| Women's doubles | |
|---|---|
| 2018 Challenger Banque Nationale de Granby | |
| Champions |  Ellen Perez Arina Rodionova |
| Runners-up |  Erika Sema Aiko Yoshitomi |
| Final score | 7–5, 6–4 |
Ellen Perez and Carol Zhao were the defending champions, but Zhao chose not to participate.
Perez partnered alongside Arina Rodionova and successfully defended her title, beating Erika Sema and Aiko Yoshitomi in the final, 7–5, 6–4.
Ellen Perez / Arina Rodionova (champions)
Victoria Rodríguez / 
Erin Routliffe (withdrew)
Manon Arcangioli / Olivia Tjandramulia (withdrew)
Samantha Murray / Akiko Omae (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | E Perez Ar Rodionova | 6 | 6 | ||||||||||||||||||||||||
| WC |  A Arseneault J Bui | 2 | 0 | 1 | E Perez Ar Rodionova | 6 | 6 | ||||||||||||||||||||
| WC | LA Fernandez R Marino | 4 | 6 | [12] | WC | LA Fernandez R Marino | 3 | 3 | |||||||||||||||||||
 C-y Hsu M Zacarías | 6 | 3 | [10] | 1 | E Perez Ar Rodionova | 6 | 6 | ||||||||||||||||||||
| 3 | M Arcangioli O Tjandramulia |  M Bouzková C Branstine | 1 | 3 | |||||||||||||||||||||||
| M Bouzková C Branstine | w/o | M Bouzková C Branstine | w/o | ||||||||||||||||||||||||
 N Kolar  A Riley | 3 | 3 |  G Brescia C Ferrando | ||||||||||||||||||||||||
| G Brescia C Ferrando | 6 | 6 | 1 | E Perez Ar Rodionova | 7 | 6 | |||||||||||||||||||||
| S Carrington E Siska | 2 | 2 | E Sema A Yoshitomi | 5 | 4 | ||||||||||||||||||||||
| Q Gleason A Sharma | 6 | 6 | Q Gleason A Sharma | 3 | 3 | ||||||||||||||||||||||
| WC | C Leduc L Sleeth | 2 | 2 | 4 | S Murray A Omae | 6 | 6 | ||||||||||||||||||||
| 4 | S Murray A Omae | 6 | 6 | 4 | S Murray A Omae | 1 | 4 | ||||||||||||||||||||
| E Sema A Yoshitomi | 65 | 6 | [10] | E Sema A Yoshitomi | 6 | 6 | |||||||||||||||||||||
| H Arakawa N Hanatani | 77 | 3 | [5] | E Sema A Yoshitomi | 77 | 6 | |||||||||||||||||||||
| J Elie J Robinson | 6 | 6 | J Elie J Robinson | 65 | 2 | ||||||||||||||||||||||
| Alt | I Boulais J Failla | 1 | 3 | ||||||||||||||||||||||||
Ema Burgić Bucko and Georgina García Pérez were the defending champions from the event's previous edition as an ITF Women's Circuit tournament, but chose not to participate this year.
Jessica Moore and Storm Sanders were the defending champions, but both players chose to participate with different partners. Sanders played alongside Gabriella Da Silva-Fick, but lost in the first round to Destanee Aiava and Alicia Smith. Moore played alongside Ellen Perez, however they lost in the final to Asia Muhammad and Arina Rodionova, 6–4, 6–4.
Asia Muhammad and Arina Rodionova were the defending champions, but they lost in the final to Alison Bai and Zoe Hives, 4–6, 6–4, [10–8].
Monique Adamczak and Storm Sanders were the defending champions, but Sanders chose not to participate. Adamczak partnered Laura Robson but lost in the semifinals to Jessica Moore and Ellen Perez.
Cristiana Ferrando was the defending champion, but lost in the first round to Maria Sanchez.
Sophie Chang and Alexandra Mueller were the defending champions, but lost in the first round to Luisa Stefani and Renata Zarazúa.
Kiki Bertens and Johanna Larsson were the defending champions, but Bertens chose not to participate. Larsson played alongside Mona Barthel, but lost in the semifinals to Hsieh Shu-ying and Hsieh Su-wei.
Casey Dellacqua was the defending champion having won the previous edition in 2011, however she had retired from professional tennis in April 2018.
Tamara Zidanšek was the defending champion, but chose not to participate.
Alison Bai and Zoe Hives were the defending champions, but lost in the semifinals to Eri Hozumi and Risa Ozaki.
Asia Muhammad and Arina Rodionova were the defending champions, but Muhammad chose not to participate.
Vania King and Laura Robson were the defending champions, but neither player chose to participate.
Jessica Moore and Ellen Perez were the defending champions, but Moore chose to participate at the 2019 St. Petersburg Ladies' Trophy instead. Perez partnered alongside compatriot Arina Rodionova, but lost in the semifinals to Chang Kai-chen and Hsu Ching-wen.
Jessica Moore and Ellen Perez were the defending champions, but chose to participate with different partners. Moore partnered alongside Monique Adamczak but lost in the first round to Viktorija Golubic and Ingrid Neel. Perez partnered alongside Arina Rodionova but lost in the first round to Naiktha Bains and Naomi Broady.
Asia Muhammad and Maria Sanchez were the defending champions, but lost in the semifinals to Ellen Perez and Arina Rodionova.
Ellen Perez and Arina Rodionova were the defending champions, but lost in the quarterfinals to Vania King and Claire Liu.
Ellen Perez and Arina Rodionova were the defending champions, but chose not to participate.
Barbora Krejčíková and Rajeev Ram were the defending champions, but Ram chose not to participate. Krejčíková played alongside Nikola Mektić, and successfully defended the title, defeating Bethanie Mattek-Sands and Jamie Murray in the final 5–7, 6–4, [10–1].
Ellen Perez and Arina Rodionova were the defending champions but Rodionova chose not to participate.
Irina-Camelia Begu and Monica Niculescu were the defending champions, but they chose not to participate this year.