French Island can refer to:
- French Island (Victoria), in Australia
- French Island, Wisconsin, in the United States
- French Island No. 1 and French Island No. 2 in the Ohio River in Kentucky
- French Island, an island in Ellis Pond, Oxford County, Maine, United States
- French Island, a neighbourhood of Old Town, Penobscot County, Maine, United States
- Île-de-France, literally "Isle de France", may refer to several places in French-speaking countries.