Ishihara Yuuna (石原侑奈) is a Japanese singer and Idol managed by STU. She is a 3rd generation member of the Japanese pop girl group STU48.
- Name: Ishihara Yuuna (石原侑奈)
- Nickname: Yuunan (ゆーなん)
- Birthdate: August 7, 2004
- Birthplace: Okayama, Japan
- Blood Type: B
- Hobbies: Idol appreciation
- Specialties: Moving her ears
- Bands / Groups:
STU48 Song Participation
- Currently a member of STU48 Kenkyuusei as of April 9, 2023.
- Favorite Food: Crab cream croquette
- Recommended Things in Setouchi: Naoshima
- Desired Penlight Color: White × light pink
- Attention Point: Smile
- Jobs I Would Like to Try This Year: Attending an event in Okayama