| Men's doubles | |
|---|---|
| 2023 Championnats Banque Nationale de Granby | |
| Champions |  Christian Harrison  Miķelis Lībietis |
| Runners-up |  Tristan Schoolkate Adam Walton |
| Score | 6–4, 6–3 |
Julian Cash and Henry Patten were the defending champions [1] but chose not to defend their title.
Christian Harrison and Miķelis Lībietis won the title after defeating Tristan Schoolkate and Adam Walton 6–4, 6–3 in the final.
Ruben Gonzales / Alex Lawson (first round) Hunter Reese / 
Artem Sitak (first round)
Purav Raja / Divij Sharan (quarterfinals) Ezekiel Clark / Alfredo Perez (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | R Gonzales A Lawson | 3 | 4 | ||||||||||||||||||||||||
 S Duncan  K Stevenson | 6 | 6 | S Duncan K Stevenson | 2 | 2 | ||||||||||||||||||||||
| T Schoolkate A Walton | 7 | 6 | T Schoolkate A Walton | 6 | 6 | ||||||||||||||||||||||
O Jasika  H Moriya | 5 | 1 | T Schoolkate A Walton | 6 | 6 | ||||||||||||||||||||||
| 3 | P Raja D Sharan | 1 | Alt | J Boulais J Trotter | 0 | 3 | |||||||||||||||||||||
 M Janvier  M Jaziri | 0r | 3 | P Raja D Sharan | 6 | 65 | [5] | |||||||||||||||||||||
| Alt | J Boulais J Trotter | 7 | 6 | Alt | J Boulais J Trotter | 4 | 77 | [10] | |||||||||||||||||||
| WC | Taha Baadi Nicaise Muamba | 5 | 1 | T Schoolkate A Walton | 4 | 3 | |||||||||||||||||||||
| PR | D Kudla T-S Kwiatkowski | 7 | 1 | [6] | C Harrison M Lībietis | 6 | 6 | ||||||||||||||||||||
 C Sinclair D Sweeny | 5 | 6 | [10] | C Sinclair D Sweeny | 1 | 1 | |||||||||||||||||||||
| C Harrison M Lībietis | 6 | 6 | C Harrison M Lībietis | 6 | 6 | ||||||||||||||||||||||
| 4 | Ezekiel Clark A Perez | 0 | 2 | C Harrison M Lībietis | 6 | 6 | |||||||||||||||||||||
| Alt | N Chappell Colin Markes | 1 | 6 | [12] | Alt | N Chappell C Markes | 3 | 4 | |||||||||||||||||||
| Mac Kiger B Sigouin | 6 | 3 | [10] | Alt | N Chappell C Markes | 6 | 6 | ||||||||||||||||||||
| J McCabe A Rai | 6 | 2 | [10] | J McCabe A Rai | 2 | 4 | |||||||||||||||||||||
| 2 | H Reese A Sitak | 4 | 6 | [8] | |||||||||||||||||||||||
The 1999 Open Gaz de France singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.
Serena Williams defeated Steffi Graf in the final, 6–3, 3–6, 7–5 to win the women's singles tennis title at the 1999 Indian Wells Open. It was the second and last time that the two would contest a professional match.
Nathalie Tauziat defeated Barbara Schett in the final, 2–6, 6–4, 6–1 to win the women's singles tennis title at the 1999 Kremlin Cup.
Juan Carlos Ferrero was the defending champion; however, he chose not to defend his title due to knee and wrist injuries.
Nicolás Almagro claimed the title by defeating Alexandr Dolgopolov 6–3, 7–6(3) in the final.
Anastasia Pavlyuchenkova was the defending champion and defended her title by defeating Jelena Janković 2–6, 6–2, 6–3 in the final.
Anastasia Myskina was the defending champion, but chose not to participate that year.
Mardy Fish was the defending champion, and in a repeat of the previous year's final, he successfully defended his title by defeating his compatriot John Isner after dropping the opening set. This time the score was 3–6, 7–6(8–6), 6–2.
Pete Sampras was the defending champion and successfully defended his title, beating Cédric Pioline 7–6(7–5), 1–6, 7–5 in the final.
Jonas Björkman and Max Mirnyi were the defending champions.
Sandrine Testud was the defending champion, but was defeated by Martina Hingis in the semifinals.
The 1999 Wismilak International doubles was the doubles event of the fifth edition of the most prestigious women's tennis tournament held in Southeast Asia. It was not played the previous year, so there was no defending champion.
Jana Novotná was the defending champion, but she retired from tennis earlier in the year.
Bob Bryan and Mike Bryan were the defending champions and successfully defended their title, defeating Vasek Pospisil and Jack Sock in the final, 6–3, 1–6, [10–8].
Mark Knowles and Daniel Nestor were the defending champions and successfully defended their title, defeating Leander Paes and Nenad Zimonjić 3–6, 6–3, 6–2 in the final. It was the 39th doubles title for Knowles and the 41st doubles title for Nestor, in their respective careers. It was also the 4th and final title of the year for the pair.
Vera Zvonareva was the defending champion and successfully defended her title by defeating Meghann Shaughnessy 7–6(7–3), 6–2 in the final.
Silvia Farina Elia was the defending champion, but lost in the semifinals to Lindsay Davenport. Claudine Schaul won her first WTA singles title, defeating Davenport in the final 2–6, 6–0, 6–3.
Silvia Farina Elia was the two-time defending champion, and successfully defended her title, defeating Karolina Šprem in the final, 6–3, 4–6, 6–4.
Magüi Serna was the defending champion and successfully defended her title, by defeating qualifier Julia Schruff 6–4, 6–1 in the final.
Kim Clijsters was the defending champion and successfully defended her title, by defeating Magdalena Maleeva 6–1, 6–2 in the final.
Andre Agassi was the defending champion and successfully defended his title, by defeating Petr Korda 6–3, 6–4 in the final.