| Singles | |
|---|---|
| 2012 Kurume Best Amenity International Women's Tennis | |
| Champion |  Zheng Saisai |
| Runner-up |  Monique Adamczak |
| Final score | 7–5, 6–2 |
Rika Fujiwara was the defending champion, but chose not to participate.
Zheng Saisai won the title, defeating Monique Adamczak in the final, 7–5, 6–2.
Marta Sirotkina (second round)
Varatchaya Wongteanchai (first round) Wang Qiang (quarterfinals)
Akiko Omae (first round) Monique Adamczak (final) Junri Namigata (semifinals) Zheng Saisai (champion) Aiko Nakamura (quarterfinals)| Semifinals | Final | ||||||||||||
| 7 | Zheng Saisai | 6 | 6 | ||||||||||
 Maria Abramović | 3 | 2 | |||||||||||
| 7 | Zheng Saisai | 7 | 6 | ||||||||||
| 5 | Monique Adamczak | 5 | 2 | ||||||||||
| 5 | Monique Adamczak | 2 | 6 | 6 | |||||||||
| 6 | Junri Namigata | 6 | 4 | 4 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Sirotkina | 78 | 6 | ||||||||||||||||||||||||
| K Lykina | 66 | 4 | 1 | M Sirotkina | 66 | 2 | |||||||||||||||||||||
| Q |  S-j Kim | 6 | 5 | 2 |  Z Diyas | 78 | 6 | ||||||||||||||||||||
| Z Diyas | 1 | 7 | 6 | Z Diyas | 6 | 0 | 4 | ||||||||||||||||||||
 M South | 6 | 6 | 7 | S Zheng | 3 | 6 | 6 | ||||||||||||||||||||
| S Aoyama | 1 | 2 | M South | 3 | 5 | ||||||||||||||||||||||
| Q |  J Jegiołka | 3 | 3 | 7 | S Zheng | 6 | 7 | ||||||||||||||||||||
| 7 | S Zheng | 6 | 6 | 7 | S Zheng | 6 | 6 | ||||||||||||||||||||
| 4 | A Omae | 0 | 6 | 3 | M Abramović | 3 | 2 | ||||||||||||||||||||
| WC | R Sawayanagi | 6 | 4 | 6 | WC | R Sawayanagi | 2 | 0 | |||||||||||||||||||
| M Abramović | 4 | 6 | 6 | M Abramović | 6 | 6 | |||||||||||||||||||||
| WC | A Yonemura | 6 | 1 | 4 | M Abramović | 77 | 4 | 6 | |||||||||||||||||||
| Q | M Ninomiya | 7 | 6 | 8 | A Nakamura | 65 | 6 | 4 | |||||||||||||||||||
 L Zhang | 5 | 4 | Q | M Ninomiya | 77 | 1 | 1 | ||||||||||||||||||||
| Q | K Ito | 0 | 2 | 8 | A Nakamura | 64 | 6 | 6 | |||||||||||||||||||
| 8 | A Nakamura | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | M Adamczak | 6 | 6 | ||||||||||||||||||||||||
 T Arefyeva | 2 | 4 | 5 | M Adamczak | 6 | 6 | |||||||||||||||||||||
| E Takao | 6 | 6 | E Takao | 2 | 2 | ||||||||||||||||||||||
| Y Xu | 1 | 0 | 5 | M Adamczak | 6 | 6 | |||||||||||||||||||||
| E Webley-Smith | 6 | 6 | 3 | Q Wang | 3 | 3 | |||||||||||||||||||||
| T Moore | 2 | 4 | E Webley-Smith | 3 | 4 | ||||||||||||||||||||||
| X Han | 3 | 2 | 3 | Q Wang | 6 | 6 | |||||||||||||||||||||
| 3 | Q Wang | 6 | 6 | 5 | M Adamczak | 2 | 6 | 6 | |||||||||||||||||||
| 6 | J Namigata | 6 | 6 | 6 | J Namigata | 6 | 4 | 4 | |||||||||||||||||||
| WC | Y Miyazaki | 2 | 3 | 6 | J Namigata | 5 | 6 | 78 | |||||||||||||||||||
| S Murray | 4 | 3 |  J Pegula | 7 | 4 | 66 | |||||||||||||||||||||
| J Pegula | 6 | 6 | 6 | J Namigata | 6 | 6 | |||||||||||||||||||||
 N Hofmanova | 6 | 5 | 6 | N Hofmanova | 2 | 2 | |||||||||||||||||||||
| WC | Y Nakano | 1 | 7 | 3 | N Hofmanova | 2 | 6 | 7 | |||||||||||||||||||
| S Sun | 6 | 6 | S Sun | 6 | 4 | 5 | |||||||||||||||||||||
| 2 | V Wongteanchai | 2 | 3 | ||||||||||||||||||||||||
Martina Hingis was the defending champion, but chose not to participate that year.
Shuko Aoyama and Rika Fujiwara were the defending champions, but Fujiwara chose not to participate. Aoyama paired up with Junri Namigata but lost in the first round to Chan Chin-wei and Hsu Wen-hsin.
Serena Williams was the defending champion, and successfully defended her title, defeating lucky loser Coco Vandeweghe in the final, 7–5, 6–3. It was the first all-American final on the WTA Tour since the 2009 WTA Tour Championships, and the first on American soil since Los Angeles in 2004.
Kimiko Date-Krumm was the defending champion, having won the event in 2012, but retired in the second round against qualifier An-Sophie Mestach, who went on to win the tournament. She defeated Wang Qiang in the final, 1–6, 6–3, 6–0.
Casey Dellacqua was the defending champion, having won the event in 2012, but decided not to defend her title the year after.
Ksenia Lykina and Emily Webley-Smith were the defending champions, but both players chose not to participate.
The tournament in Nanchang was a new addition to the WTA 125K series.
Lyudmyla Kichenok and Nadiia Kichenok were the defending champions, but chose to participate in Auckland instead.
Vania King and Monica Niculescu won the title, defeating Xu Yifan and Zheng Saisai in the final, 6–1, 6–4.
Zhang Kailin was the defending champion, but lost in the first round to Xun Fangying.
Natela Dzalamidze and Veronika Kudermetova were the defending champions, but Dzalamidze chose not to participate. Kudermetova successfully defended her title, this time alongside Aryna Sabalenka, defeating Monique Adamczak and Naomi Broady 2–6, 7–6(7–5), [10–6] in the final.
Donna Vekić was the defending champion, but lost in the semifinals to Johanna Konta in a rematch of the previous year's final.
Irina-Camelia Begu and Sara Errani were the defending champions, but Errani is serving a doping suspension. Begu played alongside Barbora Krejčíková, but they lost in the quarterfinals to Han Xinyun and Darija Jurak.
Carol Zhao was the defending champion, but lost to Ivana Jorović in the quarterfinals.
Alexa Guarachi and Desirae Krawczyk were the defending champions, but Krawczyk chose not to participate. Guarachi played alongside Erin Routliffe, but lost in the first round to Cornelia Lister and Renata Voráčová.
Zheng Saisai was the defending champion, but lost in the quarterfinals to Ajla Tomljanović.
Duan Yingying and Wang Yafan were the defending champions, but Wang chose to compete in Nanchang instead. Duan played alongside Zheng Saisai, but lost in the first round to Lesley Pattinama Kerkhove and Bibiane Schoofs.
Peng Shuai and Yang Zhaoxuan were the defending champions, but Yang chose to compete in Brisbane instead. Peng partnered Zhang Shuai, but lost in the first round to Jiang Xinyu and Tang Qianhui.
Victoria Azarenka and Zheng Saisai were the defending champions, but Azarenka chose not to participate and Zheng chose to compete in Doha instead.
Asia Muhammad and Maria Sanchez were the defending champions, but Muhammad chose to compete in the Indian Wells 125K event instead. Sanchez played alongside Monique Adamczak, but lost in the first round to Marie Bouzková and Renata Voráčová.
Zheng Saisai was the reigning champion but chose not to participate.