2017 Torneo Internacional Challenger León – Singles

Michael Berrer was the defending champion but chose not to defend his title.

Adrián Menéndez Maceiras won the title after defeating Roberto Quiroz 6–4, 3–6, 6–3 in the final.

Seeds
• # 🇩🇴 Víctor Estrella Burgos (quarterfinals)

• # 🇺🇸 Ernesto Escobedo (second round)

• # 🇨🇦 Vasek Pospisil (quarterfinals)

• # 🇺🇸 Stefan Kozlov (second round)

• # 🇧🇷 João Souza (second round)

• # 🇺🇸 Tennys Sandgren (second round)

• # 🇷🇺 Teymuraz Gabashvili (quarterfinals)

• # Jason Jung (first round)