Ohio - Area of significance: Agriculture
| Akey, James, Farm |
| Andres, Charles, House |
| Anna-Dean Farm |
| Armstrong Farm |
| Armstrong, Joseph, Farm |
| Arnold Homestead |
| Athens County Infirmary |
| Athens State Hospital Cow Barn |
| Ault-Weygandt Farm |
| Austin-Magie Farm and Mill District |
| Bair, Jacob H., House |
| Barber, O. C., Barn No. 1 |
| Barber, O. C., Colt Barn |
| Barber, O. C., Creamery |
| Barber, O. C., Machine Barn |
| Barber, O. C., Piggery |
| Baumgardner, William, House and Farm Buildings |
| Beatty, Louis, House |
| Bell, Hiram, Farmstead |
| Bieber, George, House and Farm |
| Botzum Farm |
| Bradford, Henry, Farm |
| Bradford, Robert, House |
| Bramble, Ayres L., House |
| Bretz Farm |
| Brookdale Farm |
| Broom-Braden Stone House |
| Brown-Gorman Farm |
| Bulen, Granville M., House and Farm Complex |
| Burnham, Henry, House |
| Burton Village Historic District |
| Chaney, O. P., Grain Elevator |
| Christman, Daniel, Homestead |
| Coffman, Fletcher, House |
| Cofta, Albert, Farmstead |
| Cook, John, Farm |
| Coonrad, Jonas, House |
| Crane, Jonathan, Farm |
| Cranz, Edward, Farm |
| Cranz, William and Eugene, Farm |
| Crittenden Farm |
| Crumrine, John, Farm |
| Crumrine, Michael, Farm |
| Crystal Lake Stock Farm |
| Curry Farm Historic District |
| Dairy Barn–Boys’ Industrial School |
| Danford, Samuel, Farm, Church and Cemetery |
| Davis, James, Barn |
| Dayton Women's Club |
| Dean Family Farm |
| Deardoff, Daniel L., House |
| Decker, Elias, Farmhouse |
| Deerlick Farm |
| Deerwood Farm |
| Deitz, Samuel, Farmhouse |
| Demand-Gest House |
| Domestic Arts Hall And Flower Hall |
| Duffy, Michael, Farm |
| Dunlap, William K., House |
| Elizabeth Township Rural Historic District |
| Elmdale Grange Hall 2162 and Watson One-Room School |
| Finley, Ebenezer, House |
| Fleming-Hoffman Farm |
| Floral Hall |
| Floral Hall |
| Flory, Joseph, House |
| Fort, The |
| Foster-Gram House |
| Fox-Pope Farm |
| Fridley-Oman Farm |
| Friends Boarding School and Ohio Yearly Meetinghouse Historic District |
| Fulton Farm |
| Gartner Mound and Village Site |
| Gaston's Mill-Lock No. 36, Sandy And Beaver Canal District |
| Gates Mills Historic District |
| George-Caldwell-Grum Farm |
| Gilbert-Wilcox House |
| Gish Farmhouses |
| Golden Eagle Wine Cellars |
| Greenwood Farm |
| Hartong, Levi J., House and Farm |
| Hertzler, Daniel, House |
| Heter Farm |
| Highbank Farm |
| Hillsboro Historic Business District |
| Howell and Anna Powell Farm |
| Hughes Manor |
| Hunter, Norvall, Farm |
| Hunt-Forman Farm |
| Hunt-Wilke Farm |
| Jersey Independent Order of Odd Fellows Hall |
| Jyurovat Farmstead |
| Kimball House |
| Kindleberger, Frederick, Stone House and Barn |
| Kinney, James, Farmstead |
| Lambert, Jeremiah, House and Barn |
| Lane's Mill Historic Buildings |
| Langstroth Cottage |
| Law, Henry, Farm Historic District |
| Lawndale Farm Complex |
Data from United States Park Service and Wikidata
