# 2023 Campeonato Internacional de Tênis de Campinas – Singles

Jan Choinski was the defending champion but lost in the second round to Andrea Pellegrino.
Thiago Monteiro won the title after defeating Camilo Ugo Carabelli 3–6, 6–4, 6–4 in the final.

## Seeds

* Federico Coria (second round)
* Juan Manuel Cerúndolo (second round)
* Facundo Díaz Acosta (second round)
* Francisco Comesaña (second round, retired)
* Jan Choinski (second round)
* Hugo Dellien (quarterfinals)
* Felipe Meligeni Alves (second round)
* Camilo Ugo Carabelli (final)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Andrea Pellegrino | 2 | 1 | | | | | |
| 8 | Camilo Ugo Carabelli | 6 | 6 | | | | | |
| 8 | Camilo Ugo Carabelli | 6 | 6 | 8 | Camilo Ugo Carabelli | 6 | 4 | 4 |
| | | | | | Thiago Monteiro | 3 | 6 | 6 |
| | Thiago Monteiro | 6 | 6 | | Thiago Monteiro | 3 | 6 | 6 |
| | Luciano Darderi | 2 | 1 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | F Coria | 6 | 6$^4$ | 6 | | | | | | | | | | | | | | |
| Q | Wilson Leite | 2 | 7$^7$ | 1 | 1 | F Coria | 3 | 6 | 3 | | | | | | | | | |
| Q | O Luz | 6 | 6 | | Q | O Luz | 6 | 3 | 6 | | | | | | | | | |
| | A Collarini | 3 | 2 | | | | | | | Q | O Luz | 3 | 6 | 3 | | | | |
| | M Trungelliti | 4 | 0$^r$ | | | | | | | | A Pellegrino | 6 | 0 | 6 | | | | |
| | A Pellegrino | 6 | 1 | | | A Pellegrino | 6 | 3 | 6 | | | | | | | | | |
| Alt | JL Reis da Silva | 6 | 2 | 1 | 5 | J Choinski | 4 | 6 | 3 | | | | | | | | | |
| 5 | J Choinski | 4 | 6 | 6 | | | | | | | | | | | | A Pellegrino | 2 | 1 |
| 4 | F Comesaña | 7 | 0 | 6 | | | | | | | | | | | 8 | C Ugo Carabelli | 6 | 6 |
| | N Hardt | 5 | 6 | 2 | 4 | F Comesaña | 4$^r$ | | | | | | | | | | | |
| Q | P Sakamoto | 5 | 3 | | Q | J Pereira | 3 | | | | | | | | | | | |
| Q | J Pereira | 7 | 6 | | | | | | | Q | J Pereira | 6 | 1 | 1 | | | | |
| | G Andreozzi | 6 | 3 | 7 | | | | | | 8 | C Ugo Carabelli | 4 | 6 | 6 | | | | |
| | JP Ficovich | 4 | 6 | 5 | | G Andreozzi | 3 | 2 | | | | | | | | | | |
| Q | Igor Gimenez | 0 | 3 | | 8 | C Ugo Carabelli | 6 | 6 | | | | | | | | | | |
| 8 | C Ugo Carabelli | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 6 | H Dellien | 6 | 6 | | | | | | | | | | | | | | |
| WC | E Ribeiro | 1 | 3 | | 6 | H Dellien | 6 | 6 | | | | | | | | | |
| WC | Enzo Lima | 5 | 7 | 2 | | S Rodríguez Taverna | 2 | 3 | | | | | | | | | |
| | S Rodríguez Taverna | 7 | 5 | 6 | | | | | | 6 | H Dellien | 7$^7$ | 4 | 3 | | | |
| SE | G Heide | 3 | 0$^r$ | | | | | | | | T Monteiro | 6$^5$ | 6 | 6 | | | |
| | T Monteiro | 6 | 1 | | | T Monteiro | 3 | 6 | 6 | | | | | | | | |
| | F Delbonis | 3 | 6 | 3 | 3 | F Díaz Acosta | 6 | 1 | 3 | | | | | | | | |
| 3 | F Díaz Acosta | 6 | 3 | 6 | | | | | | | | | | | T Monteiro | 6 | 6 |
| 7 | F Meligeni Alves | 6 | 7$^7$ | | | | | | | | | | | | L Darderi | 2 | 1 |
| Q | D Dutra da Silva | 2 | 6$^4$ | | 7 | F Meligeni Alves | 6 | 3 | 0 | | | | | | | | |
| | RA Burruchaga | 4 | 6 | 6 | | RA Burruchaga | 4 | 6 | 6 | | | | | | | | |
| WC | Nicolas Zanellato | 6 | 4 | 2 | | | | | | | RA Burruchaga | 1 | 3 | | | | |
| | L Darderi | 6 | 6 | | | | | | | | L Darderi | 6 | 6 | | | | |
| Alt | M Pucinelli de Almeida | 1 | 4 | | | L Darderi | 6 | 6 | | | | | | | | | |
| Alt | M Dellien | 3 | 0$^r$ | | 2 | JM Cerúndolo | 2 | 4 | | | | | | | | | |
| 2 | JM Cerúndolo | 6 | 0 | | | | | | | | | | | | | | |