2017 UniCredit Czech Open – Singles

Mikhail Kukushkin was the defending champion but lost in the first round to Nicolás Jarry.

Jiří Veselý won the title after defeating Federico Delbonis 5–7, 6–1, 7–5 in the final.

Seeds
• # 🇸🇰 Martin Kližan (second round)

• # 🇨🇿 Jiří Veselý (champion)

• # Nikoloz Basilashvili (first round)

• # 🇰🇿 Mikhail Kukushkin (first round)

• # 🇦🇷 Nicolás Kicker (quarterfinals)

• # 🇲🇩 Radu Albot (quarterfinals)

• # 🇸🇰 Norbert Gombos (first round)

• # 🇨🇿 Adam Pavlásek (second round)