| South Fork Crystal River[1] | |
| Source1 Coordinates: | 39.0236°N -107.0519°W |
| Mouth Location: | Confluence with North Fork |
| Mouth Coordinates: | 39.0592°N -107.1039°W |
| Progression: | Crystal—Roaring Fork Colorado |
| Mouth Elevation: | 8894feet |
South Fork Crystal River is a tributary of the Crystal River in Gunnison County, Colorado, United States. The stream's source is the confluence of Rock Creek and the East Fork in the White River National Forest. It flows through Crystal Canyon to a confluence with the North Fork Crystal River that forms the Crystal River.