| Cottageville, New Jersey | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA New Jersey Middlesex County#USA New Jersey#USA |
| Pushpin Label: | Cottageville |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of Cottageville in Middlesex County Inset: Location of county within the state of New Jersey |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Middlesex |
| Subdivision Type3: | Township |
| Subdivision Name3: | South Brunswick |
| Elevation Ft: | 98 |
| Coordinates: | 40.4103°N -74.4844°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 883010 |
| Unit Pref: | imperial |
Cottageville is an unincorporated community located within South Brunswick Township in Middlesex County, in the U.S. state of New Jersey. The settlement is located along Davidson Mill Road (formerly named Cottageville Road) at the former Newark–Trenton Fast Line right-of-way, now a PSE&G transmission line corridor. The trolley stop at the settlement allowed for summer cottages to be built in the area leading to the area's name.[1] Today, some of the older homes remain in addition to a summer camp, forest land, and PSE&G's Deans substation.