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   Signage for U.S. Highway 16, U.S. Highway 14A and U.S. Highway 191 | |
| Highway names | |
|---|---|
| US Highways | U.S. Highway X (US X) |
| System links | |
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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.
| 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 | 1936 | current | ||
 US 16 | 471 | 758 | 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 | 1926 | current | ||
 US 20 | 433 | 697 | Yellowstone National Park | US 20 at the Nebraska line | 1926 | current | ||
 US 26 | 454 | 731 | US 26 at the Idaho line | US 26 at the Nebraska line | 1926 | current | ||
 US 30 | 454.37 | 731.24 | US 30 at the Idaho line | US 30 at the Nebraska line | — | — | Lincoln Highway | |
 US 85 | 256 | 412 | US 85 at the Colorado line | US 85 at the South Dakota line | — | — | ||
 US 87 | — | — | I-25/US 87 at the Colorado line | I-90/US 87 at the Montana line | — | — | ||
 US 89 | — | — | — | — | — | — | ||
 US 116 | — | — | — | — | — | — | ||
 US 185 | — | — | — | — | — | — | Replaced by US 87 | |
 US 187 | — | — | — | — | — | — | ||
 US 189 | 197.806 | 318.338 | US 189 at the Utah line | US 26/US 89/US 191 in Jackson | 1939 | current | ||
 US 191 | 181.14 | 291.52 | US 191 at the Utah line | US 191 at the Montana line | 1926 | current | ||
 US 212 | — | — | US 212 at the Montana line | US 212 at the Montana line | — | — | Beartooth Highway | |
 US 216 | — | — | — | — | — | — | ||
 US 285 | — | — | — | — | — | — | ||
 US 287 | — | — | US 287 at the Colorado state line | Yellowstone National Park in Teton County | — | — | ||
 US 310 | 47.93 | 77.14 | US 14/US 16/US 20/WYO 789 in Greybull | US 310 at the Montana line | — | — | ||
 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. | |
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| 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 | 1936 | 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 | |
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Media related to U.S. Highways in Wyoming at Wikimedia Commons |
