2023 UniCredit Czech Open – Singles

Vít Kopřiva was the defending champion but lost in the first round to Máté Valkusz.

Dalibor Svrčina won the title after defeating Tomáš Macháč 6–4, 6–2 in the final.

Seeds
• # 🇨🇿 Jiří Lehečka (quarterfinals)

• # 🇦🇷 Federico Coria (first round)

• # 🇦🇷 Facundo Bagnis (second round)

• # 🇭🇺 Zsombor Piros (second round)

• # 🇨🇿 Tomáš Macháč (final)

• # 🇸🇰 Lukáš Klein (semifinals)

• # 🇸🇪 Elias Ymer (second round, retired)

• # 🇮🇹 Flavio Cobolli (first round)