Doubles
2021 Swiss Open Gstaad
Final
Champions	Marc-Andrea Hüsler Dominic Stricker
Runners-up	Szymon Walków Jan Zieliński
Score	6–1, 7–6(9–7)
Events
Singles Doubles
← 2019 · Swiss Open Gstaad · 2022 →

Sander Gillé and Joran Vliegen were the reigning champions from when the tournament was last held in 2019,^[1] 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).

	First round							Quarterfinals							Semifinals							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	79
	WC	J Paul L Riedi	6	6																			S Walków J Zieliński	1	67
		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	63	[2]
		S Walków J Zieliński	77	0												S Walków J Zieliński	4	77	[10]
		S Arends D Pel	64	0r					S Walków J Zieliński	6	67	[10]
		D Brown T-S Weissborn	6	3	[10]				D Brown T-S Weissborn	4	79	[7]
	2	A Behar G Escobar	4	6	[7]

• Main Draw