National Register of Historic Places listings in Franklin County, Ohio

This is a list of the National Register of Historic Places listings in Franklin County, Ohio.

This is a list of the properties and districts on the National Register of Historic Places in Franklin County, Ohio, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in an online map.

There are 330 properties and districts listed on the National Register in the county, including 3 National Historic Landmarks. The city of Columbus is the location of 157 of these properties and districts, including all of the National Historic Landmarks; they are listed separately, while the remaining 173 properties and districts are listed here.