2021 Swiss Open Gstaad – Doubles
# 2021 Swiss Open Gstaad – Doubles

Sander Gillé and Joran Vliegen were the reigning champions from when the tournament was last held in 2019, but chose not to participate this year.

Marc-Andrea Hüsler and Dominic Stricker won the title, defeating Szymon Walków and Jan Zieliński in the final, 6–1, $7–6^{(9–7)}.$

## Seeds

* Robin Haase / Matwé Middelkoop (first round)
* Ariel Behar / Gonzalo Escobar (first round)
* Hugo Nys / Andrea Vavassori (first round)
* André Göransson / Frederik Nielsen (first round)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Draw

| First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 1 | R Haase M Middelkoop | 3 | 4 | | | | | | | | | | | | | | | |
| | B Paire A Rinderknech | 6 | 6 | | | B Paire A Rinderknech | 7 | 6 | | | | | | | | | | |
| | D Molchanov A Nedovyesov | 7 | 5 | [7] | | R Galloway A Lawson | 5 | 4 | | | | | | | | | | |
| | R Galloway A Lawson | 5 | 7 | [10] | | | | | | | B Paire A Rinderknech | 4 | 6 | [12] | | | | |
| 3 | H Nys A Vavassori | 6 | 3 | [4] | | | | | | WC | M-A Hüsler D Stricker | 6 | 4 | [14] | | | | |
| | F Delbonis G Durán | 3 | 6 | [10] | | F Delbonis G Durán | 1 | 4 | | | | | | | | | | |
| | R Arneodo A Olivetti | 4 | 4 | | WC | M-A Hüsler D Stricker | 6 | 6 | | | | | | | | | | |
| WC | M-A Hüsler D Stricker | 6 | 6 | | | | | | | | | | | | WC | M-A Hüsler D Stricker | 6 | $7^9$ |
| WC | J Paul L Riedi | 6 | 6 | | | | | | | | | | | | | S Walków J Zieliński | 1 | $6^7$ |
| | E King M Schnur | 3 | 4 | | WC | J Paul L Riedi | w/o | | | | | | | | | | | |
| Alt | Z Bergs T Griekspoor | 6 | 6 | | Alt | Z Bergs T Griekspoor | | | | | | | | | | | | |
| 4 | A Göransson F Nielsen | 3 | 4 | | | | | | | WC | J Paul L Riedi | 6 | $6^3$ | [2] | | | | |
| | S Walków J Zieliński | $7^7$ | 0 | | | | | | | | S Walków J Zieliński | 4 | $7^7$ | [10] | | | | |
| | S Arends D Pel | $6^4$ | $0^r$ | | | S Walków J Zieliński | 6 | $6^7$ | [10] | | | | | | | | | |
| | D Brown T-S Weissborn | 6 | 3 | [10] | | D Brown T-S Weissborn | 4 | $7^9$ | [7] | | | | | | | | | |
| 2 | A Behar G Escobar | 4 | 6 | [7] | | | | | | | | | | | | | | |
