| 2018 Slovak Open | |
|---|---|
| Date | 5–11 November |
| Edition | 19th |
| Category | ATP Challenger Tour |
| Surface | Hard (indoor) |
| Location | Bratislava, Slovakia |
| Champions | |
| Singles | |
 Alexander Bublik | |
| Doubles | |
 Denys Molchanov /  Igor Zelenay | |
The 2018 Slovak Open was a professional tennis tournament played on indoor hard courts. It was the 19th edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Bratislava, Slovakia between 5 and 11 November 2018.