| 2023 IBG Prague Open | |
|---|---|
| Date | 21–26 August |
| Category | ATP Challenger Tour |
| Draw | 32S / 16D |
| Surface | Clay |
| Location | Prague, Czech Republic |
| Champions | |
| Singles | |
 Rudolf Molleker | |
| Doubles | |
 Petr Nouza / Andrew Paulson | |
The 2023 IBG Prague Open was a professional tennis tournament played on clay courts. It was part of the 2023 ATP Challenger Tour. It took place in Prague, Czech Republic between 21 and 26 August 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUT | Lukas Neumayer | 223 | 1 |
 ITA | Francesco Maestrelli | 246 | 2 |
| ITA | Luciano Darderi | 250 | 3 |
| GER | Rudolf Molleker | 266 | 4 |
 POR | João Sousa | 270 | 5 |
| GER | Henri Squire | 276 | 6 |
 FRA | Mathias Bourgue | 277 | 7 |
 MON | Valentin Vacherot | 286 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
Carlos López MontagudThe following players received entry from the qualifying draw:
Paweł Ciaś Gabriel Debru 
Federico Agustín Gómez 
Kirill Kivattsev Jakub Nicod Michael Vrbenský Rudolf Molleker def. Gabriel Debru 6–2, 6–2. Petr Nouza / Andrew Paulson def. 
Filip Bergevi / 
Mick Veldheer 7–5, 6–3.