2021 I.ČLTK Prague Open – Men's doubles

Men's doubles
2021 I.ČLTK Prague Open
Champions	Marc Polmans Sergiy Stakhovsky
Runners-up	Ivan Sabanov Matej Sabanov
Score	6–3, 6–4

The men's doubles of the 2021 I.ČLTK Prague Open tournament was played on clay in Prague, Czech Republic.

Pierre-Hugues Herbert and Arthur Rinderknech were the defending champions^[1] but chose not to compete this year.

Marc Polmans and Sergiy Stakhovsky won the title after defeating Ivan and Matej Sabanov 6–3, 6–4 in the final.

	First round							Quarterfinals							Semifinals							Final
	1	D Molchanov A Nedovyesov	6	6
		T Griekspoor O Otte	4	4				1	D Molchanov A Nedovyesov	6	1	[7]
		D Istomin A Vasilevski	4	6	[7]				M Polmans S Stakhovsky	3	6	[10]
		M Polmans S Stakhovsky	6	2	[10]											M Polmans S Stakhovsky	6	6
	4	A Begemann D Masur	6	3	[2]											D Kudla M Schnur	1	2
		R Jebavý A Martin	3	6	[10]				R Jebavý A Martin	4	4
	WC	J Šátral Robin Staněk	77	3	[8]				D Kudla M Schnur	6	6
		D Kudla M Schnur	64	6	[10]																		M Polmans S Stakhovsky	6	6
	WC	J Lehečka M Vrbenský	4	1																		3	I Sabanov M Sabanov	3	4
		E King H Reese	6	6					E King H Reese	64	5
		S Walków J Zieliński	6	3	[5]			3	I Sabanov M Sabanov	77	7
	3	I Sabanov M Sabanov	3	6	[10]										3	I Sabanov M Sabanov	6	6
		M Safwat T-S Weissborn	4	1												K Drzewiecki K Majchrzak	2	2
		K Drzewiecki K Majchrzak	6	6					K Drzewiecki K Majchrzak	6	77
	WC	A Paulson P Rikl	7	3	[5]			2	LD Martínez D Vega Hernández	4	65
	2	LD Martínez D Vega Hernández	5	6	[10]

• Main draw