| 2021 Dutch Open | |
|---|---|
| Date | 12 – 18 July |
| Surface | Clay / outdoor |
| Location | Amersfoort, Netherlands |
| Champions | |
| Singles | |
 Tallon Griekspoor | |
| Doubles | |
 Luca Castelnuovo /  Manuel Guinard | |
The 2021 Dutch Open, also known by its sponsored name Van Mossel Kia Dutch Open, was a professional tennis tournament played on clay courts. It was the second edition of the Challenger tournament which was part of the 2021 ATP Challenger Tour. It took place in Amersfoort, Netherlands between 12 and 18 July 2021.