This is a list of the National Register of Historic Places listings in Allegheny County, Pennsylvania.
This is intended to be a complete list of the properties and districts on National Register of Historic Places in Allegheny County, Pennsylvania, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.
There are 254 properties and districts listed on the National Register in the county, including 10 National Historic Landmarks. Pittsburgh is the location of 182 of these properties and districts, including 5 National Historic Landmarks; they are listed separately, while the properties and districts elsewhere in the county, including 5 National Historic Landmarks, are listed here. Four properties are split between Pittsburgh and other parts of the county.