Doubles
2021 Split Open
Final
Champions	Andrey Golubev Aleksandr Nedovyesov
Runners-up	Szymon Walków Jan Zieliński
Score	7–5, 6–7(5–7), [10–5]
Events
Singles Doubles
← 2020 · Split Open · 2021 →

Treat Huey and Nathaniel Lammons were the defending champions^[1] but chose not to defend their title.

Andrey Golubev and Aleksandr Nedovyesov won the title after defeating Szymon Walków and Jan Zieliński 7–5, 6–7^(5–7), [10–5] in the final.

	First round							Quarterfinals							Semifinals							Final
	1	A Golubev A Nedovyesov	6	6
	WC	Karlo Krolo L Mikrut	1	3				1	A Golubev A Nedovyesov	6	6
		K Coppejans S Martos Gornés	4	2					D Brown L Margaroli	2	1
		D Brown L Margaroli	6	6											1	A Golubev A Nedovyesov	6	2	[10]
	4	P Raja T-S Weissborn	6	6												Z Kolář L Rosol	2	6	[6]
	WC	Duje Kekez M Poljičak	2	3				4	P Raja T-S Weissborn	3	6	[8]
	WC	D Ajduković Marino Jakić	4	1					Z Kolář L Rosol	6	3	[10]
		Z Kolář L Rosol	6	6																		1	A Golubev A Nedovyesov	7	65	[10]
		S Doumbia F Reboul	3	2																			S Walków J Zieliński	5	77	[5]
		S Walków J Zieliński	6	6					S Walków J Zieliński	7	78
		J Cerretani A Shamasdin	65	5				3	R Galloway A Lawson	5	66
	3	R Galloway A Lawson	77	7												S Walków J Zieliński	6	6
		D Petrović M Safwat	3	5											2	A Olivetti M Reid	4	4
		I Sabanov M Sabanov	6	7					I Sabanov M Sabanov	1	5
		A Bolt M Polmans	64	7	[9]			2	A Olivetti M Reid	6	7
	2	A Olivetti M Reid	77	5	[11]

• Main draw