Otani Marina (大谷満理奈) is a Japanese pop singer and Idol. She is a former first generation member of STU48.
- Birth Name: Otani Marina (大谷満理奈)
- Nicknames: Mariina (マリーナ), Tenrai-chan (天来ちゃん)
- Birthdate: February 14, 2004
- Birthplace: Yamaguchi, Japan
- Blood Type: A
- Height: 156cm
- Bands / Groups:
STU48 Song Participation
- Originally a first generation member of STU48, she announced her graduation on March 30, 2021. She graduated from the group on June 5, 2021.
- Attended Actors School Hiroshima in 2012.
- Prior to STU48, she was a member of the idol unit MAX♡GIRLS from 2016 to 2017.