| Men's doubles | |
|---|---|
| 2018 Rogers Cup | |
| Champions |  Henri Kontinen  John Peers |
| Runners-up |  Raven Klaasen  Michael Venus |
| Final score | 6–2, 6–7(7–9), [10–6] |
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, [1] but lost in the second round to Kevin Anderson and Novak Djokovic.
Henri Kontinen and John Peers won the title, defeating Raven Klaasen and Michael Venus in the final, 6–2, 6–7(7–9), [10–6].
All seeds received a bye into the second round.
Oliver Marach / 
Mate Pavić (semifinals) Henri Kontinen / John Peers (champions)
Pierre-Hugues Herbert / Nicolas Mahut (second round)
Mike Bryan / Jack Sock (quarterfinals)
Łukasz Kubot / 
Marcelo Melo (second round)
Jamie Murray / Bruno Soares (second round)
Jean-Julien Rojer / 
Horia Tecău (quarterfinals)
Juan Sebastián Cabal / Robert Farah (second round)| Semifinals | Final | ||||||||||||
| 1 | Oliver Marach Mate Pavić | 6 | 65 | [3] | |||||||||
| Raven Klaasen Michael Venus | 4 | 77 | [10] | ||||||||||
| Raven Klaasen Michael Venus | 2 | 79 | [6] | ||||||||||
| 2 | Henri Kontinen John Peers | 6 | 67 | [10] | |||||||||
| Nikola Mektić Alexander Peya | 62 | 6 | [10] | ||||||||||
| 2 | Henri Kontinen John Peers | 77 | 4 | [12] | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | O Marach M Pavić | w/o | |||||||||||||||||||||||||
 G Dimitrov  D Goffin | 77 | 6 | G Dimitrov D Goffin | ||||||||||||||||||||||||
| Alt | J Chardy L Pouille | 65 | 4 | 1 | O Marach M Pavić | 65 | 7 | [10] | |||||||||||||||||||
 B McLachlan M Middelkoop | 5 | 6 | [10] | 7 | J-J Rojer H Tecău | 77 | 5 | [6] | |||||||||||||||||||
| B Ćorić R Haase | 7 | 3 | [7] | B McLachlan M Middelkoop | 3 | 6 | [5] | ||||||||||||||||||||
| 7 | J-J Rojer H Tecău | 6 | 3 | [10] | |||||||||||||||||||||||
| 1 | O Marach M Pavić | 6 | 65 | [3] | |||||||||||||||||||||||
| R Klaasen M Venus | 4 | 77 | [10] | ||||||||||||||||||||||||
| 4 | M Bryan J Sock | 77 | 6 | ||||||||||||||||||||||||
 F López M López | 66 | 6 | [10] | F López M López | 63 | 3 | |||||||||||||||||||||
| WC |  D Nestor V Pospisil | 78 | 2 | [6] | 4 | M Bryan J Sock | 65 | 4 | |||||||||||||||||||
| R Klaasen M Venus | 6 | 6 | R Klaasen M Venus | 77 | 6 | ||||||||||||||||||||||
| Alt | A Sitak  S Tsitsipas | 4 | 4 | R Klaasen M Venus | 6 | 5 | [11] | ||||||||||||||||||||
| 5 | Ł Kubot M Melo | 3 | 7 | [9] | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | J Murray B Soares | 4 | 4 | ||||||||||||||||||||||||
| N Mektić A Peya | 6 | 6 | N Mektić A Peya | 6 | 6 | ||||||||||||||||||||||
| I Dodig N Kyrgios | 2 | 2 | N Mektić A Peya | 7 | 7 | ||||||||||||||||||||||
K Anderson  N Djokovic | 6 | 6 | K Anderson N Djokovic | 5 | 5 | ||||||||||||||||||||||
| WC | F Auger-Aliassime D Shapovalov | 3 | 2 | K Anderson N Djokovic | 4 | 6 | [10] | ||||||||||||||||||||
| 3 | P-H Herbert N Mahut | 6 | 4 | [7] | |||||||||||||||||||||||
| N Mektić A Peya | 62 | 6 | [10] | ||||||||||||||||||||||||
| 2 | H Kontinen J Peers | 77 | 4 | [12] | |||||||||||||||||||||||
| 8 | JS Cabal R Farah | 5 | 6 | [8] | |||||||||||||||||||||||
| Alt | S Querrey R Ram | 77 | 6 | Alt | S Querrey R Ram | 7 | 4 | [10] | |||||||||||||||||||
 M Cecchinato  D Džumhur | 64 | 3 | Alt | S Querrey R Ram | 67 | 3 | |||||||||||||||||||||
P Carreño Busta  J Sousa | 4 | 6 | [10] | 2 | H Kontinen J Peers | 79 | 6 | ||||||||||||||||||||
| É Roger-Vasselin F Verdasco | 6 | 2 | [4] | P Carreño Busta J Sousa | 5 | 1 | |||||||||||||||||||||
| 2 | H Kontinen J Peers | 7 | 6 | ||||||||||||||||||||||||
Julien Benneteau and Édouard Roger-Vasselin were the defending champions, but did not participate due to Benneteau's injury.
Jean-Julien Rojer and Horia Tecău were the defending champions, but lost in the first round to Jonathan Marray and Adil Shamasdin.
Ivan Dodig and Marcelo Melo were the defending champions, but Dodig chose not to participate this year. Melo played alongside Vasek Pospisil, but lost to John Peers and Henri Kontinen in the semifinals.
Henri Kontinen and John Peers were the defending champions, but lost in the first round to Kei Nishikori and Dominic Thiem.
Thanasi Kokkinakis and Jordan Thompson won the title, defeating Gilles Müller and Sam Querrey, 7–6(9–7), 6–4.
Jamie Murray and Bruno Soares were the defending champions, but lost in the first round to Sam Querrey and Donald Young.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but lost in the second round to Novak Djokovic and Viktor Troicki.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but withdrew before their second round match due to Herbert's leg injury.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but lost in the semifinals to Feliciano López and Marc López.
Bob and Mike Bryan were the defending champions, but lost in the semifinals to Pierre-Hugues Herbert and Nicolas Mahut.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but lost in the second round to Jay Clarke and Marcus Willis.
Pierre-Hugues Herbert and Nicolas Mahut were the two-time defending champions, but retired in the first round against Marcus Daniell and Marcelo Demoliner.
Ivan Dodig and Marcelo Melo were the defending champions, but chose not to participate together. Melo played alongside Łukasz Kubot, but lost in the second round to Fabrice Martin and Édouard Roger-Vasselin. Dodig teamed up with Rohan Bopanna, but lost in the final to Pierre-Hugues Herbert and Nicolas Mahut, 4–6, 6–3, [6–10].
Ivan Dodig and Marcelo Melo were the defending champions, but chose not to participate together. Dodig teamed up with Rohan Bopanna, but lost in the quarterfinals to Melo who partnered Łukasz Kubot. Kubot and Melo lost in the semifinals to Jamie Murray and Bruno Soares.
Henri Kontinen and John Peers were the defending champions, but lost in the quarterfinals to Ivan Dodig and Marcel Granollers.
Raven Klaasen and Rajeev Ram were the defending champions, but chose not to participate together. Klaasen played alongside Michael Venus, but lost in the second round to Ivan Dodig and Ram. Dodig and Ram lost in the quarterfinals to John Isner and Jack Sock.
Pierre-Hugues Herbert and Nicolas Mahut were the defending champions, but Herbert chose not to participate this year. Mahut played alongside Édouard Roger-Vasselin, but they lost in the second round to Philipp Kohlschreiber and Fernando Verdasco.
Pierre-Hugues Herbert and Nicolas Mahut won the men's doubles tennis title at the 2019 Australian Open, defeating Henri Kontinen and John Peers in the final, 6–4, 7–6(7–1). They are the first French players to achieve the Career Grand Slam as well as only the 8th Men's Doubles pair to achieve this feat.
John Isner and Jack Sock were the defending champions, but Sock could not participate due to injury. Isner played alongside Sam Querrey, but lost in the first round to Pierre-Hugues Herbert and Nicolas Mahut.
Jérémy Chardy and Henri Kontinen were the defending champions, but Chardy chose not to participate this year.
Ivan Dodig and Édouard Roger-Vasselin were the defending champions from when the tournament was last held in 2019, but Dodig decided not to participate this year. Roger-Vasselin played alongside Henri Kontinen but lost in the quarterfinals to Matthew Ebden and John-Patrick Smith.