| Ayaka Okuno 奥野 彩加 | |
| Residence: | Santa Clara, California, U.S. |
| Birth Date: | 1995 6, df=y |
| Birth Place: | Osaka Prefecture, Japan |
| Height: | 1.7m (05.6feet) |
| Plays: | Right (two-handed backhand) |
| Careerprizemoney: | $109,946 |
| Singlestitles: | 2 ITF |
| Highestsinglesranking: | No. 263 (22 February 2016) |
| Australianopenjuniorresult: | 2R (2011) |
| Frenchopenjuniorresult: | 3R (2013) |
| Wimbledonjuniorresult: | 1R (2013) |
| Usopenjuniorresult: | 1R (2011, 2013) --> |
| Doublestitles: | 13 ITF |
| Highestdoublesranking: | No. 147 (10 April 2017) |
| Australianopendoublesjuniorresult: | QF (2011) |
| Frenchopendoublesjuniorresult: | 1R (2011, 2013) |
| Wimbledondoublesjuniorresult: | 2R (2013) |
| Usopendoublesjuniorresult: | QF (2013) --> |
is a Japanese former professional tennis player.
In her career, she won two singles titles and 13 doubles titles on the ITF Women's Circuit. On 22 February 2016, she reached her best singles ranking of world No. 263. On 10 April 2017, she peaked at No. 147 in the doubles rankings.
Okuno made her WTA Tour singles debut at the 2016 Taiwan Open, where she qualified for the main draw.
| Result | No. | Date | Tournament | Surface | Opponent | Score | |
|---|---|---|---|---|---|---|---|
| Win | 1. | 6 October 2014 | ITF Cairns, Australia | Hard |  Ellen Allgurin | 6–1, 7–5 | |
| Win | 2. | 20 July 2015 | ITF Hong Kong, China SAR | Hard |  Prerna Bhambri | 6–4, 6–0 | |
| Loss | 1. | 18 February 2017 | ITF Nanjing, China | Hard | 4–6, 4–6 |
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| Result | No. | Date | Tournament | Tier | Surface | Partner | Opponents | Score | |
|---|---|---|---|---|---|---|---|---|---|
| Loss | 1. | 21 April 2014 | ITF Bangkok, Thailand | Hard |  Ashling Sumner |  Yurina Koshino Chihiro Nunome | 4–6, 2–6 | ||
| Win | 1. | 2 June 2014 | ITF Pachuca, Mexico | Hard |  Vera Aleshcheva |  Giovanna Manifacio Yadira Rubio | 7–6(5), 3–6, [10–7] | ||
| Loss | 2. | 8 August 2014 | ITF Caracas, Venezuela | Hard |  Vanesa Furlanetto Florencia Molinero | 0–6, 0–6 | |||
| Loss | 3. | 25 August 2014 | ITF San Luis Potosí, Mexico | Hard |  Erin Clark | Victoria Rodríguez Marcela Zacarías | 1–6, 7–5, [8–10] | ||
| Loss | 4. | 13 September 2014 | ITF Kyoto, Japan | Hard (i) | Michika Ozeki | Makoto Ninomiya Kyōka Okamura | 3–6, 3–6 | ||
| Loss | 5. | 8 October 2014 | ITF Cairns, Australia | Hard | Alison Bai | Jessica Moore Abbie Myers | 2–6, 2–6 | ||
| Win | 2. | 24 January 2015 | ITF Saint Martin, France | Hard | Alexa Guarachi | Lena Litvak  Sonja Molnar | 7–5, 6–3 | ||
| Loss | 6. | 22 March 2015 | ITF Irapuato, Mexico | Hard | Ana Sofía Sánchez | Marcela Zacarías Victoria Rodríguez | 1–6, 5–7 | ||
| Loss | 7. | 28 March 2015 | ITF Mornington, Australia | Clay | Mana Ayukawa | Priscilla Hon Tammi Patterson | 4–6, 6–7(4) | ||
| Win | 3. | 25 September 2015 | ITF Bangkok, Thailand | Hard | Hiroko Kuwata | Mana Ayukawa Yuuki Tanaka | 2–6, 6–1, [10–6] | ||
| Win | 4. | ITF Bangkok, Thailand | Hard |  Valeriya Strakhova |  Chompoothip Jandakate Peangtarn Plipuech | 6–2, 7–6(2) | |||
| Loss | 8. | 7 May 2016 | Kangaroo Cup, Japan | 75,000 | Hard | Hiroko Kuwata | Eri Hozumi Miyu Kato | 1–6, 2–6 | |
| Win | 5. | 4 September 2016 | ITF Noto, Japan | Carpet | Rika Fujiwara | Akari Inoue Miki Miyamura | 6–4, 1–6, [10–6] | ||
| Win | 6. | 22 October 2016 | ITF Hamamatsu, Japan | Carpet | Jana Fett | Hsu Chieh-yu  Justyna Jegiołka | 4–6, 7–6(5), [12–10] | ||
| Loss | 9. | 19 November 2016 | Toyota World Challenge, Japan | 50,000 | Carpet (i) | Rika Fujiwara | Ksenia Lykina Akiko Omae | 7–6(4), 2–6, [5–10] | |
| Win | 7. | 21 January 2017 | ITF Cairo, Egypt | Clay |  Chantal Škamlová | Fatma Al-Nabhani  Sandra Samir | 4–6, 6–4, [10–6] | ||
| Win | 8. | 28 January 2017 | ITF Cairo, Egypt | Clay | Chantal Škamlová | Fatma Al-Nabhani Sandra Samir | 6–3, 6–1 | ||
| Win | 9. | 11 March 2017 | ITF Yokohama, Japan | Hard | Erika Sema | Kanako Morisaki Minori Yonehara | 6–4, 6–4 | ||
| Loss | 10. | 27 May 2017 | ITF Karuizawa, Japan | Carpet | Tammi Patterson | Chisa Hosonuma Kanako Morisaki | 5–7, 3–6 | ||
| Loss | 11. | 5 August 2017 | ITF Fort Worth, US | Hard | Miharu Imanishi | Giuliana Olmos Ellen Perez | 4–6, 3–6 | ||
| Loss | 12. | 9 September 2017 | ITF Kyoto, Japan | Hard (i) | Kajsa Rinaldo Persson | Akari Inoue Michika Ozeki | 6–4, 3–6, [8–10] | ||
| Loss | 13. | 22 October 2017 | ITF Hamamatsu, Japan | Carpet |  Lu Jiajing | Rika Fujiwara Kyōka Okamura | 2–6, 4–6 | ||
| Win | 10. | 7 April 2018 | ITF Kashiwa, Japan | Hard | Kyōka Okamura |  Han Na-lae Robu Kajitani | 6–2, 6–2 | ||
| Win | 11. | 13 July 2018 | ITF Solo, Indonesia | Hard | Rifanty Kahfiani | Fitriani Sabatini Fitriana Sabrina | 6–4, 6–0 | ||
| Loss | 14. | 4 August 2018 | ITF Fort Worth, US | Hard | Olivia Tjandramulia | Hsu Chieh-yu Marcela Zacarías | 6–3, 6–7(6), [6–10] | ||
| Loss | 15. | 30 November 2018 | ITF Hua Hin, Thailand | Hard | Aldila Sutjiadi | Nudnida Luangnam Bunyawi Thamchaiwat | 4–6, 2–6 | ||
| Win | 12. | 19 January 2019 | ITF Antalya, Turkey | Clay | Kanako Morisaki |  Vlada Ekshibarova Julia Stamatova | 6–2, 6–2 | ||
| Win | 13. | 4 February 2019 | ITF Antalya, Turkey | Clay | Kanako Morisaki | Haruna Arakawa  Doga Turkmen | 7–5, 6–3 | ||
| Loss | 16. | 26 February 2023 | ITF Kuala Lumpur, Malaysia | 15,000 | Hard | Anchisa Chanta | Guo Hanyu Li Yu-yun | 0–6, 6–2, [2–10] |