Ohio - Criteria: B (person)
| Crabill, David, House |
| Crafts William H., House |
| Crane, Jonathan, Farm |
| Cranz, William and Eugene, Farm |
| Crawford, Col., Burn Site Monument |
| Crescent Hill |
| Cronenwett, Georg, House |
| Culbertson, William, House |
| Curtis, Walter, House |
| Dall, Andrew, Jr. and James, Houses |
| Dana, Marcus, House |
| Darrow, Clarence, Octagon House |
| Davey, John, House |
| Dawes Arboretum, The |
| Day, Erastus, House |
| Dayton Daily News Building |
| Dayton, James, House |
| Dayton, James, House, II |
| Dayton Women's Club |
| Deerwood Farm |
| Deming, Col. Simeon, House |
| Deuscher, Henry P., House |
| Doan House |
| Downing, John, Jr., House |
| Dublin Veterinary Clinic |
| Dunbar Historic District |
| Dunbar, Paul Laurence, House |
| Duncarrick |
| Dunham, Hezekiah, House |
| Dunlap, William K., House |
| Earley-Hartzell House |
| East Second Street District |
| East Town Street Historic District |
| Edgecliff Area Historic Group |
| Edison, Thomas Alva, Birthplace |
| Edwards Gymnasium/Pfieffer Natatorium |
| Edwards, John Stark, House |
| Engels, Herman, House |
| Engineers Club of Dayton |
| Evans, Wilson Bruce, House |
| Everal, John W., Farm Buildings |
| Fabing, Frederick, House |
| Facer's Store |
| Federalton |
| Ferguson, Andrew, House |
| Finney-Darrah House |
| First Concrete Street In U.S. |
| First Presbyterian Church of Wapakoneta |
| First Unitarian Church Of Marietta |
| Fledderjohann, H. E., House, Doctor's Office and Summer Kitchen |
| Flory, Joseph, House |
| Follett-Moss-Moss Residences |
| Forsythe-Puhl House |
| Foster, Claud, House |
| Frank, Charles, House And Store |
| Friedlander, Abraham J., House |
| Friendly Grove |
| Fuller, Frances Ensign, House |
| Fulton-Presbyterian Cemetery |
| Gaensslen, Phillip, House |
| Galigher, James, House |
| Gantz Homestead |
| Gardner House |
| Garfield, Milton, House |
| Garford, Arthur L., House |
| Gast, Matthias, House and General Store |
| Gates, Holsey, House |
| Gatewood |
| Gayman, Christian, House |
| Gelpi, Eleanor A., House |
| Gendron, Peter, House |
| German Village Historic District |
| Giddings, Joshua Reed, Law Office |
| Gilbert, Jane, House |
| Glamorgan |
| Glenn, John, Boyhood Home |
| Godfrey, Sen. Thomas J., House |
| Gorsuch, Ernest J., House |
| Grant, A. G., Homestead |
| Grant, Ulysses S., Boyhood Home |
| Greenwood Farm |
| Griffin, A. B.,-O. H. Griffin House |
| Griffin, Alexander B., House |
| Gruenwald Convent |
| Gruen Watch Company-Time Hill |
| Gwinn Estate |
| Haines, Frank, House |
| Hamilton-Ickes House |
| Hanby, Benjamin, House |
| Hanitch-Huffman House |
| Hannaford, Samuel, House |
| Hanna House |
| Hanna, Howard M., Jr., House |
| Harding-Jones Paper Company District |
| Harding Tomb |
| Harding, Warren G., House |
| Harmar Historic District |
| Harper, Rice, House |
| Harper, William Rainey, Log House |
| Harrison, Gen. William Henry, Headquarters |
Data from United States Park Service and Wikidata
