2018 Campeonato Internacional de Tênis de Campinas – Singles

Gastão Elias was the defending champion but lost in the first round to Camilo Ugo Carabelli.

Cristian Garín won the title after defeating Federico Delbonis 6–3, 6–4 in the final.

Seeds
• # Pablo Cuevas (first round)

• # 🇦🇷 Federico Delbonis (final)

• # 🇧🇴 Hugo Dellien (first round)

• # 🇧🇷 Thiago Monteiro (semifinals)

• # 🇦🇷 Juan Ignacio Londero (first round)

• # 🇦🇷 Facundo Bagnis (semifinals)

• # 🇦🇷 Carlos Berlocq (quarterfinals)

• # Cristian Garín (champion)