2021 Challenger de Santiago II – Doubles

Luis David Martínez and Gonçalo Oliveira were the defending champions^[1] but lost in the semifinals to Evan King and Max Schnur.

Diego Hidalgo and Nicolás Jarry won the title after defeating King and Schnur 6–3, 5–7, [10–6] in the final.

Seeds

First round					Quarterfinals					Semifinals					Final

1	R Matos F Meligeni Alves	6	6
WC	Daniel Alejandro Ortiz Diego Ortiz Gamonal	2	1		1	R Matos F Meligeni Alves	6	6
	G Andreozzi G Durán	3	6¹			S Báez M Pucinelli de Almeida	4	3
	S Báez M Pucinelli de Almeida	6	7⁷							1	R Matos F Meligeni Alves	6	2	[8]
3	H Hach Verdugo MÁ Reyes-Varela	6⁵	4								D Hidalgo N Jarry	2	6	[10]
	D Hidalgo N Jarry	7⁷	6			D Hidalgo N Jarry	7⁷	7⁹
PR	J Lenz G Melzer	4	4			N Barrientos F Romboli	6³	6⁷
	N Barrientos F Romboli	6	6													D Hidalgo N Jarry	6	5	[10]
WC	Amador Salazar Yáñez Ricardo Urzúa Rivera	1	3												4	E King M Schnur	3	7	[6]
	S Galdós F Mena	6	6			S Galdós F Mena	4	6	[8]
	F Cerúndolo C Ugo Carabelli	0	3		4	E King M Schnur	6	3	[10]
4	E King M Schnur	6	6							4	E King M Schnur	7⁷	6
	MT Barrios Vera C Gómez-Herrera	7⁷	7⁷							2	LD Martínez G Oliveira	6⁴	1
Alt	N Chappell R Stalder	6⁰	6⁵			MT Barrios Vera C Gómez-Herrera	3	6⁴
	JP Ficovich TA Tirante	6	3	[7]	2	LD Martínez G Oliveira	6	7⁷
2	LD Martínez G Oliveira	3	6	[10]