2017 Challenger Ciudad de Guayaquil – Singles

Nicolás Kicker was the defending champion but lost in the quarterfinals to Facundo Bagnis.

Gerald Melzer won the title after defeating Bagnis 6–3, 6–1 in the final.

Seeds
• # 🇩🇴 Víctor Estrella Burgos (second round)

• # 🇦🇷 Nicolás Kicker (quarterfinals)

• # 🇪🇸 Roberto Carballés Baena (first round)

• # 🇮🇹 Marco Cecchinato (first round)

• # 🇦🇷 Carlos Berlocq (second round)

• # Gastão Elias (semifinals)

• # 🇦🇹 Gerald Melzer (champion)

• # 🇳🇴 Casper Ruud (second round)