| Date: | 1–7 October |
| Edition: | 7th |
| Draw: | 32S / 16D |
| Surface: | Clay |
| Location: | Campinas, Brazil |
| Champs: | Cristian Garín |
| Champd: |  Hugo Dellien /  Guillermo Durán |
| Before Year: | 2016 |
The 2018 Campeonato Internacional de Tênis de Campinas was a professional tennis tournament played on clay courts. It was the seventh edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Campinas, Brazil between 1 and 7 October 2018.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Pablo Cuevas | 66 | 1 | ||
| Argentina | Federico Delbonis | 91 | 2 | |
| Bolivia, Plurination;al State of | Hugo Dellien | 105 | 3 | |
 Brazil | Thiago Monteiro | 111 | 4 | |
| Argentina | Juan Ignacio Londero | 118 | 5 | |
| Argentina | Facundo Bagnis | 140 | 6 | |
| Argentina | Carlos Berlocq | 142 | 7 | |
| Christian Garín | 143 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2018 Campeonato Internacional de Tênis de Campinas – Singles.
Federico Delbonis 6–3, 6–4.See main article: 2018 Campeonato Internacional de Tênis de Campinas – Doubles.
Hugo Dellien / Guillermo Durán def. Franco Agamenone / Fernando Romboli 7–5, 6–4.
