| Doubles | |
|---|---|
| 2018 Open BNP Paribas Banque de Bretagne | |
| Champions |  Ken Skupski Neal Skupski |
| Runners-up |  Sander Gillé Joran Vliegen |
| Final score | 6–3, 3–6, [10–7] |
Mikhail Elgin and Igor Zelenay were the defending champions but chose not to defend their title.
Ken and Neal Skupski won the title after defeating Sander Gillé and Joran Vliegen 6–3, 3–6, [10–7] in the final.
Ken Skupski / Neal Skupski (champions)
Sander Arends / 
Antonio Šančić (semifinals)
Romain Arneodo / 
Hugo Nys (semifinals) Sander Gillé / Joran Vliegen (final)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | K Skupski N Skupski | 6 | 6 | ||||||||||||||||||||||||
| I Sabanov M Sabanov | 1 | 3 | 1 | K Skupski N Skupski | 6 | 77 | |||||||||||||||||||||
| S Clayton D Pel | 77 | 6 | S Clayton D Pel | 4 | 65 | ||||||||||||||||||||||
| Alt |  A Arnaboldi  T Gabashvili | 62 | 1 | 1 | K Skupski N Skupski | 77 | 3 | [10] | |||||||||||||||||||
| 3 | R Arneodo H Nys | 7 | 69 | [10] | 3 | R Arneodo H Nys | 62 | 6 | [8] | ||||||||||||||||||
 A Mies J O'Mara | 5 | 711 | [3] | 3 | R Arneodo H Nys | 6 | 6 | ||||||||||||||||||||
 R Junaid  T Matsui | 7 | 2 | [10] | R Junaid T Matsui | 1 | 2 | |||||||||||||||||||||
| M Draganja T Draganja | 5 | 6 | [7] | 1 | K Skupski N Skupski | 6 | 3 | [10] | |||||||||||||||||||
A De Greef  R Ojeda Lara | 3 | 4 | 4 | S Gillé J Vliegen | 3 | 6 | [7] | ||||||||||||||||||||
| WC | G Barrère J Eysseric | 6 | 6 | WC | G Barrère J Eysseric | 4 | 3 | ||||||||||||||||||||
 S Balaji V Vardhan | 65 | 3 | 4 | S Gillé J Vliegen | 6 | 6 | |||||||||||||||||||||
| 4 | S Gillé J Vliegen | 77 | 6 | 4 | S Gillé J Vliegen | 6 | 6 | ||||||||||||||||||||
 M Bašić A Šetkić | 6 | 3 | [10] | 2 | S Arends A Šančić | 1 | 4 | ||||||||||||||||||||
| WC |  P Tsitsipas S Tsitsipas | 4 | 6 | [7] | M Bašić A Šetkić | 4 | 0 | ||||||||||||||||||||
| M Bourgue D Guez | 2 | S Arends A Šančić | 6 | 6 | |||||||||||||||||||||||
| 2 | S Arends A Šančić | w/o | |||||||||||||||||||||||||
Alexander Satschko and Simon Stadler were the defending champions but only Satschko chose to defend his title, partnering Gero Kretschmer. Satschko lost in the quarterfinals to Sander Gillé and Joran Vliegen.
Federico Gaio and Stefano Napolitano were the defending champions but only Napolitano chose to defend his title, partnering Salvatore Caruso. Napolitano withdrew in the semifinals.
Evgeny Donskoy and Mikhail Elgin were the defending champions but chose not to defend their title.
Roman Jebavý and Igor Zelenay were the defending champions but chose not to defend their title.
James Cerretani and Antal van der Duim were the defending champions but only Cerretani chose to defend his title, partnering Nicholas Monroe. Cerretani lost in the first round to Ruben Bemelmans and Jonathan Eysseric.
Ken and Neal Skupski were the defending champions but chose not to defend their title.
Sander Arends and Antonio Šančić were the defending champions but only Šančić chose to defend his title, partnering Purav Raja. Šančić lost in the finals to Sander Gillé and Joran Vliegen.
Facundo Bagnis and Ariel Behar were the defending champions but only Bagnis chose to defend his title, partnering Franco Agamenone. Bagnis lost in the first round to Sander Gillé and Joran Vliegen.
Guido Andreozzi and Ariel Behar were the defending champions but only Behar chose to defend his title, partnering Thiago Monteiro. Behar lost in the first round to David Pérez Sanz and Oriol Roca Batalla.
Matteo Berrettini and Daniele Bracciali were the defending champions, but chose not to participate this year.
Roman Jebavý and Andrés Molteni were the defending champions, but chose not to participate together. Jebavý played alongside Matwé Middelkoop but lost in the semifinals to Philipp Oswald and Filip Polášek. Molteni partnered Leonardo Mayer but lost in the first round to Oliver Marach and Jürgen Melzer.
Sander Gillé and Joran Vliegen were the defending champions but lost in the first round to Sander Arends and David Pel.
Divij Sharan and Igor Zelenay were the defending champions, but both players chose not to participate. Sharan is instead participating at the Cologne tournament and Zelenay at the Sardinia tournament.
Kevin Krawietz and Andreas Mies were the defending champions but this year they decided to participate in the Cologne event instead.
Nikola Mektić and Jürgen Melzer were the defending champions, but Mektić chose not to participate.
The Murray River Open was a new addition to the ATP Tour in 2021.
Ivan Dodig and Filip Polášek defeated defending champions Rajeev Ram and Joe Salisbury in the final, 6–3, 6–4, to win the men's doubles tennis title at the 2021 Australian Open. By winning the title, Dodig and Polášek won their first Grand Slam doubles title as a team. The victory also earned Polášek his first major title and made him the second Slovak player to win one after compatriot Daniela Hantuchová.
Sander Gillé and Joran Vliegen were the reigning champions from when the tournament was last held in 2019, but chose not to defend their title.
Wesley Koolhof and Neal Skupski defeated Ariel Behar and Gonzalo Escobar in the final, 7–6(7–5), 6–4, to win the men's doubles tennis title at the 2022 Adelaide International 2.
Aslan Karatsev and Andrey Rublev were the defending champions but chose not to defend their title.