| Obabikong 35B | |
| Official Name: | Obabikong Indian Reserve No. 35B |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 49.25°N -109°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Kenora |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Big Grassy |
| Area Footnotes: | [1] |
| Area Land Km2: | 7.12 |
Obabikong 35B is a First Nations reserve on Aulneau Island in Lake of the Woods, Ontario. It is one of the reserves of the Big Grassy First Nation.