Doubles
2021 Ostrava Challenger
Champions	Marc Polmans Sergiy Stakhovsky
Runners-up	Andrew Paulson Patrik Rikl
Score	7–6(7–4), 3–6, [10–7]

Artem Sitak and Igor Zelenay were the defending champions^[1] but only Zelenay chose to defend his title, partnering Roman Jebavý. Zelenay lost in the quarterfinals to Zdeněk Kolář and Lukáš Rosol.

Marc Polmans and Sergiy Stakhovsky won the title after defeating Andrew Paulson and Patrik Rikl 7–6^(7–4), 3–6, [10–7] in the final.

Seeds

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

	First round							Quarterfinals							Semifinals							Final
	1	R Jebavý I Zelenay	6	65	[10]
		M Guinard A Rinderknech	2	77	[3]			1	R Jebavý I Zelenay	3	1
		Z Kolář L Rosol	6	77					Z Kolář L Rosol	6	6
	WC	J Lehečka M Vrbenský	1	63												Z Kolář L Rosol	6	2	[7]
	4	K Drzewiecki S Walków	6	6												M Polmans S Stakhovsky	3	6	[10]
		L Margaroli A Shamasdin	3	2				4	K Drzewiecki S Walków	66	5
		L Miedler M Safwat	6	65	[1]				M Polmans S Stakhovsky	78	7
		M Polmans S Stakhovsky	4	77	[10]																		M Polmans S Stakhovsky	77	3	[10]
		S Balaji J Nedunchezhiyan	6	6																		WC	A Paulson P Rikl	64	6	[7]
		P Polansky B Schnur	3	3					S Balaji J Nedunchezhiyan	2	6	[6]
		T Gabashvili R Safiullin	2	3				3	E King H Reese	6	2	[10]
	3	E King H Reese	6	6											3	E King H Reese	4	4
	WC	V Kopřiva D Svrčina	4	3											WC	A Paulson P Rikl	6	6
	WC	A Paulson P Rikl	6	6				WC	A Paulson P Rikl	3	7	[10]
		MT Barrios Vera A Tabilo	6	2	[10]				MT Barrios Vera A Tabilo	6	5	[8]
	2	LD Martínez A Vasilevski	1	6	[6]

References

External links

• Main draw