2018 Moneta Czech Open – Singles

Jiří Veselý was the defending champion but lost in the second round to Elias Ymer.

Jaume Munar won the title after defeating Laslo Đere 6–1, 6–3 in the final.

Seeds
• # 🇪🇸 Guillermo García López (semifinals)

• # Pablo Cuevas (first round)

• # 🇪🇸 Roberto Carballés Baena (first round)

• # 🇦🇷 Guido Pella (quarterfinals)

• # 🇨🇿 Jiří Veselý (second round)

• # 🇧🇦 Mirza Bašić (first round)

• # 🇰🇿 Mikhail Kukushkin (second round, withdrew)

• # 🇲🇩 Radu Albot (second round)