| Lakin Brook | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Lakin Brook |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type4: | County |
| Subdivision Name4: | Delaware |
| Source1: | Pierce Pond |
| Source1 Coordinates: | 41.9303°N -75.1575°W |
| Source1 Elevation: | 1588feet |
| Mouth: | Peas Eddy Brook |
| Mouth Coordinates: | 41.9398°N -75.2093°W[1] |
| Mouth Elevation: | 1171feet |
Lakin Brook is a river in Delaware County, New York. It drains Pierce Pond and flows west, then turns north, then west again before converging with Peas Eddy Brook east-southeast of Peas Eddy.