Ohio - Area of significance: Industry
| Adams Bag Company Paper Mill and Sack Factory |
| Adams, George W., House |
| Alkemeyer Commercial Buildings |
| Alliance Clay Product Company |
| American Can Company Building |
| Amherst Town Hall |
| Anderson-Shaffer House |
| Astrup Company Building, The |
| Augspurger Paper Company Rowhouse #1 |
| Aurora Center Historic District |
| Austin-Magie Farm and Mill District |
| Baldwin, Joseph W., House |
| Barnesville Historic District |
| Barr House |
| Bavarian Brewery |
| Bazore Mill |
| Bear's Mill |
| Beatty Glass Company |
| Beckett-Manrod House |
| Bell, C.S., Foundry and Showroom |
| Bell Mansion |
| Bell's First Home |
| Bell's Opera House |
| Belmont Historic District |
| Benninghofen House |
| Berry Brothers Bolt Works |
| B.F. Goodrich Company Historic District |
| Bieber, George, House and Farm |
| Birdtown Historic District |
| Black, H., and Company Building |
| Boneyfiddle Commercial Disrict |
| Bookwalter, Francis, House |
| Born Capital Brewery Bottling Works |
| Boss Manufacturing Company, The |
| Bowman's Distillery |
| Bradford Shoe Company Building |
| Broadway Building |
| Brooks, James, House |
| Bruce-Macbeth Engine Company |
| Brumberg Building |
| Buckeye Furnace |
| Budd Dairy Company |
| Buehl House |
| Burrell, Jabez and Robbins, House and Cheese Factory |
| Bush Street Historic District |
| Canal Fulton Historic District |
| Carkhuff, Stacy G., House |
| Cascade Locks Historic District |
| Catawba Island Wine Company |
| Cawood, Richard L., Residence |
| Champion Coated Paper Company |
| Chuckery Race |
| Cincinnati East Manufacturing and Warehouse District |
| Cincinnati Enquirer Building |
| Cisler Terrace |
| City Mills Building |
| Cleveland Centre Historic District |
| Cleveland Worsted Mills Company |
| Cleveland Worsted Mills Redfern Mill |
| Clutts House |
| Coal Run Historic District |
| Columbus Carriage Manufacturing Co. - Seagrave Co. Buildings |
| Cooke, Jay, House |
| Cote Bonneville |
| Cottage Hill Farm |
| Craft Master Building |
| Crescent Hill |
| Crist Tavern Annex-Millworkers Boarding House |
| Crosley Building |
| Culbertson, William, House |
| Dall, Andrew, Jr. and James, Houses |
| Davis Mill |
| Day, Erastus, House |
| Dayton-Campbell Historic District |
| Dayton Motor Car Company Historic District |
| Dayton Power and Light Building Group |
| Dayton View Historic District |
| Deeds' Barn |
| Delco Building |
| Detrick Milling and Distilling Company |
| Deuscher, Henry P., House |
| DeVilbiss Manufacturing Building |
| Diamond Match Historic District |
| DONALD B (towboat) |
| Downtown Tiffin Historic District |
| East Liverpool Pottery |
| East Main Street Historic District |
| East Third Street Historic District |
| E.F. Hauserman Co. Administration, Engineering & Research Building |
| Elson-Magnolia Flour Mill |
| Engels And Krudwig Wine Company Buildings |
| Engels, Herman, House |
| Erie Railroad Cleveland Powerhouse |
| Factory Site |
| Falls Stamping and Welding Building |
| Federal Knitting Mills Building |
| Fifth and Lawrence Streets Residential District |
| Fire Blocks Historic District |
| Firestone Tire and Rubber Company |
| Ford, Edward, Plate Glass Company Employee Relations Building |
Data from United States Park Service and Wikidata
