| 2018 Marburg Open | |
|---|---|
| Date | 2–8 July |
| Edition | 9th |
| Draw | 32S / 16D |
| Surface | Clay |
| Location | Marburg, Germany |
| Champions | |
| Singles | |
 Juan Ignacio Londero | |
| Doubles | |
 Fabrício Neis /  David Vega Hernández | |
The 2018 Marburg Open was a professional tennis tournament played on clay courts. It was the ninth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Marburg, Germany between 2 and 8 July 2018.