2018 Kentucky Bank Tennis Championships – Men's singles

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

Lloyd Harris won the title after defeating Stefano Napolitano 6–4, 6–3 in the final.

Seeds
• # 🇪🇸 Marcel Granollers (withdrew)

• # 🇦🇺 Marc Polmans (second round)

• # 🇸🇰 Norbert Gombos (first round)

• # 🇬🇧 Liam Broady (first round)

• # 🇦🇺 Max Purcell (first round)

• # Lloyd Harris (champion)

• # 🇬🇧 Jay Clarke (quarterfinals, retired)

• # 🇮🇹 Stefano Napolitano (final)