Ayaka Okuno
Ayaka Okuno is a Japanese professional tennis player.
She has won two singles 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 singles debut at the 2016 Taiwan Open, where she qualified for the main draw.
ITF finals (15–16)
Singles (2–1)
| Outcome | No. | Date | Tournament | Surface | Opponent | Score |
| Winner | 1. | 6 October 2014 | Cairns, Australia | Hard |  Ellen Allgurin | 6–1, 7–5 |
| Winner | 2. | 20 July 2015 | Hong Kong | Hard |  Prerna Bhambri | 6–4, 6–0 |
| Runner-up | 1. | 18 February 2017 | Nanjing, China | Hard |  Xun Fangying | 4–6, 4–6 |
Doubles (13–15)
| Outcome | No. | Date | Tournament | Surface | Partner | Opponents | Score |
| Runner-up | 1. | 21 April 2014 | Bangkok, Thailand | Hard |  Ashling Sumner |  Yurina Koshino Chihiro Nunome | 4–6, 2–6 |
| Winner | 1. | 2 June 2014 | Pachuca, Mexico | Hard |  Vera Aleshcheva |  Giovanna Manifacio Yadira Rubio | 7–6, 3–6, |
| Runner-up | 2. | 8 August 2014 | Caracas, Venezuela | Hard |  Clothilde de Bernardi |  Vanesa Furlanetto Florencia Molinero | 0–6, 0–6 |
| Runner-up | 3. | 25 August 2014 | San Luis Potosí, Mexico | Hard |  Erin Clark | Victoria Rodríguez Marcela Zacarías | 1–6, 7–5, |
| Runner-up | 4. | 13 September 2014 | Kyoto, Japan | Hard | Michika Ozeki | Makoto Ninomiya Kyōka Okamura | 3–6, 3–6 |
| Runner-up | 5. | 8 October 2014 | Cairns, Australia | Hard | Alison Bai | Jessica Moore Abbie Myers | 2–6, 2–6 |
| Winner | 2. | 24 January 2015 | Saint Martin, France | Hard | Alexa Guarachi | Lena Litvak  Sonja Molnar | 7–5, 6–3 |
| Runner-up | 6. | 22 March 2015 | Irapuato, Mexico | Hard | Ana Sofía Sánchez | Marcela Zacarías Victoria Rodríguez | 1–6, 5–7 |
| Runner-up | 7. | 28 March 2015 | Mornington, Australia | Clay | Mana Ayukawa | Priscilla Hon Tammi Patterson | 4–6, 6–7 |
| Winner | 3. | 25 September 2015 | Bangkok, Thailand | Hard | Hiroko Kuwata | Mana Ayukawa Yuuki Tanaka | 2–6, 6–1, |
| Winner | 4. | Bangkok, Thailand | Hard |  Valeriya Strakhova |  Chompoothip Jandakate Peangtarn Plipuech | 6–2, 7–6 | |
| Runner-up | 8. | 7 May 2016 | Gifu, Japan | Hard | Hiroko Kuwata | Eri Hozumi Miyu Kato | 1–6, 2–6 |
| Winner | 5. | 4 September 2016 | Noto, Japan | Carpet | Rika Fujiwara | Akari Inoue Miki Miyamura | 6–4, 1–6, |
| Winner | 6. | 22 October 2016 | Hamamatsu, Japan | Carpet |  Jana Fett |  Hsu Chieh-yu  Justyna Jegiołka | 4–6, 7–6, |
| Runner-up | 9. | 19 November 2016 | Toyota, Japan | Carpet | Rika Fujiwara | Ksenia Lykina Akiko Omae | 7–6, 2–6, |
| Winner | 7. | 21 January 2017 | Cairo, Egypt | Clay |  Chantal Škamlová |  Fatma Al-Nabhani  Sandra Samir | 4–6, 6–4, |
| Winner | 8. | 28 January 2017 | Cairo, Egypt | Clay | Chantal Škamlová | Fatma Al-Nabhani Sandra Samir | 6–3, 6–1 |
| Winner | 9. | 11 March 2017 | Yokohama, Japan | Hard | Erika Sema | Kanako Morisaki Minori Yonehara | 6–4, 6–4 |
| Runner-up | 10. | 27 May 2017 | Karuizawa, Japan | Carpet | Tammi Patterson | Chisa Hosonuma Kanako Morisaki | 5–7, 3–6 |
| Runner-up | 11. | 5 August 2017 | Fort Worth, United States | Hard | Miharu Imanishi | Giuliana Olmos Ellen Perez | 4–6, 3–6 |
| Runner-up | 12. | 9 September 2017 | Kyoto, Japan | Hard | Kajsa Rinaldo Persson | Akari Inoue Michika Ozeki | 6–4, 3–6, |
| Runner-up | 13. | 22 October 2017 | Hamamatsu, Japan | Carpet | Lu Jiajing | Rika Fujiwara Kyōka Okamura | 2–6, 4–6 |
| Winner | 10. | 7 April 2018 | Kashiwa, Japan | Hard | Kyōka Okamura |  Han Na-lae Robu Kajitani | 6–2, 6–2 |
| Winner | 11. | 13 July 2018 | Solo, Indonesia | Hard |  Rifanty Kahfiani | Fitriani Sabatini Fitriana Sabrina | 6–4, 6–0 |
| Runner-up | 14. | 4 August 2018 | Fort Worth, United States | Hard | Olivia Tjandramulia | Hsu Chieh-yu Marcela Zacarías | 6–3, 6–7, |
| Runner-up | 15. | 30 November 2018 | Hua Hin, Thailand | Hard | Aldila Sutjiadi | Nudnida Luangnam Bunyawi Thamchaiwat | 4–6, 2–6 |
| Winner | 12. | 19 January 2019 | Antalya, Turkey | Clay | Kanako Morisaki |  Vlada Ekshibarova  Julia Stamatova | 6–2, 6–2 |
| Winner | 13. | 4 February 2019 | Antalya, Turkey | Clay | Kanako Morisaki | Haruna Arakawa  Doga Turkmen | 7–5, 6–3 |