| Peckham Brook | |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location of the mouth of Peckham Brook |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Source1 Coordinates: | 42.3644°N -75.4425°W |
| Mouth: | Unadilla River |
| Mouth Coordinates: | 42.3329°N -75.4049°W[1] |
| Mouth Elevation: | 961feet |
Peckham Brook is a river in Chenango County, New York. It flows into Unadilla River northwest of Sidney and west-northwest of Mount Moses.