2019 Campeonato Internacional de Tênis de Campinas – Singles

Cristian Garín was the defending champion but chose not to defend his title.

Juan Pablo Varillas won the title after defeating Juan Pablo Ficovich 2–6, 7–6(7–4), 6–2 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇧🇴 Hugo Dellien (third round)

• # 🇦🇷 Leonardo Mayer (third round, withdrew)

• # 🇧🇷 Thiago Monteiro (second round)

• # 🇦🇷 Guido Andreozzi (second round, retired)

• # 🇦🇷 Federico Coria (semifinals)

• # 🇮🇳 Sumit Nagal (semifinals)

• # 🇦🇷 Facundo Bagnis (second round)

• # 🇦🇷 Facundo Mena (second round)

• # 🇧🇷 João Menezes (second round)

• # 🇦🇷 Andrea Collarini (third round)

• # Alejandro Tabilo (third round)

• # 🇩🇴 José Hernández-Fernández (second round)

• # 🇦🇷 Francisco Cerúndolo (quarterfinals)

• # 🇦🇷 Renzo Olivo (second round)

• # 🇩🇪 Jeremy Jahn (second round)

• # 🇧🇷 Thomaz Bellucci (quarterfinals)