| 2020 Slovak Open | |
|---|---|
| Date | 9–15 November |
| Edition | 21st |
| Category | ATP Challenger Tour |
| Surface | Hard (indoor) |
| Location | Bratislava, Slovakia |
| Champions | |
| Singles | |
 Maximilian Marterer | |
| Doubles | |
 Harri Heliövaara / Emil Ruusuvuori | |
The 2020 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 21st edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Bratislava, Slovakia between 9 and 15 November 2020.