| State: | NV |
| Type: | SR |
| Route: | 773 |
| Alternate Name: | Fish Lake Valley Road |
| Map Custom: | yes |
| Map Notes: | SR 773 highlighted in red |
| Length Mi: | 10.496 |
| Length Round: | 3 |
| Length Ref: | [1] |
| Established: | 1976 |
| Direction A: | South |
| Terminus A: | near Fish Lake Valley |
| Direction B: | North |
| Terminus B: | near Coaldale |
| Previous Type: | SR |
| Previous Route: | 767 |
| Next Type: | SR |
| Next Route: | 774 |
State Route 773 (SR 773) is a 10.496adj=midNaNadj=mid state highway in Esmeralda County, Nevada, United States. Known as Fish Lake Valley Road, the highway was a part of former SR 3A.
SR 773 begins at a junction with State Route 264 north of Fish Lake Valley. The route follows Fish Lake Valley Road northeast to its terminus at U.S. Route 6 (US 6), about 6miles west of Coaldale.
The highway originally composed the northern 10miles of State Route 3A, a route christened in 1933 to connect State Route 15 (now US 6) to Fish Lake Valley and Dyer.[2] SR 3A was replaced by State Route 773 and State Route 264 on July 1, 1976.[3] SR 773 did not appear on state highway maps until 1991.[4]
Mileposts on the highway are a continuation of State Route 264 mileposts.