| Wyarno, Wyoming | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA Wyoming#USA |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location within the state of Wyoming |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Wyoming |
| Subdivision Type2: | County |
| Subdivision Name2: | Sheridan |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 3783 |
| Coordinates: | 44.8133°N -106.7739°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 82845 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1597548[1] |
Wyarno is an unincorporated community in central Sheridan County, Wyoming, United States. It lies along Wyoming Highway 336, approximately east of the city of Sheridan, the county seat of Sheridan County.[2] Although Wyarno is unincorporated, it has a post office, with the ZIP code of 82845.[3] Public education in the community of Wyarno is provided by Sheridan County School District #2.
Wyarno lies on the high plains about south of Montana, in the small Dutch Creek valley. The town is about east of the Big Horn Mountains and Bighorn National Forest. There are few populated places to the east of Wyarno. South of town about is Ucross, Wyoming, at the intersection of U.S. Route 14 and U.S. Route 16. Wyarno's elevation is . The BNSF Railway line between Sheridan and Gillette passes by town.[4]
Sheridan Field Station is a weather station near Wyarno.[5] Sheridan Field Station has a cold semi-arid climate (Köppen BSk).