| Eightmile Creek | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type3: | County |
| Subdivision Name3: | Albany |
| Subdivision Type4: | Towns |
| Subdivision Name4: | Rensselaerville |
| Subdivision Type5: | Villages |
| Subdivision Name5: | Medusa |
| Source1 Location: | Westerlo, New York |
| Source1 Coordinates: | 42.5408°N -74.0925°W |
| Mouth: | Tenmile Creek |
| Mouth Location: | Medusa, New York, Rensselaerville, New York |
| Mouth Coordinates: | 42.4314°N -74.1311°W |
| Mouth Elevation: | 0feet |
Eightmile Creek is an 11.8adj=midNaNadj=mid[1] tributary of Tenmile Creek in Albany County, New York. Via Tenmile Creek and Catskill Creek, it is part of the Hudson River watershed. Eightmile Creek runs through the town of Westerlo into the town of Rensselaerville, where it joins Tenmile Creek at the hamlet of Medusa. The creek's source is near Onderdonk Lake by Snyders Corners in Westerlo.