| Nonamesset Island | |
| Pushpin Map: | Massachusetts#USA |
| Coordinates: | 41.5084°N -70.687°W[1] |
| Total Islands: | 1 |
| Area Sqmi: | .54 |
| Elevation Ft: | 52 |
| Country: | United States |
| Country Admin Divisions Title: | State |
| Country Admin Divisions Title 1: | County |
Nonamesset Island is the most easterly of the Elizabeth Islands of Dukes County, Massachusetts, United States. The island has a land area of 1.398km2 or 345.5 acres) and was uninhabited as of the 2000 census.[2] The island is part of the town of Gosnold, Massachusetts.
Painter Robert Swain Gifford was born on the island in 1840.[3]