| 2023 Kozerki Open | |
|---|---|
| Date | 14–19 August |
| Edition | 2nd |
| Surface | Hard |
| Location | Grodzisk Mazowiecki, Poland |
| Champions | |
| Singles | |
 Jesper de Jong | |
| Doubles | |
 Théo Arribagé / Luca Sanchez | |
The 2023 Kozerki Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Grodzisk Mazowiecki, Poland between 14 and 19 August 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 CZE | Tomáš Macháč | 106 | 1 |
 BEL | Joris De Loore | 166 | 2 |
| CZE | |||
 AUS | Marc Polmans | 173 | 4 |
| NED | Jesper de Jong | 178 | 5 |
 SWE | Elias Ymer | 179 | 6 |
| NED | Jelle Sels | 200 | 7 |
 POR | Frederico Ferreira Silva | 223 | 8 |
The following players received wildcards into the singles main draw:
Tomasz Berkieta 
Dali Blanch Martyn PawelskiThe following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Jesper de Jong def. 
Benjamin Hassan 6–3, 6–3. Théo Arribagé / Luca Sanchez def. 
Anirudh Chandrasekar / Vijay Sundar Prashanth 6–4, 6–4.
