| 2023 Bratislava Open | |
|---|---|
| Date | 12–18 June |
| Edition | 4th |
| Category | ATP Challenger Tour |
| Surface | Clay |
| Location | Bratislava, Slovakia |
| Champions | |
| Singles | |
 Vitaliy Sachko | |
| Doubles | |
 Ariel Behar /  Adam Pavlásek | |
The 2023 Bratislava Open was a professional tennis tournament played on clay courts. It was the 4th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Bratislava, Slovakia between 12 and 18 June 2023.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 SVK | Alex Molčan | 86 | 1 |
| Alexander Shevchenko | 87 | 2 | |
 ARG | Federico Coria | 96 | 3 |
 HUN | Zsombor Piros | 125 | 4 |
| CZE | Tomáš Macháč | 127 | 5 |
| SVK | Norbert Gombos | 132 | 6 |
| SVK | Lukáš Klein | 133 | 7 |
| SVK | Jozef Kovalík | 143 | 8 |
The following players received wildcards into the singles main draw:
Lukáš Pokorný Peter Benjamín Privara
Fernando Verdasco The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Vitaliy Sachko def. 
Dimitar Kuzmanov 2–6, 6–2, 7–6(7–2). Ariel Behar / Adam Pavlásek def. 
Neil Oberleitner / 
Tim Sandkaulen 6–4, 6–4.
