| Steam Mill Branch | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Steam Mill Branch |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type4: | County |
| Subdivision Name4: | Delaware |
| Source1 Coordinates: | 42.2067°N -75.3403°W |
| Mouth: | East Branch Cold Spring Creek |
| Mouth Coordinates: | 42.152°N -75.3549°W[1] |
| Mouth Elevation: | 1316feet |
Steam Mill Branch is a river in Delaware County, New York. It flows into East Branch Cold Spring Creek north of Barbourville.
Steam Mill Branch flows through Steam Mill State Forest. The 5618acres state forest is accessed by Steam Mill Road, Mormon Hollow Road and Carroll Hill Road. It is almost totally forested with plantations and naturally, which will provide good hunting opportunities for most game species. The forest also has hiking and snowmobile trails and limited fishing opportunities on the Steam Mill Branch.[2]