| Date: | 30 September – 6 October |
| Edition: | 8th |
| Draw: | 48S / 16D |
| Surface: | Clay |
| Location: | Campinas, Brazil |
| Champs: |  Juan Pablo Varillas |
| Champd: |  Orlando Luz / Rafael Matos |
The 2019 Campeonato Internacional de Tênis de Campinas was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Campinas, Brazil between 30 September and 6 October 2019.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Bolivia, Plurination;al State of | Hugo Dellien | 82 | 1 | |
 Argentina | Leonardo Mayer | 100 | 2 | |
| Brazil | Thiago Monteiro | 108 | 3 | |
| Argentina | Guido Andreozzi | 113 | 4 | |
| Argentina | Federico Coria | 152 | 5 | |
 India | Sumit Nagal | 161 | 6 | |
| Argentina | Facundo Bagnis | 166 | 7 | |
| Argentina | Facundo Mena | 198 | 8 | |
| Brazil | João Menezes | 204 | 9 | |
| Argentina | Andrea Collarini | 215 | 10 | |
| Alejandro Tabilo | 230 | 11 | ||
 Dominican Republic | José Hernández-Fernández | 265 | 12 | |
| Argentina | Francisco Cerúndolo | 266 | 13 | |
| Argentina | Renzo Olivo | 273 | 14 | |
| Jeremy Jahn | 281 | 15 | ||
| Brazil | Thomaz Bellucci | 313 | 16 |
The following players received wildcards into the singles main draw:
Pedro Boscardin Dias Gilbert Klier Júnior Rafael Matos Matheus Pucinelli de Almeida João Lucas Reis da SilvaThe following players received entry from the qualifying draw:
See main article: 2019 Campeonato Internacional de Tênis de Campinas – Singles.
Juan Pablo Varillas def. Juan Pablo Ficovich 2–6, 7–6(7–4), 6–2.See main article: 2019 Campeonato Internacional de Tênis de Campinas – Doubles.
Orlando Luz / Rafael Matos def. 
Miguel Ángel Reyes-Varela / Fernando Romboli 6–7(2–7), 6–4, [10–8].