| Duncan Ranges | |
| Country: | Canada |
| Region Type: | Province |
| Region: | British Columbia |
| Parent: | Selkirk Mountains |
| Highest: | Mount Templeman |
| Elevation M: | 3074 |
| Coordinates: | 50.85°N -146°W |
| Map: | Canada British Columbia |
The Duncan Ranges are a subrange of the Selkirk Mountains of the Columbia Mountains in southeastern British Columbia, Canada, located west of the Duncan River, southeast of Revelstoke.