| 1990 Rosmalen Grass Court Championships | |
|---|---|
| Date | 11–17 June |
| Edition | 1st |
| Category | ATP World Series |
| Draw | 32S / 16D |
| Prize money | $225,000 |
| Surface | Grass / outdoor |
| Location | Rosmalen, Netherlands |
| Champions | |
| Singles | |
 Amos Mansdorf[1] | |
| Doubles | |
 Jakob Hlasek /  Michael Stich[2] | |
The 1990 Continental Grass Court Championships was a men's ATP-tennis tournament held in Rosmalen, Netherlands. It was played on outdoor grass courts and was part of the ATP World Series. It was the inaugural edition of the tournament and was held from 11 June through 17 June 1990. Unseeded Amos Mansdorf won the singles title.
- ^ "1990 Rosmalen – Singles draw". Association of Tennis Professionals (ATP).
- ^ "1990 Rosmalen – Doubles draw". Association of Tennis Professionals (ATP).