| Doubles | |
|---|---|
| 2021 Open Quimper Bretagne | |
| Champions |  Grégoire Barrère Albano Olivetti |
| Runners-up |  James Cerretani  Marc-Andrea Hüsler |
| Score | 5–7, 7–6(9–7), [10–8] |
Andrey Golubev and Aleksandr Nedovyesov were the defending champions [1] but chose not to defend their title.
Grégoire Barrère and Albano Olivetti won the title after defeating James Cerretani and Marc-Andrea Hüsler 5–7, 7–6(9–7), [10–8] in the final.
André Göransson / 
David Pel (first round) Nathaniel Lammons / Jackson Withrow (quarterfinals) Sander Arends / 
Roman Jebavý (first round)
Karol Drzewiecki / Szymon Walków (first round)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Göransson D Pel | 6 | 3 | [5] | |||||||||||||||||||||||
| B Nakashima H Reese | 3 | 6 | [10] | B Nakashima H Reese | 6 | 6 | |||||||||||||||||||||
| M Bourgue L Pouille | 6 | 4 | [10] | M Bourgue L Pouille | 2 | 2 | |||||||||||||||||||||
| WC | J Eysseric E Furness | 2 | 6 | [8] | B Nakashima H Reese | 2 | 4 | ||||||||||||||||||||
| 4 | K Drzewiecki S Walków | 60 | 2 | J Cerretani M-A Hüsler | 6 | 6 | |||||||||||||||||||||
| M Guinard A Rinderknech | 77 | 6 | M Guinard A Rinderknech | 3 | 3 | ||||||||||||||||||||||
| D Kudla R Lindstedt | 7 | 4 | [5] | J Cerretani M-A Hüsler | 6 | 6 | |||||||||||||||||||||
| J Cerretani M-A Hüsler | 5 | 6 | [10] | J Cerretani M-A Hüsler | 7 | 67 | [8] | ||||||||||||||||||||
| S Doumbia F Reboul | 6 | 77 | G Barrère A Olivetti | 5 | 79 | [10] | |||||||||||||||||||||
| WC | B Bonzi T Lamasine | 3 | 63 | S Doumbia F Reboul | 6 | 6 | |||||||||||||||||||||
 J Rodionov L Rosol | 4 | 716 | [12] | J Rodionov L Rosol | 4 | 3 | |||||||||||||||||||||
| 3 | S Arends R Jebavý | 6 | 614 | [10] | S Doumbia F Reboul | 4 | 2 | ||||||||||||||||||||
| WC | A Cazaux H Gaston | 6 | 2 | [6] | G Barrère A Olivetti | 6 | 6 | ||||||||||||||||||||
| G Barrère A Olivetti | 4 | 6 | [10] | G Barrère A Olivetti | 4 | 77 | [10] | ||||||||||||||||||||
 F Gaio R Marcora | 2 | 4 | 2 | N Lammons J Withrow | 6 | 63 | [6] | ||||||||||||||||||||
| 2 | N Lammons J Withrow | 6 | 6 | ||||||||||||||||||||||||
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