2017 Heilbronner Neckarcup – Singles

Nikoloz Basilashvili was the defending champion but chose not to defend his title.

Filip Krajinović won the title after defeating Norbert Gombos 6–3, 6–2 in the final.

Seeds
• # 🇦🇷 Nicolás Kicker (first round)

• # 🇷🇺 Evgeny Donskoy (first round)

• # 🇨🇿 Adam Pavlásek (first round)

• # 🇸🇰 Norbert Gombos (final)

• # Henri Laaksonen (first round)

• # 🇦🇷 Guido Pella (semifinals)

• # 🇸🇰 Andrej Martin (quarterfinals)

• # 🇳🇴 Casper Ruud (quarterfinals)