2021 Ostrava Challenger – Doubles

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.

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

Main article: 2021 Ostrava Challenger

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

1. Roman Jebavý / Igor Zelenay (quarterfinals)
2. Luis David Martínez / Andrei Vasilevski (first round)
3. Evan King / Hunter Reese (semifinals)
4. Karol Drzewiecki / Szymon Walków (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

	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]