| Official Name: | Duplex, Tennessee |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Tennessee#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Tennessee |
| Subdivision Type2: | County |
| Subdivision Name2: | Williamson |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 758 |
| Coordinates: | 35.7469°N -86.8372°W |
| Area Code: | 615 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1314986 |
Duplex is an unincorporated community in Williamson County, in the U.S. state of Tennessee. It is the location of, or nearest community to, at least two historic sites that are or once were listed on the National Register of Historic Places: the Thompson Store and Maplewood Farm.
The community itself was described as a crossroads community in a 1988 study of historic resources in the county. However, it was deemed not being worthy of listing on the National Register as a historic district, because too many of its older structures had been demolished and replaced.[1]