Jay Em is an unincorporated community in northern Goshen County, Wyoming, United States, just below the headwaters of the Rawhide Creek. It lies along U.S. Route 85 north of the city of Torrington, the county seat of Goshen County. Its elevation is 4,590 feet (1,399 m). Although Jay Em is unincorporated, it has a post office, with the ZIP code of 82219.
The center of the community is included in the Jay Em Historic District.
Public education in the community of Jay Em is provided by Goshen County School District #1.