| Singles | |
|---|---|
| 2015 Kurume Best Amenity Cup | |
| Champion |  Nao Hibino |
| Runner-up | Eri Hozumi |
| Final score | 6–3, 6–1 |
Wang Qiang was the defending champion, but chose not to participate.
Nao Hibino won the title, defeating Eri Hozumi in an all-Japanese final, 6–3, 6–1.
An-Sophie Mestach (quarterfinals)
Kristýna Plíšková (semifinals) Eri Hozumi (final) Junri Namigata (first round)
Naomi Broady (second round)
Ekaterina Bychkova (semifinals) Nao Hibino (champion) Miharu Imanishi (quarterfinals)| Semifinals | Final | ||||||||||||
| 7 | Nao Hibino | 1 | 6 | 7 | |||||||||
| 6 | Ekaterina Bychkova | 6 | 4 | 5 | |||||||||
| 7 | Nao Hibino | 6 | 6 | ||||||||||
| 3 | Eri Hozumi | 3 | 1 | ||||||||||
| 3 | Eri Hozumi | 77 | 6 | ||||||||||
| 2 | Kristýna Plíšková | 65 | 3 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A-S Mestach | 6 | 6 | ||||||||||||||||||||||||
| K Dunne | 3 | 4 | 1 | A-S Mestach | 6 | 6 | |||||||||||||||||||||
| WC | K Okamura | 6 | 6 | WC | K Okamura | 3 | 2 | ||||||||||||||||||||
| WC | A Yonemura | 0 | 1 | 1 | A-S Mestach | 2 | 2 | ||||||||||||||||||||
 A Bai | 6 | 0 | 77 | 7 | N Hibino | 6 | 6 | ||||||||||||||||||||
| E Sema | 4 | 6 | 63 | A Bai | 3 | 5 | |||||||||||||||||||||
| R Sawayanagi | 3 | 2 | 7 | N Hibino | 6 | 7 | |||||||||||||||||||||
| 7 | N Hibino | 6 | 6 | 7 | N Hibino | 1 | 6 | 7 | |||||||||||||||||||
| 4 | J Namigata | 6 | 1 | 3 | 6 | E Bychkova | 6 | 4 | 5 | ||||||||||||||||||
| A Morgina | 3 | 6 | 6 | A Morgina | 4 | 0 | |||||||||||||||||||||
| Q | M Ninomiya | 6 | 4 | 3 |  S-j Jang | 6 | 6 | ||||||||||||||||||||
| S-j Jang | 2 | 6 | 6 | S-j Jang | 6 | 3 | 3 | ||||||||||||||||||||
 A Naydenova | 3 | 6 | 6 | 6 | E Bychkova | 3 | 6 | 6 | |||||||||||||||||||
| H Dart | 6 | 3 | 3 | A Naydenova | 2 | 4 | |||||||||||||||||||||
 I de Vroome | 4 | 5 | 6 | E Bychkova | 6 | 6 | |||||||||||||||||||||
| 6 | E Bychkova | 6 | 7 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | N Broady | 5 | 6 | 6 | |||||||||||||||||||||||
 S Celik | 7 | 2 | 3 | 5 | N Broady | 2 | 6 | 3 | |||||||||||||||||||
| Q | C Okadaue | 77 | 3 | 4 | M Inoue | 6 | 3 | 6 | |||||||||||||||||||
| M Inoue | 63 | 6 | 6 | M Inoue | 5 | 1 | |||||||||||||||||||||
| Q |  M Zakarlyuk | 6 | 6 | 3 | E Hozumi | 7 | 6 | ||||||||||||||||||||
| WC | M Minokoshi | 3 | 2 | Q | M Zakarlyuk | 63 | 5 | ||||||||||||||||||||
| E Webley-Smith | 611 | 3 | 3 | E Hozumi | 77 | 7 | |||||||||||||||||||||
| 3 | E Hozumi | 713 | 6 | 3 | E Hozumi | 77 | 6 | ||||||||||||||||||||
| 8 | M Imanishi | 6 | 2 | 6 | 2 | Kr Plíšková | 65 | 3 | |||||||||||||||||||
| Q | M Kato | 1 | 6 | 2 | 8 | M Imanishi | 7 | 6 | |||||||||||||||||||
| WC | A Inoue | 4 | 1 | M Hibi | 5 | 2 | |||||||||||||||||||||
| M Hibi | 6 | 6 | 8 | M Imanishi | 0 | 1 | |||||||||||||||||||||
 V Wongteanchai | 5 | 2 | 2 | Kr Plíšková | 6 | 6 | |||||||||||||||||||||
 D Jakupović | 7 | 6 | D Jakupović | 2 | 1 | ||||||||||||||||||||||
| A Okuno | 4 | 3 | 2 | Kr Plíšková | 6 | 6 | |||||||||||||||||||||
| 2 | Kr Plíšková | 6 | 6 | ||||||||||||||||||||||||
Erika Sema was the defending champion, having won the event in 2012, but chose not to compete in 2013.
Casey Dellacqua was the defending champion, having won the event in 2013, however she chose not to participate.
Naomi Broady was the defending champion, but lost in the first round to Miharu Imanishi.
This was a new event to the ITF Women's Circuit in 2015.
Olivia Rogowska was the defending champion, but decided to participate in Granby instead.
Madison Brengle is the defending champion, but chose not to participate.
This was a new event on the ITF Women's Circuit.
This was a new event on the ITF Women's Circuit.
Eri Hozumi and Makoto Ninomiya were the defending champions, but both players chose to participate with different partners.
Chang Kai-chen was the defending champion, but chose not to participate.
Nina Stojanović was the defending champion, but lost in the second round to Nao Hibino.
Kiki Bertens and Johanna Larsson were the defending champions, but Bertens chose to compete in Brisbane instead and Larsson chose not to participate this year.
Eri Hozumi was the defending champion, having won the previous edition in 2016, however she lost in the second round to Shérazad Reix.
Ashleigh Barty and Arina Rodionova were the defending champions, having won the previous edition in 2016, however both players chose to participate at the 2018 Miami Open instead.
Han Xinyun and Zhu Lin were the defending champions, but chose not to participate together. Han partnered Vera Zvonareva, but lost in the semifinals to Duan Yingying and Wang Yafan. Zhu played alongside You Xiaodi, but lost in the first round to Prarthana Thombare and Xun Fangying.
Magdaléna Rybáriková was the defending champion, but chose not to participate.
Desirae Krawczyk and Giuliana Olmos were the defending champions, but Krawczyk chose not to participate. Olmos partnered alongside Alexa Guarachi but lost in the first round to Harriet Dart and Heather Watson.
Eri Hozumi and Zhang Shuai were the defending champions, but Zhang chose to compete in Nanchang instead. Hozumi played alongside Makoto Ninomiya, but lost in the quarterfinals to Christina McHale and Valeria Savinykh.
Dayana Yastremska was the defending champion, but withdrew before the tournament began.
Irina-Camelia Begu and Monica Niculescu were the defending champions, but they chose not to participate this year.