| Grosse Caye | |
| Map: | Haiti |
| Native Name: | La Grosse Caye |
| Native Name Link: | French language |
| Location: | Baie d'Aquin |
| Coordinates: | 18.2167°N -73.4°W |
| Total Islands: | 1 |
| Major Islands: | 1 |
| Area Km2: | 2 |
| Elevation M: | 3 |
| Country Admin Divisions Title: | Department |
| Country Admin Divisions: | Sud |
| Country Admin Divisions Title 1: | Arrondissement |
| Country Admin Divisions 1: | Aquin |
| Population: | Approximately 500 |
Grosse Caye (ht|Gwòskay)[1] is an island of Haiti[2] which is located in Sud, east of Île-à-Vache which is located a bit further west, in the Baie des Cayes (Bay of the Cayes) and north of the Canal du Sud.