| Lake of the Woods 37B | |
| Official Name: | Lake of the Woods Indian Reserve No. 37B |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 49.3167°N -143°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Kenora |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Animakee Wa Zhing 37 |
| Area Footnotes: | [1] |
| Area Land Km2: | 1.06 |
Lake of the Woods 37B is a First Nations reserve in Kenora District, Ontario. It consists of an island near the Canada–United States border in Lake of the Woods. It is one of the reserves of the Animakee Wa Zhing 37 First Nation.