Doubles
2021 Argentina Open
Champions	Tomislav Brkić Nikola Ćaćić
Runners-up	Ariel Behar Gonzalo Escobar
Score	6–3, 7–5

Marcel Granollers and Horacio Zeballos were the defending champions, but they decided not to participate this year.

Tomislav Brkić and Nikola Ćaćić won the title, defeating Ariel Behar and Gonzalo Escobar in the final, 6–3, 7–5.

Seeds

Draw

Draw

	First round							Quarterfinals							Semifinals							Final
	1	A Krajicek F Škugor	2	6	[10]
		P Andújar J Munar	6	3	[8]			1	A Krajicek F Škugor	6	6
		N Monroe A Sitak	6	63	[7]			WC	F Cerúndolo F Coria	4	2
	WC	F Cerúndolo F Coria	3	77	[10]										1	A Krajicek F Škugor	66	6	[3]
	4	A Behar G Escobar	6	69	[10]										4	A Behar G Escobar	78	4	[10]
		M Kecmanović G Mager	3	711	[6]			4	A Behar G Escobar	6	77
		O Marach LD Martínez	6	3	[11]				O Marach LD Martínez	2	63
		R Arneodo B Paire	4	6	[9]																	4	A Behar G Escobar	3	5
		G Durán A Molteni	2	1																			T Brkić N Ćaćić	6	7
		D Koepfer J Sousa	6	6					D Koepfer J Sousa	4	77	[10]
	WC	F Díaz Acosta TA Tirante	65	1				3	S Bolelli M González	6	64	[5]
	3	S Bolelli M González	77	6												D Koepfer J Sousa	6	65	[5]
		T Brkić N Ćaćić	6	6												T Brkić N Ćaćić	3	77	[10]
	Alt	R Carballés Baena S Caruso	3	4					T Brkić N Ćaćić	w/o
		A Göransson T Monteiro	6	6					A Göransson T Monteiro
	2	M Demoliner S González	4	2

References

• Main Draw