2017 Poznań Open – Singles

Radu Albot was the defending champion but chose not to defend his title.

Alexey Vatutin won the title after defeating Guido Andreozzi 2–6, 7–6(12–10), 6–3 in the final.

Seeds
• # 🇳🇴 Casper Ruud (second round)

• # 🇩🇪 Florian Mayer (second round)

• # 🇨🇿 Adam Pavlásek (semifinals)

• # 🇵🇱 Jerzy Janowicz (second round)

• # 🇨🇿 Jan Šátral (second round)

• # 🇦🇷 Guido Andreozzi (final)

• # 🇪🇸 Rubén Ramírez Hidalgo (quarterfinals)

• # 🇨🇿 Lukáš Rosol (quarterfinals)