Ohio - Area of significance: Landscape Architecture
| Adena (Thomas Worthington House) |
| Arrowston |
| Aullwood House and Garden |
| Belleview Heights |
| Birckhead Place Historic District |
| Blossom, Elizabeth B., Subdivision Historic District |
| Bronson Place |
| Central Branch, National Home for Disabled Volunteer Soldiers |
| Cincinnati Street Gas Lamps |
| Clearview Golf Club |
| Dawes Arboretum, The |
| Dayton Art Institute |
| Dayton Country Club |
| Eagle Point Colony Historic District |
| East Boulevard Historic District |
| East River Road Historic District I |
| East River Road Historic District II |
| Fairhill Road Village Historic District |
| Fairmount Boulevard District |
| Findlay Country Club Golf Course |
| Forest Glen Estates Historic District |
| Forest Hill Park |
| Forest Lawn Memorial Park |
| Garlick, Richard, House |
| Gates Mills Historic District |
| Glendale Cemetery |
| Glendale Steps |
| Glen Echo Historic District |
| Grand Lake St. Marys Lighthouse |
| Grandview Cemetery |
| Green Lawn Cemetery |
| Greenwood Cemetery |
| Groesbeck, Grace, House |
| Gwinn Estate |
| Harmar Historic District |
| Holgate Avenue Historic District |
| Inverness Club |
| Iuka Ravine Historic District |
| Kendall, Virginia, State Park Historic District |
| Kingwood Center |
| Krippendorf Estate |
| Marietta Historic District |
| Miami Valley Golf Course and Clubhouse |
| Mill Creek Park Historic District |
| Mill Creek Park Suspension Bridge |
| Mount Airy Forest |
| Near Northside Historic District |
| Nela Park |
| Oakdale Cemetery Historic District |
| Ohio State Normal College At Kent |
| Old Beechwold Historic District |
| Old West End District |
| Pebblebrook Farm House and Gardens |
| Raemelton Farm Historic District |
| Riverview |
| Rockefeller Park and Cleveland Cultural Gardens Historic District |
| Rockefeller Park Bridges |
| Rush Creek Village Historic District |
| Shaker Village Historic District |
| Soldiers Memorial Parkway and McKinley Memorial Parkway |
| Springdale |
| Springfield Country Club |
| Spring Grove Cemetery |
| Spring Grove Cemetery |
| Stan Hywet Hall-Frank A. Seiberling House |
| Stewart, Harry Bartlett, Property |
| Taft Museum |
| Telling, William E., House |
| Union Cemetery-Beatty Park |
| United Colored American Cemetery |
| Upper Arlington Historic District |
| Village of Mariemont |
| Wade Park District |
| Washington Cemetery Historic District |
| Wells-Clark-Strouss House |
| West Main Street District |
| Westmoreland Historic District |
| White, Walter C., Estate |
| Woodland Cemetery |
| Woodland Cemetery Association of Dayton Historic District |
| Woodlawn Cemetery |
| Wright Brothers Hill-Memorial |
| Youngstown Country Club |
| Youngstown Sheet and Tube Company Housing |
| Zoar Historic District |
| Zoar Historic District |
Data from United States Park Service and Wikidata
