| Mill Brook | |
|---|---|
&sq=&lang=&file=File:USA_New_York_relief_location_map.svg)  Location of the mouth of Mill Brook | |
| Location | |
| Country | United States |
| State | New York |
| Physical characteristics | |
| Mouth | Unadilla River |
• coordinates | 42°37′33″N 75°19′40″W / 42.62586°N 75.327694°W |
Mill Brook is a river in Chenango County, New York. It flows into Unadilla River north of New Berlin.