| Route information | ||||
|---|---|---|---|---|
| Maintained by TDOT | ||||
| Existed | October 1, 1923–present | |||
| Location | ||||
| Country | United States | |||
| State | Tennessee | |||
| Highway system | ||||
| ||||

State Route 6 (SR 6) is a state highway that is unsigned. It travels through the central part of the U.S. state of Tennessee from Lawrence County to Sumner County. The highway is a companion route to the following U.S. Highways:

Most of SR 6 is a primary highway; however, between SR 397 in Franklin and SR 254 right past the Davidson County line to SR 155 are all the areas where SR 6 is secondary. There is ambiguity between the two Davidson County Functional Classification Maps (19b & 19a) and the TDOT Traffic Map information is not consistent designations of the Primary and Secondary route in Davidson County.