| Date: | 2–8 October |
| Edition: | 12th |
| Surface: | Clay |
| Location: | Campinas, Brazil |
| Champs: |  Thiago Monteiro |
| Champd: |  Guido Andreozzi / Guillermo Durán |
The 2023 Campeonato Internacional de Tênis de Campinas was a professional tennis tournament played on clay courts. It was the 12th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Campinas, Brazil between 2 and 8 October 2023.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Argentina | Federico Coria | 83 | 1 | |
| Argentina | Juan Manuel Cerúndolo | 88 | 2 | |
| Argentina | Facundo Díaz Acosta | 105 | 3 | |
| Argentina | Francisco Comesaña | 127 | 4 | |
 United Kingdom | Jan Choinski | 128 | 5 | |
 Bolivia, Plurination;al State of | Hugo Dellien | 136 | 6 | |
| Brazil | Felipe Meligeni Alves | 142 | 7 | |
| Argentina | Camilo Ugo Carabelli | 151 | 8 |
The following players received wildcards into the singles main draw:
Enzo Lima Eduardo Ribeiro Nicolas ZanellatoThe following player received entry into the singles main draw as a special exempt:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Daniel Dutra da Silva Igor Gimenez Wilson Leite Orlando Luz José Pereira Pedro SakamotoSee main article: 2023 Campeonato Internacional de Tênis de Campinas – Singles.
Thiago Monteiro def. Camilo Ugo Carabelli 3–6, 6–4, 6–4.See main article: 2023 Campeonato Internacional de Tênis de Campinas – Doubles.
Guido Andreozzi / Guillermo Durán def. 
Diego Hidalgo / 
Cristian Rodríguez 7–6(7–4), 6–3.