_01.jpg) Ishii at the 2024 Cary Tennis Classic | |
| Native name | 石井さやか |
|---|---|
| Country (sports) |  Japan |
| Born | 31 August 2005 Tokyo, Japan |
| Height | 1.73 m (5 ft 8 in) |
| Plays | Right-handed (two-handed backhand) |
| Prize money | US $116,940 |
| Singles | |
| Career record | 102–57 |
| Highest ranking | No. 188 (17 March 2025) |
| Current ranking | No. 188 (17 March 2025) |
| Grand Slam singles results | |
| Australian Open | Q2 (2025) |
| Doubles | |
| Career record | 22–23 |
| Highest ranking | No. 298 (17 February 2025) |
| Current ranking | No. 341 (17 March 2025) |
| Last updated on: 17 March 2025. | |
Sayaka Ishii (石井さやか, Ishii Sayaka, born 31 August 2005) is a Japanese professional tennis player. She has career-high rankings of world No. 188 in singles, achieved on 17 March 2025, and No. 298 in doubles, achieved on 17 February 2025.