| Flatrock Hill | |
| Map: | Massachusetts#USA |
| Elevation Ft: | 266 |
| Location: | Cape Cod, Massachusetts |
| Coordinates: | 41.7546°N -70.5384°W[1] |
| Topo: | USGS Sagamore |
Flatrock Hill is a mountain in Barnstable County, Massachusetts. It is located on southwest of Sagamore in the Town of Bourne. Discovery Hill is located northwest and Faunces Mountain is located east of Flatrock Hill.