| Alder Creek | |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Source1 Location: | Ulster County, New York |
| Mouth: | Beaver Kill |
| Mouth Location: | Turnwood, New York, Ulster County, New York, United States |
| Mouth Coordinates: | 42.0294°N -74.7065°W |
| Basin Size: | 6.16sqmi |
Alder Creek flows into Beaver Kill by Turnwood, New York.[1]