한 Yoon Seoyeon Yoon Seoyeon (윤서연) is a South Korean Female Artist. She started in group tripleS. Read All General Information International Stage Name : Yoon Seoyeon Domestic Stage Name : Pronounce 윤서연 Full Name : Yoon Seoyeon Pronounce Date of Birth : 2003-08-06 (age 23) Zodiac : Leo Country of Birth : South Korea Related Artists : tripleS - Vocal Original group : tripleS Images