Seoyeon (서연), alternatively spelled Suhyeon, may refer to:
- People
- Seoyeon of CSR
- Seoyeon of FAVORITE
- Lee Seoyeon of fromis_9 and former Idol School contestant
- Seoyeon of Peony
- Seoyeon of Redplum
- Seo Yeon of SHA SHA
- Yoon Seoyeon of tripleS
- Ji Suhyeon (currently known as JiYeon) of tripleS
- Seoyeon of Winsome
- Seoyeon, former member of A-DEAN
- Seo Yeon, former pre-debut member of AZM and Instar
- Seoyeon, former member of Bloomy
- Sung Seoyeon, former member of Burvey
- Lee Seoyeon, former member of CutieL
- Seoyeon, former member of Kirots
- Han Seoyeon, former member of Leader'S
- Park Seoyeon (2011), former member of LUNA KIDS[1]
- Park Seoyeon (2012), former member of LUNA KIDS[1]
- Seoyeon, former member of Sunny Days
- Seoyeon, former member of YOURS
- Won Seoyeon, former Produce 48 contestant
- Seoyeon, former R U Next? contestant
- Kim Seoyeon, former Universe Ticket contestant