Pennsylvanie
Îles commençant par m
États-Unis
- Maple Island
- Marshall Island
- Martys Island
- Masons Island
- McCloskey Island
- McCormicks Island
- McElhaneys Island
- McGuire Island
- Mead Island
- Menches Island
- Millstone Island
- Money Island
- Monocanock Island
- Montgomery Island (historical)
- Moon Island
- Moonbeam Island
- Mount Johnson Island
- Murphy Island