2023 UniCredit Czech Open

The 2023 UniCredit Czech Open was a professional tennis tournament played on clay courts. It was the 30th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Prostějov, Czech Republic between 5 and 10 June 2023.

Seeds

 * 1 Rankings are as of 29 May 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇿 Jiří Lehečka
 * 🇨🇿 Jakub Menšík
 * 🇸🇰 Lukáš Pokorný

The following player received entry into the singles main draw as a special exempt:
 * 🇦🇷 Francisco Comesaña

The following player received entry into the singles main draw as an alternate:
 * 🇨🇿 Dalibor Svrčina

The following players received entry from the qualifying draw:
 * 🇨🇿 Hynek Bartoň
 * 🇦🇷 Román Andrés Burruchaga
 * 🇮🇹 Edoardo Lavagno
 * 🇫🇷 Giovanni Mpetshi Perricard
 * 🇧🇷 Matheus Pucinelli de Almeida
 * 🇭🇺 Máté Valkusz

Singles

 * 🇨🇿 Dalibor Svrčina def. 🇨🇿 Tomáš Macháč 6–4, 6–2.

Doubles

 * Ariel Behar / 🇨🇿 Adam Pavlásek def. 🇮🇹 Marco Bortolotti / 🇪🇸 Sergio Martos Gornés 7–5, 6–4.