| Men's singles | |
|---|---|
| 2024 Championnats Banque Nationale de Granby | |
| Champion |  Bu Yunchaokete |
| Runner-up |  Térence Atmane |
| Score | 6–3, 6–7(7–9), 6–4 |
Alexis Galarneau was the defending champion [1] but lost in the first round to Bruno Kuzuhara.
Bu Yunchaokete won the title after defeating Térence Atmane 6–3, 6–7(7–9), 6–4 in the final.
Adam Walton (first round, retired) Térence Atmane (final) Benjamin Bonzi (second round)
Alexis Galarneau (first round) Hugo Grenier (semifinals) Bu Yunchaokete (champion)
Yasutaka Uchiyama (semifinals)
Tristan Boyer (second round)| Semifinals | Final | ||||||||||||
| 5 | Hugo Grenier | 2 | 1 | ||||||||||
| 6 | Bu Yunchaokete | 6 | 6 | ||||||||||
| 6 | Bu Yunchaokete | 6 | 67 | 6 | |||||||||
| 2 | Térence Atmane | 3 | 79 | 4 | |||||||||
| 7 | Yasutaka Uchiyama | 3 | 6 | 4 | |||||||||
| 2 | Térence Atmane | 6 | 3 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | A Walton | 6 | 2r | ||||||||||||||||||||||||
| Alt |  A Andrade | 4 | 5 | Alt | A Andrade | 6 | 6 | ||||||||||||||||||||
| WC | V Pospisil | 4 | 4 | WC | J Boulais | 3 | 1 | ||||||||||||||||||||
| WC | J Boulais | 6 | 6 | Alt | A Andrade | 63 | 5 | ||||||||||||||||||||
 JP Ficovich | 6 | 6 | 5 | H Grenier | 77 | 7 | |||||||||||||||||||||
| Alt |  B Bicknell | 1 | 3 | JP Ficovich | 5 | 3 | |||||||||||||||||||||
| C Chidekh | 3 | 69 | 5 | H Grenier | 7 | 6 | |||||||||||||||||||||
| 5 | H Grenier | 6 | 711 | 5 | H Grenier | 2 | 1 | ||||||||||||||||||||
| 4 | A Galarneau | 7 | 5 | 1 | 6 | Y Bu | 6 | 6 | |||||||||||||||||||
| Q | B Kuzuhara | 5 | 7 | 6 | Q | B Kuzuhara | 6 | 6 | |||||||||||||||||||
 M Lajal | 6 | 5 | 3 | Q | R Noguchi | 3 | 4 | ||||||||||||||||||||
| Q | R Noguchi | 3 | 7 | 6 | Q | B Kuzuhara | 6 | 4 | 2 | ||||||||||||||||||
| Q | K Uchida | 3 | 77 | 1 | 6 | Y Bu | 4 | 6 | 6 | ||||||||||||||||||
| P Sekulic | 6 | 62 | 6 | P Sekulic | 4 | 0 | |||||||||||||||||||||
 R Pacheco Méndez | 66 | 5 | 6 | Y Bu | 6 | 6 | |||||||||||||||||||||
| 6 | Y Bu | 78 | 7 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | Y Uchiyama | 4 | 7 | 6 | |||||||||||||||||||||||
| L Draxl | 6 | 5 | 4 | 7 | Y Uchiyama | 6 | 3 | 6 | |||||||||||||||||||
| WC | Taha Baadi | 6 | 4 | 2 |  H Habib | 2 | 6 | 3 | |||||||||||||||||||
| H Habib | 3 | 6 | 6 | 7 | Y Uchiyama | 5 | 6 | 77 | |||||||||||||||||||
| S Shimabukuro | 6 | 6 | S Shimabukuro | 7 | 4 | 64 | |||||||||||||||||||||
| Arthur Gea | 1 | 4 | S Shimabukuro | 710 | 77 | ||||||||||||||||||||||
| B Holt | 3 | 64 | 3 | B Bonzi | 68 | 65 | |||||||||||||||||||||
| 3 | B Bonzi | 6 | 77 | 7 | Y Uchiyama | 3 | 6 | 4 | |||||||||||||||||||
| 8 | T Boyer | 6 | 4 | 7 | 2 | T Atmane | 6 | 3 | 6 | ||||||||||||||||||
| Y Shimizu | 1 | 6 | 5 | 8 | T Boyer | 4 | 77 | 2 | |||||||||||||||||||
 T-l Wu | 7 | 77 | T-l Wu | 6 | 65 | 6 | |||||||||||||||||||||
| Q | C Harper | 5 | 62 | T-l Wu | 1 | 1 | |||||||||||||||||||||
| Q | S Kozlov | 1 | 2 | 2 | T Atmane | 6 | 6 | ||||||||||||||||||||
 N Mejía | 6 | 6 | N Mejía | 3 | 5 | ||||||||||||||||||||||
| Q | Patrick Maloney | 3 | 4 | 2 | T Atmane | 6 | 7 | ||||||||||||||||||||
| 2 | T Atmane | 6 | 6 | ||||||||||||||||||||||||
Stefano Travaglia was the defending champion but chose not to defend his title.
Norbert Gombos was the defending champion but chose not to defend his title.
Arthur Rinderknech was the defending champion but chose not to defend his title.
Maxime Cressy was the defending champion but chose not to defend his title.
Wu Yibing was the defending champion but chose not to defend his title.
Jay Clarke was the defending champion but lost in the second round to Térence Atmane.
Andrew Harris and Christian Harrison were the defending champions but only Harris chose to defend his title, partnering Alex Bolt. Harris lost in the first round to Yuta Shimizu and Yasutaka Uchiyama.
Facundo Mena was the defending champion but chose not to defend his title.
Roman Safiullin was the defending champion but chose not to defend his title.
Gabriel Diallo was the defending champion but chose not to defend his title.
Dan Evans defeated Tallon Griekspoor in the final, 7–5, 6–3 to win the men's singles tennis title at the 2023 Washington Open. It was his second ATP Tour singles title.
Marcelo Arévalo and Jean-Julien Rojer defeated Rajeev Ram and Joe Salisbury in the final, 6–3, 6–1 to win the men's doubles tennis title at the 2023 Canadian Open. It was Arévalo's first ATP Tour Masters 1000 title, and Rojer's fourth.
Jordan Thompson was the defending champion but chose not to defend his title.
Zachary Svajda was the defending champion and successfully defended his title after defeating Adam Walton 6–2, 6–2 in the final.
Michael Mmoh was the defending champion but chose not to defend his title.
Dominik Koepfer was the defending champion but chose not to defend his title.
Giovanni Mpetshi Perricard was the defending champion and successfully defended his title after defeating Adam Walton 6–3, 6–3 in the final.
Mark Lajal was the defending champion but chose not to defend his title.
Nicolas Moreno de Alboran was the defending champion but chose not to defend his title.
Ryan Peniston was the defending champion but lost in the first round to Brandon Holt.