| State: | NV |
| Type: | SR |
| Route: | 399 |
| Alternate Name: | Eagle Picher Mine Road, Pitt Road |
| Map Custom: | yes |
| Map Notes: | SR 399 highlighted in red |
| Length Mi: | 18.184 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | Eagle Picher Mine |
| Direction B: | East |
| Terminus B: | north of Lovelock |
| Established: | 1976 |
| Counties: | Pershing |
| Previous Type: | NV |
| Previous Route: | 398 |
| Next Type: | NV |
| Next Route: | 400 |
State Route 399 (SR 399) is an 18.18miles state highway in Pershing County, Nevada. It connects Eagle-Picher Mine to Lovelock, the nearest town.
SR 399's west terminus is at the entrance to Eagle-Picher Mine, which mines diatomite. SR 399 continues northeast and intersects Seven Troughs Road. SR 399 goes southwest on Seven Troughs Road until it meets SR 854, where it becomes Pitt Road. Pitt Road continues east until it meets North Meridian Road/SR 398 north of Lovelock.
SR 399 was established on July 1, 1976.[2]