Ohio - Area of significance: Community Planning
| Alameda Flats, The |
| Albert Krumm Apartments Historic District |
| Alexandra, The |
| Ambassador, The |
| Ambler Heights Historic District |
| Ashtabula County Courthouse Group |
| Bank Block Building |
| Barberton Downtown Historic District |
| Barber-Whitticar House |
| Belmont Historic District |
| Birckhead Place Historic District |
| Boeckling, G. A., House |
| Boston Mills Historic District |
| Brick Quarters Historic District |
| Broad Street Apartments |
| Broad Street Christian Church |
| Bromwell, Jacob, House |
| Bronson Place |
| Brookfield Center Historic District |
| Brooklyn Centre Historic District |
| Brown, John Hartness, House |
| Building at 3101 Euclid Avenue |
| Building at 620-622 Vine Street |
| Cable Park Historic District |
| Caldwell, Samuel, House |
| Cambridge Arms |
| Carroll, John, University North Quad Historic District |
| Central Branch, National Home for Disabled Volunteer Soldiers |
| Central High School |
| Cermak Building |
| Chagrin Falls Triangle Park Commercial District |
| Cleveland Mall |
| Cleveland Municipal Stadium |
| Cleveland Public Square |
| Clifton Park Lakefront District |
| Clifton Park South Historic District |
| Cole Avenue Housing Project Historic District |
| College Hill Historic District |
| College of Wooster |
| Colony Burying Ground, Old |
| Commodore Apartment Building |
| Commodore Hotel, The |
| Cooley Farms |
| Crandall Park-Fifth Avenue Historic District |
| Crescent, The |
| Cuyahoga Falls Downtown Historic District |
| Dayton Street Historic District |
| Dayton View Historic District |
| Dayton View Triangle Historic District |
| Del Monte Apartments |
| Downtown Dayton Historic District |
| Downtown Ironton Historic District |
| Downtown Mansfield Historic District |
| Dunham, Hezekiah, House |
| Eagle Point Colony Historic District |
| East Boulevard Historic District |
| East Broad Street Commercial Building |
| East Broad Street Historic District |
| East Broad Street Presbyterian Church |
| East End Historic District |
| Eastgate Apartments Historic District |
| East Main Street Historic District |
| East North Broadway Historic District |
| East Side Fire Station |
| East State Street-Elmwood Place Historic District |
| East Toledo Main Street Historic District |
| Englewood Historic District |
| Erie Terminal Building-Commerce Plaza Building |
| Erieview Historic District |
| Erieview Tower |
| Euclid Golf Allotment |
| Euclid Heights Historic District |
| Euclid, The-Seventy-First Street Building |
| Evanston Historic District |
| Everett Historic District |
| Fairhill Road Village Historic District |
| Fairmount Boulevard District |
| Fairview Community Park Historic District |
| Forest Glen Estates Historic District |
| Forest Hill Historic District |
| Forest Hill Realty Sales Office |
| Fowler Center Historic District |
| Franklin Hotel |
| Gallipolis Public Square and Garden Lots Historic District |
| Garfield-Broad Apartments |
| Gartner Mound and Village Site |
| Gates Mills Historic District |
| Gates Mills Village Historic District |
| Gilbert-Sinton Historic District |
| Glendale Historic District |
| Glen Echo Historic District |
| Gould Block |
| Grafton-Rockwood Historic District |
| Grandview Cemetery |
| Grant, A. G., Homestead |
| Grant Deming's Forest Hill Allotment Historic District |
| Grant-Deneau Tower |
| Greenhills Historic District |
| Gross, L.N., Company Building |
| Gunckel's Town Plan Historic District |
Data from United States Park Service and Wikidata
