| Champ: |  Marcel Granollers Horacio Zeballos |
| Runner: |  Rajeev Ram Joe Salisbury |
| Score: | 6–2, 7–6(7–4) |
See main article: 2024 National Bank Open.
Marcel Granollers and Horacio Zeballos defeated Rajeev Ram and Joe Salisbury in the final, 6–2, 7–6(7–4) to win the men's doubles tennis title at the 2024 Canadian Open.[1]
Marcelo Arévalo and Jean-Julien Rojer were the defending champions,[2] but chose not to participate together. Arévalo partnered Mate Pavić, but lost in the semifinals to Granollers and Zeballos. Rojer partnered Ivan Dodig, but lost in the first round to Daniil Medvedev and Roman Safiullin.
Granollers and Zeballos retained the ATP No. 1 doubles ranking by winning their first match. Matthew Ebden was also in contention for the top ranking at the beginning of the tournament.
The top four seeds received a bye into the second round.
The following are the seeded teams. Seedings are based on ATP rankings as of 29 July 2024.
Sadio Doumbia / Fabien Reboul → replaced by Nathaniel Lammons / Jackson Withrow Lloyd Glasspool / Nikola Mektić
India
Australia
Italy
Mexico
Finland
New Zealand
Poland
Belgium