Jeongyeon (정연) is a South Korean singer under JYP Entertainment. She is a member of the Korean pop girl group TWICE.
- Stage Name: Jeongyeon (정연)
- Birth Name: Yoo Jeongyeon (유정연)
- Birthdate: November 1, 1996
- Height: 169cm
- Weight: 50kg
- Blood Type: O
- Hobbies: Watching eating broadcast videos
- Education: Apgujeong Senior High School
- [2016-2017] Inkigayo (MC 2016.07.03 ~ 2017.01.29)
-  GOT7 - Girls Girls Girls
-  miss A - Only You
- Wii game 'Just Dance 2' CF
- She is the younger sister of the actress Gong Seung Yeon.
- She did the fashion runway for Miss Gee 2013 S/S Collection (With Nayeon & Jihyo)