| Doubles | |
|---|---|
| 2023 Brasil Tennis Challenger | |
| Champions |  Orlando Luz Marcelo Zormann |
| Runners-up |  Andrea Collarini Renzo Olivo |
| Score | Walkover |
This was the first edition of the tournament. [1]
Orlando Luz and Marcelo Zormann won the title by walkover after Andrea Collarini and Renzo Olivo withdrew from the final.
Boris Arias / Federico Zeballos (quarterfinals)
Karol Drzewiecki / Piotr Matuszewski (first round)
Jesper de Jong / 
Nicolás Mejía (withdrew) Andrea Collarini / Renzo Olivo (final, withdrew)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | B Arias F Zeballos | 6 | 6 | ||||||||||||||||||||||||
| H Casanova JB Torres | 4 | 0 | 1 | B Arias F Zeballos | 3 | 68 | |||||||||||||||||||||
| O Luz M Zormann | 6 | 7 | O Luz M Zormann | 6 | 710 | ||||||||||||||||||||||
M Dellien  J Panta | 3 | 5 | O Luz M Zormann | w/o | |||||||||||||||||||||||
| Alt |  Andrey Chepelev JP Paz | 2 | 5 | D Dutra da Silva  O Prihodko | |||||||||||||||||||||||
| D Dutra da Silva O Prihodko | 6 | 7 | D Dutra da Silva O Prihodko | 6 | 2 | [12] | |||||||||||||||||||||
A Merino  J Paul | 4 | 6 | [10] | A Merino J Paul | 3 | 6 | [10] | ||||||||||||||||||||
 I Carou C Ugo Carabelli | 6 | 2 | [8] | O Luz M Zormann | w/o | ||||||||||||||||||||||
| Ignacio Monzón M Navone | 62 | 6 | [8] | 4 | A Collarini R Olivo | ||||||||||||||||||||||
| Alt | Enrique Bogo Paulo André Saraiva dos Santos | 77 | 4 | [10] | Alt | E Bogo PA Saraiva dos Santos | 4 | 4 | |||||||||||||||||||
| WC | P Boscardin Dias Wilson Leite | 5 | 2 | 4 | A Collarini R Olivo | 6 | 6 | ||||||||||||||||||||
| 4 | A Collarini R Olivo | 7 | 6 | 4 | A Collarini R Olivo | 6 | 6 | ||||||||||||||||||||
| M Pucinelli de Almeida JL Reis da Silva | A Huertas del Pino C Huertas del Pino | 4 | 4 | ||||||||||||||||||||||||
 O Roca Batalla  Timo Stodder | w/o | O Roca Batalla T Stodder | 4 | 4 | |||||||||||||||||||||||
| A Huertas del Pino C Huertas del Pino | 2 | 6 | [10] | A Huertas del Pino C Huertas del Pino | 6 | 6 | |||||||||||||||||||||
| 2 | K Drzewiecki P Matuszewski | 6 | 3 | [8] | |||||||||||||||||||||||
Daniel Berta was the defending champion, but he lost in the first round against Junior A. Ore.
Agustín Velotti won the title after defeating Andrea Collarini in the final, 6–4, 7–5.
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.
Alejandro González was the defending champion, but chose to compete at the 2014 Brasil Open.
Facundo Bagnis was not the defending his title.
Marcelo Demoliner and João Souza were the defending champions, but decided to compete São Paulo instead.
Tommy Robredo was the defending champion, but lost to Pablo Cuevas in the final, 3–6, 4–6.
Pablo Andújar was the defending champion but chose not to defend his title.
Cristian Garín was the defending champion but chose not to defend his title.
Fabio Fognini was the champion in 2014, when the event was last held, but chose to compete in Dubai instead.
Yannick Hanfmann was the defending champion but chose not to defend his title.
Carlos Alcaraz defeated Richard Gasquet in the final, 6–2, 6–2 to win the singles tennis title at the 2021 Croatia Open. It was his first ATP Tour title. With the victory, Alcaraz became the youngest player to win an ATP Tour title since Kei Nishikori at the 2008 Delray Beach International Tennis Championships.
This was the first edition of the tournament.
Santiago Rodríguez Taverna was the defending champion but lost in the quarterfinals to Genaro Alberto Olivieri.
Conner Huertas del Pino and Mats Rosenkranz were the defending champions but only Huertas del Pino chose to defend his title, partnering Alexander Merino. Huertas del Pino lost in the first round to Murkel Dellien and Jorge Panta.
Alessandro Giannessi was the defending champion but chose not to defend his title.
Gonçalo Oliveira and Andrei Vasilevski were the defending champions but chose not to defend their title.
Renzo Olivo was the defending champion but lost in the semifinals to Andrea Vavassori.
This was the first edition of the tournament.
Guillermo Durán and Nicolás Mejía were the defending champions but chose not to defend their title.
This was the first edition of the tournament.