| Doubles | |
|---|---|
| 2015 Suzhou Ladies Open | |
| Champions |  Yang Zhaoxuan Zhang Yuxuan |
| Runners-up | Tian Ran Zhang Kailin |
| Final score | 7–6(7–4), 6–2 |
Chan Chin-wei and Chuang Chia-jung were the defending champions, but chose not to participate.
Yang Zhaoxuan and Zhang Yuxuan won the title, defeating Tian Ran and Zhang Kailin in an all-Chinese final, 7–6(7–4), 6–2.
Carolin Daniels / 
Lidziya Marozava (semifinals)
Ksenia Lykina / 
Emily Webley-Smith (first round) Xu Shilin / You Xiaodi (quarterfinals) Anastasiya Komardina / 
Hiroko Kuwata (quarterfinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | C Daniels L Marozava | 6 | 7 | ||||||||||||||||||||||||
| WC | F Liu Q Zhao | 0 | 5 | 1 | C Daniels L Marozava | 6 | 6 | ||||||||||||||||||||
| A Gai Jia Lu | 2 | 3 | Yan Wang F Xun | 1 | 2 | ||||||||||||||||||||||
| Yan Wang F Xun | 6 | 6 | 1 | C Daniels L Marozava | 2 | 78 | [9] | ||||||||||||||||||||
| 4 | A Komardina H Kuwata | 78 | 4 | [11] | R Tian K Zhang | 6 | 66 | [11] | |||||||||||||||||||
 S-r Lee  S Sharipova | 66 | 6 | [9] | 4 | A Komardina H Kuwata | 3 | 1 | ||||||||||||||||||||
| R Tian K Zhang | 6 | 6 | R Tian K Zhang | 6 | 6 | ||||||||||||||||||||||
| J Chen Yi Zhang | 0 | 2 | R Tian K Zhang | 64 | 2 | ||||||||||||||||||||||
| E Bychkova K Okamura | 4 | 2 | Z Yang Yu Zhang | 77 | 6 | ||||||||||||||||||||||
 K Kučová C Škamlová | 6 | 6 | K Kučová C Škamlová | 6 | 77 | ||||||||||||||||||||||
| Y Li X Sun | 2 | 4 | 3 | S Xu X You | 0 | 61 | |||||||||||||||||||||
| 3 | S Xu X You | 6 | 6 | K Kučová C Škamlová | 4 | 2 | |||||||||||||||||||||
| Z Yang Yu Zhang | 6 | 3 | [10] | Z Yang Yu Zhang | 6 | 6 | |||||||||||||||||||||
I Khromacheva  S Njirić | 2 | 6 | [7] | Z Yang Yu Zhang | 5 | 6 | [10] | ||||||||||||||||||||
Jin Lu  L Zhang | 2 | 6 | [15] | Jin Lu L Zhang | 7 | 1 | [7] | ||||||||||||||||||||
| 2 | K Lykina E Webley-Smith | 6 | 2 | [13] | |||||||||||||||||||||||
Philipp Kohlschreiber was the defending champion but lost to Tommy Haas in the semifinals.
Eventually, Haas won the title after defeating Roger Federer in the final by 7–6(7–5), 6–4.
Chang Kai-chen and Chuang Chia-jung were the defending champions, but Chuang decided not to participate.
Chang played alongside Shuko Aoyama and successfully defended her title by defeating Janette Husárová and Zhang Shuai in the final, 6–7(4–7), 7–6(7–4), [14–12].
Hsieh Su-wei was the defending champion, but lost in the second round to Zhang Shuai.
Garbiñe Muguruza and María Teresa Torró Flor were the defending champions, but decided not to participate.
Monica Niculescu and Klára Zakopalová won the title, defeating Lisa Raymond and Zhang Shuai in the final 6–2, 6–7(5–7), [10–8].
Kimiko Date-Krumm and Casey Dellacqua were the defending champions, but Dellacqua decided not to participate. Date-Krumm played alongside Ajla Tomljanović, but lost to Alla Kudryavtseva and Anastasia Rodionova in the quarterfinals.
Peng Shuai and Zhang Shuai were the defending champions, however Peng chose not to participate. Zhang partnered with Chuang Chia-jung, but lost in the first round to Anastasia Rodionova and Vera Zvonareva.
Chan Hao-ching and Chan Yung-jan won the title, defeating Shuko Aoyama and Tamarine Tanasugarn in the final, 2–6, 6–4, [10–3].
Monica Niculescu was the defending champion, but she lost in the quarterfinals to Yanina Wickmayer.
Andy Murray was the defending champion but chose not to participate this year.
Tomáš Berdych won the title, defeating Guillermo García-López in the final, 6–3, 7–6(9–7).
Wang Yafan and Zhang Kailin were the defending champions, but Wang chose not to participate. Zhang partnered Yang Zhaoxuan, but lost to Han Xinyun and Ye Qiuyu in the quarterfinals.
Tomáš Berdych was the two-time defending champion, but withdrew before the competition began.
Elina Svitolina was the defending champion, but withdrew before the tournament began.
Lesia Tsurenko was the defending champion and successfully defended her title, defeating Stefanie Vögele in the final, 5–7, 7–6(7–2), 6–2.
Zarina Diyas was the defending champion, but lost in the quarterfinals to Zhang Shuai.
Maria Sharapova was the defending champion, but withdrew due to a shoulder injury.
Ashleigh Barty and CoCo Vandeweghe were the defending champions, but Vandeweghe could not participate due to injury. Barty played alongside Victoria Azarenka, but lost in the semifinals to Elise Mertens and Aryna Sabalenka.
Latisha Chan and Ivan Dodig were the defending champions and successfully defended their title, defeating Gabriela Dabrowski and Mate Pavić in a rematch of the 2018 final, 6–1, 7–6(7–5). becoming the first team in the Open era to win back-to-back French Open mixed doubles title.
Andrea Sestini Hlaváčková and Barbora Strýcová were the defending champions, but Sestini Hlaváčková did not participate due to maternity leave. Strýcová played alongside Hsieh Su-wei, but lost in the second round to Jeļena Ostapenko and Dayana Yastremska.
The Yarra Valley Classic is a new addition to the WTA Tour in 2021.
Desirae Krawczyk and Giuliana Olmos were the reigning champions, but they decided not to participate this year.
Květa Peschke and Demi Schuurs were the defending champions, but chose to compete with different partners. Peschke partnered Ellen Perez, and Schuurs partnered Nicole Melichar. Both teams lost to Samantha Stosur and Zhang Shuai; Perez and Peschke did so in the second round, whilst Melichar and Schuurs lost in the quarterfinals.