Doubles
2021 Geneva Open
Final
Champions	John Peers Michael Venus
Runners-up	Simone Bolelli Máximo González
Score	6–2, 7–5
Events
Singles Doubles
← 2019 · Geneva Open · 2022 →

Oliver Marach and Mate Pavić were the two-time defending champions from when the event was last held in 2019^[1] but lost in the first round to Tomislav Brkić and Nikola Ćaćić.

John Peers and Michael Venus won the title, defeating Simone Bolelli and Máximo González in the final, 6–2, 7–5.

	First round							Quarterfinals							Semifinals							Final
	1	O Marach M Pavić	66	2
		T Brkić N Ćaćić	78	6					T Brkić N Ćaćić	3	67
		M Purcell L Saville	63	62					S Bolelli M González	6	79
		S Bolelli M González	77	77												S Bolelli M González	3	6	[10]
	3	R Klaasen B McLachlan	6	77											3	R Klaasen B McLachlan	6	3	[4]
		L Bambridge D Inglot	3	64				3	R Klaasen B McLachlan	6	77
		M Čilić A Golubev	77	6					M Čilić A Golubev	3	64
	WC	A Cazaux H Li	65	3																			S Bolelli M González	2	5
		N Lammons J Withrow	3	4																		2	J Peers M Venus	6	7
		A Behar G Escobar	6	6					A Behar G Escobar	6	3	[13]
		P Cuevas G Pella						4	R Bopanna F Škugor	3	6	[11]
	4	R Bopanna F Škugor	w/o													A Behar G Escobar	6	62	[8]
	WC	M-A Hüsler D Stricker	77	6											2	J Peers M Venus	4	77	[10]
		N Monroe B Paire	63	1				WC	M-A Hüsler D Stricker	3	6	[9]
		M Arévalo M Middelkoop	1	4				2	J Peers M Venus	6	1	[11]
	2	J Peers M Venus	6	6

• Main Draw