Ohio - Area of significance: Transportation
| Ada Pennsylvania Station and Railroad Park |
| Akron-Fulton International Airport Administration Building |
| Anderson Ferry |
| ANTHONY WAYNE Shipwreck |
| Antwerp Norfolk and Western Depot |
| Ashtabula Harbor Light |
| Ashville Depot |
| Athens B & O Train Depot |
| Aurora Train Station |
| Baltimore & Ohio Railroad Terminal |
| Barnesville Baltimore and Ohio Railroad Depot |
| Barnesville Historic District |
| Bates-Cockrem House |
| Bedford Historic District |
| Belle Hall Covered Bridge |
| Belt Line and New York Central Freight House |
| Bennett Schoolhouse Road Covered Bridge |
| Berea Union Depot |
| Bergstresser Covered Bridge |
| Berwick Hotel |
| Big Four Depot |
| Big Four Depot |
| Black River Viaduct, Baltimore And Ohio Railroad |
| Blackwood Covered Bridge |
| "Blaine Hill ""S"" Bridge" |
| BOECKLING, G.A., (side-paddlewheel steamboat) |
| B & O Freight Terminal |
| B & O Railroad Viaduct |
| Bowman Mill Covered Bridge |
| Bradford Junction Interlocking Tower |
| Brewster Railroad YMCA/Wandle House |
| Bright, John, Covered Bridge |
| Broadway Bridge |
| Brown, Jim, Tavern |
| Brown, Samuel N., House |
| Brubaker Covered Bridge |
| Caledonia Bowstring Bridge |
| Caledonia Public Square and North Water Street Historic District |
| Canal Fulton Historic District |
| Canal Warehouse |
| Cascade Locks Historic District |
| Cedar Point Light |
| Christman Covered Bridge |
| Cincinnati and Whitewater Canal Tunnel |
| Cincinnati, Hamilton, and Dayton Railroad Station |
| Cincinnati Union Terminal |
| Cleveland And Pittsburgh Railroad Bridge |
| Cleveland Centre Historic District |
| Cleveland, Columbus, Cincinnati & Indianapolis Railroad Depot |
| Cleveland East Pierhead Light |
| Cleveland West Pierhead Light |
| Clinton Ohio and Erie Canal Historic District-Clinton Lock 2 and 3-Clinton Upper (Lock 2) and Clinton Lower (Lock 3) |
| Coal Run Historic District |
| Columbus, Hocking Valley and Toledo Railway Depot |
| Conneaut Harbor West Breakwater Light |
| Conneaut Light Station Keeper's Dwelling |
| Contract Airmail Route 34 Columbus-Philadelphia Route Marker 2 |
| Day, Erastus, House |
| Dayton Women's Club |
| Detroit Avenue Bridge |
| Detroit-Superior High Level Bridge |
| DONALD B (towboat) |
| Downtown Ashland Historic District |
| Downtown Mount Vernon Historic District |
| Downtown Sandusky Commercial Historic District |
| Dresden Suspension Bridge |
| Eakin Mill Covered Bridge |
| Empire House |
| Erie County Oil Products Co. |
| Euclid Avenue Historic District |
| Euphemia Inn and Tavern |
| Fairmont Creamery Company Ice Cream Building |
| Fairport Harbor West Breakwater Light |
| Falls River Road |
| Ferguson, Andrew, House |
| Firestone Tire and Rubber Company |
| First Concrete Street In U.S. |
| Five Mile House |
| Ford Motor Company Columbus Branch Assembly Plant |
| Fort Ball-Railroad Historic Disrict |
| Furnace Run Aqueduct |
| Gaston's Mill-Lock No. 36, Sandy And Beaver Canal District |
| Geeting Covered Bridge |
| Gendron, Peter, House |
| General U.S. Grant Bridge |
| Gilbert-Sinton Historic District |
| Glendale Historic District |
| Goodyear Airdock |
| Goodyear Tire and Rubber Company Headquarters |
| Green Island Light |
| Gunckel's Town Plan Historic District |
| Harmar Historic District |
| Harper, Rice, House |
| Harra Covered Bridge |
| Harshaville Covered Bridge |
| Harshman Covered Bridge |
| Hawthorn Hill |
| Headley Inn., Smith House And Farm |
| Hercules Motors Corporation Industrial Complex |
| Hildreth Covered Bridge |
Data from United States Park Service and Wikidata
