| Rainy Lake 17A | |
| Official Name: | Rainy Lake Indian Reserve No. 17A |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 48.8667°N -147°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Rainy River |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Naicatchewenin |
| Area Land Km2: | 14.22 |
| Population Footnotes: | [1] |
| Population Total: | 234 |
| Population As Of: | 2021 |
| Population Density Km2: | 16.5 |
| Website: | naicatcheweninfirstnation.ca |
Rainy Lake 17A is a First Nations reserve on Rainy Lake in northwestern Ontario. It is one of the reserves of the Naicatchewenin First Nation.