# List of U.S. Highways in Wyoming

The U.S. Highways in Wyoming are the segments of the United States Numbered Highway System owned and maintained by the Wyoming Department of Transportation.

## List

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes |
| US 12 | — | — | US 12 at Montana state line | US 12 at South Dakota state line | — | — | US 12 originally went through Wyoming but does not |
| US 14 | 449.21 | 722.93 | Yellowstone National Park | I-90 / US 14 at the South Dakota line | 01936-01-011936 | current | |
| US 16 | 544.04 | 875.55 | Yellowstone National Park | US 16 at the South Dakota line | — | — | |
| US 18 | 100 | 160 | I-25 / US 20 / US 26 / US 87 in Orin | US 18 at the South Dakota line | 01926-01-011926 | current | |
| US 20 | 433 | 697 | Yellowstone National Park | US 20 at the Nebraska line | 01926-01-011926 | current | |
| US 26 | 454 | 731 | US 26 at the Idaho line | US 26 at the Nebraska line | 01926-01-011926 | current | |
| US 30 | 454.37 | 731.24 | — | — | — | — | Lincoln Highway |
| US 85 | — | — | — | — | — | — | |
| US 87 | — | — | — | — | — | — | |
| US 89 | — | — | — | — | — | — | |
| US 116 | — | — | — | — | — | — | |
| US 185 | — | — | — | — | — | — | Replaced by US 87 |
| US 187 | — | — | — | — | — | — | |
| US 189 | — | — | — | — | — | — | |
| US 191 | — | — | — | — | — | — | |
| US 212 | — | — | — | — | — | — | Beartooth Highway |
| US 216 | — | — | — | — | — | — | |
| US 285 | — | — | — | — | — | — | |
| US 287 | — | — | — | — | — | — | |
| US 310 | 47.93 | 77.14 | — | — | — | — | |
| US 312 | — | — | — | — | — | — | |
| US 320 | — | — | — | — | — | — | |
| US 420 | — | — | — | — | — | — | |
| US 789 | — | — | Colorado state line near Baggs | Montana state line near Frannie | — | — | Proposed, but never commissioned as a U.S. Highway. Designation only existed as WYO 789. |
| Former ||||||||

## Special routes

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes |
| US 14A | 103 | 166 | US 14 in Cody | US 14 in Burgess Junction | 01936-01-011936 | current | |
| US 14 Bus. | — | — | — | — | — | — | Served Sheridan |
| US 16 Bus. | — | — | — | — | — | — | Serves Newcastle |
| US 16 Truck | — | — | — | — | — | — | Serves Newcastle |
| US 20 Alt. | — | — | Idaho-Wyoming state line | Jackson | — | — | |
| US 20 Bus. | — | — | Mountain View | Casper | — | — | |
| US 20 Byp. | — | — | Mountain View | Casper | — | — | |
| US 20 Bus. | — | — | — | — | — | — | Serves Douglas |
| US 20 Byp. | — | — | — | — | — | — | Served Manville |
| US 26 Bus. | — | — | Mountain View | Casper | — | — | |
| US 26 Byp. | — | — | Mountain View | Casper | — | — | |
| US 26 Bus. | — | — | — | — | — | — | Serves Douglas |
| US 30 Byp. | — | — | Kemmerer | Diamondville | — | — | |
| US 30 Bus. | — | — | — | — | — | — | Serves Green River |
| US 30 Bus. | — | — | — | — | — | — | Serves Rock Springs |
| US 30 Bus. | — | — | — | — | — | — | Serves Rawlins |
| US 30 Bus. | — | — | Pine Bluffs | Nebraska-Wyoming state line | — | — | |
| US 85 Alt. | — | — | Mule Creek Junction | Wyoming-South Dakota state line | — | — | |
| US 87 Bus. | — | — | — | — | — | — | Serves Cheyenne |
| US 87 Bus. | — | — | — | — | — | — | Serves Wheatland |
| US 87 Bus. | — | — | — | — | — | — | Serves Douglas |
| US 87 Bus. | — | — | — | — | — | — | Serves Casper |
| US 87 Bus. | — | — | — | — | — | — | Serves Buffalo |
| US 87 Bus. | — | — | — | — | — | — | Serves Sheridan |
| Temp. US 89 | — | — | Wyoming-Utah state line | Hoback | — | — | |
| US 189 Bus. | — | — | — | — | — | — | Serves Evanston |
| US 287 Bus. | — | — | — | — | — | — | Serves Rawlins |
| US 287 Byp. | — | — | — | — | — | — | Serves Rawlins |
| Former ||||||||