| Official Name: | Rock Rift, New York |
| Settlement Type: | Hamlet |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Delaware |
| Subdivision Type3: | Town |
| Subdivision Name3: | Tompkins |
| Pushpin Map: | New York |
| Pushpin Map Caption: | Location within the state of New York |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1289 |
| Elevation M: | 393 |
| Coordinates: | 42.0923°N -75.1918°W[1] |
| Postal Code Type: | ZIP code |
Rock Rift was a hamlet in Delaware County, New York, United States. It was located southwest of Walton on the bank of the West Branch Delaware River.
Rock Rift was a hamlet taken by eminent domain by New York City to build the Cannonsville Reservoir. There is a hiking trail that passes through the former settlement, constructed and maintained by the Finger Lakes Trail Conference (FLTC). Crumbling pavement from portions of old NYS Route 10 descend into the waters of the reservoir. Some bluestone front steps to homes and businesses remain, as the heart of the village was mostly located above the current waterline of Cannonsville Reservoir. The reservoir dams a portion of the West Branch of the Delaware River and provides potable water for New York City.[2]