This is a list of properties and historic districts in Washington that are listed on the National Register of Historic Places. There are at least three listings in each of Washington's 39 counties.
The National Register of Historic Places recognizes buildings, structures, objects, sites, and districts of national, state, or local historic significance across the United States. Out of over 90,000 National Register sites nationwide, more than 1,500 are in Washington.
The following are tallies of current listings by county.[a]