2017 Internazionali di Tennis Castel del Monte – Singles

Luca Vanni was the defending champion but chose not to defend his title.

Uladzimir Ignatik won the title after defeating Christopher Heyman 6–7(3–7), 6–4, 7–6(7–3) in the final.

Seeds
• # 🇮🇹 Stefano Travaglia (first round)

• # 🇱🇹 Ričardas Berankis (second round)

• # 🇧🇦 Mirza Bašić (semifinals)

• # 🇧🇦 Aldin Šetkić (second round)

• # 🇧🇾 Uladzimir Ignatik (champion)

• # Viktor Galović (quarterfinals)

• # 🇮🇹 Lorenzo Sonego (second round)

• # 🇨🇿 Zdeněk Kolář (quarterfinals)