Imai Yu (今井優) is a Japanese Idol singer.
- Birth Name: Imai Yu (今井優)
- Nickname: Yuu (ゆう)
- Date of Birth: April 17, 1985
- Place of Birth: Saitama, Japan
- Blood Type: B
- Height: 152cm
- Bands / Groups:
- AKB48 Song Participation
- Ame no Doubutsuen (雨の動物園)
- Kurukurupaa (くるくるぱー)
- Originally a second generation member of AKB48 and a founding member of Team K. She graduated from the group on June 22, 2007 to become an actress.