2018 Internazionali di Tennis Castel del Monte – Singles

Uladzimir Ignatik was the defending champion but lost in the second round to Ugo Humbert.

Humbert won the title after defeating Filippo Baldi 6–4, 7–6(7–3) in the final.

Seeds
• # 🇫🇷 Ugo Humbert (champion)

• # 🇮🇹 Lorenzo Sonego (second round)

• # 🇮🇹 Paolo Lorenzi (second round)

• # 🇪🇸 Adrián Menéndez Maceiras (first round)

• # 🇺🇦 Sergiy Stakhovsky (quarterfinals)

• # 🇫🇷 Quentin Halys (semifinals)

• # 🇫🇷 Corentin Moutet (second round)

• # 🇮🇹 Filippo Baldi (final)