2017 Slovak Open – Singles

Norbert Gombos was the defending champion but lost in the first round to Jerzy Janowicz.

Lukáš Lacko won the title after defeating Marius Copil 6–4, 7–6(7–4) in the final.

Seeds
• # 🇰🇿 Mikhail Kukushkin (semifinals, retired)

• # 🇭🇺 Márton Fucsovics (second round)

• # 🇮🇹 Andreas Seppi (quarterfinals)

• # 🇷🇴 Marius Copil (final)

• # 🇨🇾 Marcos Baghdatis (second round, retired)

• # 🇺🇦 Sergiy Stakhovsky (first round)

• # 🇸🇰 Norbert Gombos (first round)

• # 🇸🇰 Lukáš Lacko (champion)