2017 Koblenz Open – Singles

This was the first edition of the tournament.

Ruben Bemelmans won the title after defeating Nils Langer 6–4, 3–6, 7–6(7–0) in the final.

Seeds
• # 🇨🇿 Lukáš Rosol (second round)

• # 🇦🇷 Guido Andreozzi (second round)

• # 🇩🇪 Benjamin Becker (withdrew)

• # 🇮🇹 Alessandro Giannessi (second round)

• # 🇷🇴 Marius Copil (first round)

• # 🇷🇺 Teymuraz Gabashvili (second round)

• # 🇦🇷 Marco Trungelliti (first round)

• # Grega Žemlja (first round)