| Doubles | |
|---|---|
| 2021 Lima Challenger II | |
| Champions |  Sergio Galdós  Gonçalo Oliveira |
| Runners-up |  Marcelo Tomás Barrios Vera Alejandro Tabilo |
| Score | 6–2, 2–6, [10–5] |
Julian Lenz and Gerald Melzer were the defending champions [1] but chose not to defend their title.
Sergio Galdós and Gonçalo Oliveira won the title after defeating Marcelo Tomás Barrios Vera and Alejandro Tabilo 6–2, 2–6, [10–5] in the final.
Orlando Luz / 
Luis David Martínez (first round) Sergio Galdós / Gonçalo Oliveira (champions) Fernando Romboli / 
Federico Zeballos (quarterfinals)
Nicolás Barrientos / Alejandro Gómez (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | O Luz LD Martínez | 4 | 7 | [8] | |||||||||||||||||||||||
 H Casanova A Collarini | 6 | 5 | [10] | H Casanova A Collarini | 6 | 6 | |||||||||||||||||||||
| WC | G Bueno I Buse | 6 | 0 | WC | G Bueno I Buse | 3 | 1 | ||||||||||||||||||||
| WC | A Huertas del Pino C Huertas del Pino | 2 | 0r | H Casanova A Collarini | 7 | 2 | [9] | ||||||||||||||||||||
| 3 | F Romboli F Zeballos | 6 | 7 | MT Barrios Vera A Tabilo | 5 | 6 | [11] | ||||||||||||||||||||
 L Castelnuovo  A Galarneau | 2 | 5 | 3 | F Romboli F Zeballos | 6 | 2 | [9] | ||||||||||||||||||||
| MT Barrios Vera A Tabilo | 5 | 77 | [10] | MT Barrios Vera A Tabilo | 4 | 6 | [11] | ||||||||||||||||||||
 D Hidalgo C Rodríguez | 7 | 64 | [5] | MT Barrios Vera A Tabilo | 2 | 6 | [5] | ||||||||||||||||||||
| WC |  P Bertran J Panta | 4 | 4 | 2 | S Galdós G Oliveira | 6 | 2 | [10] | |||||||||||||||||||
| TM Etcheverry R Olivo | 6 | 6 | TM Etcheverry R Olivo | 3 | 2 | ||||||||||||||||||||||
 J de Jong B Stevens | 6 | 65 | [4] | 4 | N Barrientos A Gómez | 6 | 6 | ||||||||||||||||||||
| 4 | N Barrientos A Gómez | 3 | 77 | [10] | 4 | N Barrientos A Gómez | 6 | 5 | [7] | ||||||||||||||||||
 A Lazarov  J Pospíšil | 2 | S Galdós G Oliveira | 1 | 7 | [10] | ||||||||||||||||||||||
| V Kopřiva A Merino | w/o | V Kopřiva A Merino | 1 | 66 | |||||||||||||||||||||||
 P Krstin D Kuzmanov | 2 | S Galdós G Oliveira | 6 | 78 | |||||||||||||||||||||||
| 2 | S Galdós G Oliveira | w/o | |||||||||||||||||||||||||
Duilio Beretta and Renzo Olivo are the defending champions but Olivo decided no to participate.
Beretta played alongside Andrea Collarini and lost in the Quarterfinals to Nicolás Barrientos and Eduardo Struvay.
Marcelo Arévalo and Sergio Galdós defeated Alejandro González and Carlos Salamanca 6–3, 6–4 in the final.
Marcelo Arévalo and Sergio Galdós were the defending champions, but only Arévalo decided to defend his title, partnering Darian King. Arévalo lost in the quarterfinals to Alejandro Falla and Eduardo Struvay.
The doubles event at the 2017 Milo Open Cali was won by Marcelo Arévalo and Miguel Ángel Reyes-Varela. Nicolás Jarry and Hans Podlipnik-Castillo were the defending champions but chose not to defend their title and did not participate in the 2017 event. Arévalo and Reyes-Varela won the title after defeating Sergio Galdós and Fabrício Neis 6–3, 6–4 in the final.
Sergio Galdós and Leonardo Mayer were the defending champions but only Galdós chose to defend his title, partnering Ariel Behar. Galdós lost in the semifinals to Gonçalo Oliveira and Grzegorz Panfil.
Carlos Taberner and Pol Toledo Bagué were the defending champions but chose not to defend their title.
Pavel Kotov and Roman Safiullin were the defending champions but chose not to defend their title.
Franco Agamenone and Fernando Romboli were the defending champions but chose not to defend their title.
This was the first of four editions of the tournament in the 2021 ATP Challenger Tour calendar.
This was the second of four editions of the tournament in the 2021 ATP Challenger Tour calendar.
Harri Heliövaara and Emil Ruusuvuori were the defending champions but chose not to defend their title.
Sander Arends and David Pel were the defending champions but chose not to defend their title.
Sander Arends and David Pel were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
Diego Hidalgo and Nicolás Jarry were the defending champions but only Hidalgo chose to defend his title, partnering Sergio Galdós. Hidalgo lost in the quarterfinals to Hans Hach Verdugo and Miguel Ángel Reyes-Varela.
Marcelo Arévalo and Miguel Ángel Reyes-Varela were the defending champions but chose not to defend their title.
Evan King and Max Schnur were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
Diego Hidalgo and Cristian Rodríguez were the defending champions but lost in the semifinals to Jesper de Jong and Bart Stevens.
This was the first edition of the tournament.
Sergio Galdós and Gonçalo Oliveira were the defending champions but only Galdós chose to defend his title, partnering Renzo Olivo. Galdós lost in the semifinals to Orlando Luz and Camilo Ugo Carabelli.