Ohio - Criteria: A (event)
| Fairview Public School Annex |
| Fallen Timbers Battlefield |
| Falls Stamping and Welding Building |
| Federal Building |
| Federal Knitting Mills Building |
| Federal Land Office |
| Feick Building |
| Fenway Hall |
| Fenwick Club Annex |
| Findlay Market Building |
| First Church of Christ in Euclid |
| First Church of Christ, Scientist |
| First Congregational Church And Lexington School |
| First National Bank Building |
| First National Bank Tower |
| First Presbyterian Church |
| First Presbyterian Church |
| First Reformed and First Lutheran Churches |
| First Universalist Church of Olmsted |
| Fitz Randolph-Rogers House |
| Five Mile House |
| Floral Hall |
| Floral Hall |
| Floraville Historic District |
| Florence Corners School |
| Ford, Edward, Plate Glass Company Employee Relations Building |
| Ford Motor Company Cincinnati Plant |
| Ford Motor Company Cleveland Plant |
| Forest Hill Realty Sales Office |
| Fort Defiance Park |
| Fort Hayes |
| Fort Jefferson Site |
| Fort Laurens Site |
| Fort Meigs |
| Fort Piqua Hotel |
| Fort Recovery Site |
| Fort, The |
| Fountain Hotel, The |
| Fox Hollow |
| Fox's Brewery-Diamond Wine Co. |
| Franklin College Building No. 5 |
| Franklin Hotel |
| Franklin Park Conservatory |
| Franklinton Apartments at Broad and Hawkes |
| Franklinton Apartments at State and May |
| Franklin Township Hall |
| Frazee, Stephen, House |
| Free Will Baptist Church Of Auburn |
| Friends Meetinghouse |
| Fuller-Bramley House |
| Fulton Farm |
| Fulton-Presbyterian Cemetery |
| Furnace Run Aqueduct |
| Gabel, Daniel, House |
| Gaetz Music House |
| Garfield-Broad Apartments |
| Garlick, Richard, House |
| Garst House |
| Garver Brothers Store |
| Gaskins-Malany House |
| Gast, Matthias, House and General Store |
| Gaston's Mill-Lock No. 36, Sandy And Beaver Canal District |
| Gates Mills Methodist Episcopal Church |
| Geeting Covered Bridge |
| Gendron, Peter, House |
| General Hospital Nurses' Home |
| George-Caldwell-Grum Farm |
| Georgetown Historic District |
| Georgetown Public School |
| Gertenslager Carriage and Wagon Company |
| Gilbert-Sinton Historic District |
| Gilbert-Wilcox House |
| Gish Farmhouses |
| Glendale Cemetery |
| Glendale Historic District |
| Glendale Police Station |
| Glen Echo Historic District |
| Globe Iron Works Building |
| Globe Machine and Stamping Company |
| Godman, H.C., Co. Building |
| Godwin-Knowles House |
| Golden Eagle Wine Cellars |
| Golden Lamb |
| Goll Homestead |
| Gooding House and Tavern |
| Goodyear Airdock |
| Goodyear Hall-Ohio Savings and Trust Company |
| Goodyear Tire and Rubber Company Headquarters |
| Gould Block |
| Grace Episcopal Church |
| Grafton School |
| Grand Army of the Republic Memorial Hall |
| Grand Pacific Hotel |
| Grandview Cemetery |
| Grant-Deneau Tower |
| Grant, William H., House |
| Graphic Arts Building |
| Great Western Schoolhouse |
| Greenhills Historic District |
| Green Island Light |
Data from United States Park Service and Wikidata
