Doubles
2021 Generali Open Kitzbühel
Final
Champions	Alexander Erler Lucas Miedler
Runners-up	Roman Jebavý Matwé Middelkoop
Score	7–5, 7–6(7–5)
Events
Singles Doubles
← 2020 · Generali Open Kitzbühel · 2022 →

Austin Krajicek and Franko Škugor were the defending champions,^[1] but Krajicek chose to compete at the Summer Olympics and Škugor chose not to defend his title.

Alexander Erler and Lucas Miedler won the title, defeating Roman Jebavý and Matwé Middelkoop in the final, 7–5, 7–6^(7–5).

	First round							Quarterfinals							Semifinals							Final
	1	T Brkić N Ćaćić	6	6
		D Pel A Rinderknech	2	3				1	T Brkić N Ćaćić	78	2	[10]
		R Matos A Vasilevski	6	7					R Matos A Vasilevski	66	6	[8]
		M Cecchinato S Travaglia	3	5											1	T Brkić N Ćaćić	6	1	[10]
	4	A Behar G Durán	6	64	[13]										WC	A Erler L Miedler	1	6	[12]
		R Albot D Molchanov	1	77	[11]			4	A Behar G Durán	79	4	[9]
	WC	A Erler L Miedler	77	6				WC	A Erler L Miedler	67	6	[11]
		P Cuevas T Seyboth Wild	64	3																		WC	A Erler L Miedler	7	77
		R Arneodo A Nedovyesov	3	65																		3	R Jebavý M Middelkoop	5	65
		A Begemann I Zelenay	6	77					A Begemann I Zelenay	77	3	[9]
		LD Martínez A Sitak	77	4	[1]			3	R Jebavý M Middelkoop	64	6	[11]
	3	R Jebavý M Middelkoop	65	6	[10]										3	R Jebavý M Middelkoop	6	1	[10]
		P Martínez M Polmans	6	6												P Martínez M Polmans	3	6	[7]
	PR	M López J Munar	4	0					P Martínez M Polmans	65	6	[10]
	WC	N Oberleitner T-S Weissborn	66	2				2	H Nys A Vavassori	77	3	[8]
	2	H Nys A Vavassori	78	6

• Main Draw