2017 Quito Challenger – Singles

Horacio Zeballos was the defending champion but chose not to defend his title.

Nicolás Jarry won the title after defeating Gerald Melzer 6–3, 6–2 in the final.

Seeds
• # 🇩🇴 Víctor Estrella Burgos (semifinals)

• # 🇦🇷 Renzo Olivo (first round)

• # Nicolás Jarry (champion)

• # 🇦🇹 Sebastian Ofner (first round)

• # 🇦🇹 Gerald Melzer (final)

• # 🇸🇰 Andrej Martin (quarterfinals)

• # 🇧🇷 Guilherme Clezar (quarterfinals)

• # 🇮🇳 Prajnesh Gunneswaran (first round)