YooA (유아) is a South Korean artist under WM Entertainment. She is a member of the Korean pop girl group OH MY GIRL.
- Stage Name: YooA (유아)
- Legal Name: Yoo Shiah (유시아)
- Birth Name: Yoo Yeonjoo (유연주)
- Birthdate: September 17, 1995
- Birthplace: Seoul, Gyeonggi, South Korea
- Blood Type: A
- Height: 160cm
- Weight: 46kg
- Family: Mother, Father, Older Brother
- She was a trainee at WH Entertainment.
- Her birthname was "Yoo Yeon Joo" but she has legally changed it to "Yoo Shi Ah".
- Her old brother is a choreographer.
TV Music Shows
- Supui Ai (Bon Voyage)