Wyarno is an unincorporated community in central Sheridan County, Wyoming, United States. It lies along WYO 336 east of the city of Sheridan, the county seat of Sheridan County. Its elevation is 3,786 feet (1,154 m), and it is located at 44°48′48″N 106°46′26″W﻿ / ﻿44.81333°N 106.77389°W﻿ / 44.81333; -106.77389 (44.8133063, -106.7739517). Although Wyarno is unincorporated, it has a post office, with the ZIP code of 82845. Public education in the community of Wyarno is provided by Sheridan County School District #2.