| 2018 Reinert Open | |
|---|---|
| Date | 9–15 July |
| Edition | 11th |
| Category | ITF Women's Circuit |
| Prize money | $60,000 |
| Surface | Clay |
| Location | Versmold, Germany |
| Champions | |
| Singles | |
 Olga Danilović | |
| Doubles | |
 Pemra Özgen /  Despina Papamichail | |
The 2018 Reinert Open was a professional tennis tournament played on outdoor clay courts. It was the eleventh edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Versmold, Germany, on 9–15 July 2018.