| Ellacoya State Park | |
| Photo Width: | 280 |
| Map: | New Hampshire#USA |
| Location: | Gilford, New Hampshire, United States |
| Coords: | 43.5694°N -71.3547°W |
| Established: | 1956 (opened 1958) |
| Designation: | New Hampshire state park |
| Administrator: | New Hampshire Division of Parks and Recreation |
| Website: | Ellacoya State Park |
Ellacoya State Park is a public recreation area located on the southwest shore of Lake Winnipesaukee in Gilford, New Hampshire. The state park has of beachfront, swimming, boating, picnicking, and campground.