| State: | TN |
| Type: | Sec |
| Route: | 256 |
| Maint: | TDOT |
| Map Custom: | yes |
| Map Notes: | SR 256 highlighted in red |
| Length Mi: | 10.6 |
| Length Round: | 1 |
| Established: | July 1, 1983[1] |
| Direction A: | South |
| Terminus A: | along the Cheatham-Robertson County line |
| Junction: | Exit 19 in Robertson County |
| Direction B: | North |
| Previous Type: | Sec |
| Previous Route: | 255 |
| Next Type: | Sec |
| Next Route: | 257 |
State Route 256 (SR 256) is a north–south secondary state highway located in northern Middle Tennessee. Except for its southern terminus on US 41A, the route is located almost entirely In western Robertson County.
SR 256's southern terminus is at a junction with US 41A (SR 112) northwest of Pleasant View, which really constitutes Cheatham County’s northern boundary with Robertson County in that area. SR 256 crosses the I-24 corridor at that route's Exit 19 interchange. The secondary route ends in Adams, at a junction with SR 76.[2]