National Register of Historic Places listings in Washington County, Utah

This is a list of the National Register of Historic Places listings in Washington County, Utah.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Utah, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map.

There are 78 properties and districts listed on the National Register in the county. Of these, 28 are located within Zion National Park and are described in National Register of Historic Places listings in Zion National Park. This list covers the 50 others. One other site in the county was once listed, but has since been removed.