| 2019 Slovak Open | |
|---|---|
| Date | 4–10 November |
| Edition | 20th |
| Category | ATP Challenger Tour |
| Surface | Hard (indoor) |
| Location | Bratislava, Slovakia |
| Champions | |
| Singles | |
 Dennis Novak | |
| Doubles | |
 Frederik Nielsen /  Tim Pütz | |
The 2019 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 20th edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Bratislava, Slovakia between 4 and 10 November 2019.