Shell is a census-designated place (CDP) in Big Horn County, Wyoming, United States.

The community is named for the abundance of fossil shells located in the area.

Shell is home to the Iowa State University geology field station.

[3] According to the United States Census Bureau, in 2010 the CDP has a total area of 1.1 square miles (2.96 km2), all land.

[5] Residents are in Big Horn County School District 3.