month later, she made her debut as part of the sub-unit Glow with their first digital single, "Inner Dance".

They are managed by ModHaus (모드하우스), who crafted tripleS to be a decentralized idol group where the members will rotate between the full group, sub-units, and solo activities, as chosen by fans. As such, she is part of one different sub-unit, Glow. The agency has also assigned each member a number, and hers is S23.

(Source: MyDramaList) Edit Biography

Year	Title	#	Role	Rating
2025	Badge War Season 3: No Badge No Power Korean TV Show, 2025, 4 eps [Contestant] (Regular Member)	4	[Contestant] Regular Member	8.4
2024	2024 Idol Star Athletics Championships Chuseok Special Korean TV Show, 2024, 3 eps (Regular Member)	3	Regular Member	7.7
2024	Badge War Season 2 Korean TV Show, 2024, 4 eps [Contestant] (Regular Member)	4	[Contestant] Regular Member	8.1
2023	Ano-chan no Den Den Denpa Japanese TV Show, 2023, 180 eps (Ep. 70) (Guest)	180	(Ep. 70) Guest	0.0
2018	Omniscient Interfering View Korean TV Show, 2018, 500 eps [Special appearance] (Ep. 303) \| [Guest] (Ep. 307) (Guest)	500	[Special appearance] (Ep. 303) \| [Guest] (Ep. 307) Guest	7.8
2011	Weekly Idol Korean TV Show, 2011, 707 eps (Ep. 662) (Guest)	707	(Ep. 662) Guest	8.1
2011	Immortal Songs: Singing the Legend Korean TV Show, 2011, 800 eps (Ep. 675) (Guest)	800	(Ep. 675) Guest	8.2