| Pine Mountain Branch | |
| Pushpin Map: | USA New York#USA |
| Pushpin Map Caption: | Location of the mouth of Pine Mountain Branch in New York |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type3: | County |
| Subdivision Name3: | Delaware |
| Source1 Coordinates: | 42.0878°N -75.0906°W |
| Mouth: | Baxter Brook |
| Mouth Coordinates: | 42.0645°N -75.106°W[1] |
| Mouth Elevation: | 1289feet |
Pine Mountain Branch is a river in Delaware County in New York. It flows into Baxter Brook north of Harvard.