Big Island 31F | |
|---|---|
| Big Island Indian Reserve No. 31F | |
  Big Island 31F | |
| Coordinates: 49°10′N94°39′W / 49.167°N 94.650°W | |
| Country |  Canada |
| Province |  Ontario |
| District | Rainy River |
| First Nation | Naongashiing |
| Area | |
| • Land | 3.54 km2 (1.37 sq mi) |
Big Island 31F is a First Nations reserve on Big Island in Lake of the Woods, northwestern Ontario, Canada. It is one of the reserves of the Anishnaabeg of Naongashiing.
