| Sachigo Lake 1 | |
| Official Name: | Sachigo Lake Indian Reserve No. 1 |
| Settlement Type: | Indian reserve |
| Pushpin Map: | Canada Ontario |
| Pushpin Mapsize: | 200 |
| Coordinates: | 53.8667°N -104°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Kenora |
| Subdivision Type3: | First Nation |
| Subdivision Name3: | Sachigo Lake |
| Leader Title: | Chief |
| Leader Name: | Titus Tait |
| Area Land Km2: | 38.10 |
| Population Footnotes: | [1] |
| Population Total: | 450 |
| Population As Of: | 2006 |
| Population Density Km2: | 11.8 |
Sachigo Lake 1 is a First Nations reserve in northwestern Ontario. It is the main reserve of the Sachigo Lake First Nation.