2021 Open de Oeiras IV – Doubles

Hunter Reese and Sem Verbeek were the defending champions but chose not to defend their title.

Doubles
2021 Open de Oeiras IV
Champions	Jesper de Jong Tim van Rijthoven
Runners-up	Julian Lenz Roberto Quiroz
Score	6–1, 7–6(7–3)

Main article: 2021 Open de Oeiras IV

Jesper de Jong and Tim van Rijthoven won the title after defeating Julian Lenz and Roberto Quiroz 6–1, 7–6^(7–3) in the final.

Seeds

1. Evan King / Gonçalo Oliveira (quarterfinals)
2. Sadio Doumbia / Fabien Reboul (first round)
3. Dustin Brown / Tristan-Samuel Weissborn (quarterfinals)
4. Karol Drzewiecki / Sergio Martos Gornés (first round)

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	E King G Oliveira	5	78	[10]
		R Ortega Olmedo D Yevseyev	7	66	[7]			1	E King G Oliveira	6	1	[7]
		P Cachin C Ugo Carabelli	6	6					P Cachin C Ugo Carabelli	4	6	[10]
		M Bortolotti V Galović	3	2												P Cachin C Ugo Carabelli	4	4
	3	D Brown T-S Weissborn	6	6												J de Jong T van Rijthoven	6	6
		S Galdós F Zeballos	4	1				3	D Brown T-S Weissborn	6	1	[10]
		J de Jong T van Rijthoven	6	6					J de Jong T van Rijthoven	4	6	[12]
		C-h Tseng T-l Wu	2	1																			J de Jong T van Rijthoven	6	77
		R Bonadio N Serdarušić	6	3	[11]																		J Lenz R Quiroz	1	63
	WC	Gonçalo Falcão Luís Faria	3	6	[9]				R Bonadio N Serdarušić	2	2
	WC	N Borges F Cabral	77	66	[11]			WC	N Borges F Cabral	6	6
	4	K Drzewiecki S Martos Gornés	64	78	[9]										WC	N Borges F Cabral	65	2
		J Cerretani VV Cornea	6	4	[4]											J Lenz R Quiroz	77	6
	WC	Pedro Araújo Fábio Coelho	4	6	[10]			WC	P Araújo F Coelho	5	7	[9]
		J Lenz R Quiroz	2	77	[10]				J Lenz R Quiroz	7	5	[11]
	2	S Doumbia F Reboul	6	65	[3]

External links

• Main draw