| State: | TN |
| Type: | Sec |
| Route: | 422 |
| Map Custom: | yes |
| Map Notes: | TN 422 highlighted in red |
| Alternate Name: | Long Island Road |
| Length Mi: | 2.38 |
| Direction A: | South |
| Terminus A: | at the Alabama state line |
| Direction B: | North |
| Terminus B: | in New Hope |
| Counties: | Marion |
| Previous Type: | Sec |
| Previous Route: | 421 |
| Next Type: | Sec |
| Next Route: | 423 |
State Route 422 (SR 422), also known as Long Island Road, is a short 2.38adj=midNaNadj=mid north-south state highway located entirely in the city of New Hope, Tennessee.[1] It connects various neighborhoods of the city with its main business district and the Alabama state line. SR 422 is a winding two-lane road for its entire length.[2]