2021 St. Petersburg Open – Doubles

Jürgen Melzer and Édouard Roger-Vasselin were the defending champions,^[1] but Roger-Vasselin chose not to participate and Melzer chose to compete in Vienna instead.

Jamie Murray and Bruno Soares won the title, defeating Andrey Golubev and Hugo Nys in the final, 6–3, 6–4.

	First round							Quarterfinals							Semifinals							Final
	1	J Murray B Soares	6	6
	WC	J Erlich A Vasilevski	1	4				1	J Murray B Soares	77	3	[10]
	PR	D Inglot K Skupski	4	5					L Saville J-P Smith	60	6	[6]
		L Saville J-P Smith	6	7											1	J Murray B Soares	7	6
	3	M Arévalo M Middelkoop	6	5	[7]											M Daniell M Demoliner	5	3
		M Daniell M Demoliner	3	7	[10]				M Daniell M Demoliner	6	3	[10]
		A Behar G Escobar	4	5					T Fritz T Paul	0	6	[7]
		T Fritz T Paul	6	7																		1	J Murray B Soares	6	6
		T Brkić N Ćaćić	4	6	[7]																	4	A Golubev H Nys	3	4
		S González A Molteni	6	2	[10]				S González A Molteni	64	3
		A Bublik I Ivashka	3	1				4	A Golubev H Nys	77	6
	4	A Golubev H Nys	6	6											4	A Golubev H Nys	6	2	[10]
		K Khachanov A Rublev	6	6												R Bopanna D Shapovalov	4	6	[4]
	WC	D Golubev E Tiurnev	1	1					K Khachanov A Rublev	4	7	[7]
		R Bopanna D Shapovalov	7	6					R Bopanna D Shapovalov	6	5	[10]
	2	R Klaasen B McLachlan	5	4

• Main Draw