| Ash Run | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Ash Run |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type4: | County |
| Subdivision Name4: | Delaware |
| Source1 Coordinates: | 42.0553°N -75.0789°W |
| Mouth: | Trout Brook |
| Mouth Coordinates: | 42.0468°N -75.0641°W[1] |
| Mouth Elevation: | 1096feet |
Ash Run is a river in Delaware County, New York. It flows into Trout Brook north-northeast of Shinhopple.