| 1977 Dutch Open | |
|---|---|
| Date | 12–18 July |
| Edition | 20th |
| Category | Grand Prix (Two star) |
| Draw | 32S / 16D |
| Prize money | $75,000 |
| Surface | Clay / outdoor |
| Location | Hilversum, Netherlands |
| Venue | 't Melkhuisje |
| Champions | |
| Singles | |
 Patrick Proisy [1] | |
| Doubles | |
 José Higueras / Antonio Muñoz [2] | |
The 1977 Dutch Open was a Grand Prix tennis tournament staged in Hilversum, Netherlands. The tournament was played on outdoor clay courts and was held from 12 July to 18 July 1977. It was the 20th edition of the tournament. Patrick Proisy won the singles title.
