| Hiraiwa Yuna 平岩 優奈 | |
|---|---|
| Full name | Hiraiwa Yuna |
| Country represented |  Japan |
| Born | 21 November 1998 Nerima, Tokyo, Japan |
| Hometown | Tokyo |
| Discipline | Women's artistic gymnastics |
| Level | Senior international elite |
| Years on national team | 2014, 2020–present (JPN) |
| Club | Toda Sports Club Mukogawa Women's University Mitsubishi Yowa Gymnastics |
| Head coach(es) | Risa Toyoshima |
| Former coach(es) | Kazukuni Ohno |
Hiraiwa Yuna (平岩 優奈, Hiraiwa Yūna, born 21 November 1998) is a Japanese artistic gymnast. She is the 2014 and 2021 Japanese national all-around bronze medalist and the 2014 Japanese balance beam champion. She was a member of the Japanese teams for the 2014 World Championships and the 2020 Summer Olympics.