Pennsylvania - Criteria: C (architecture/engineering)
| Federal Barn |
| Federal Row |
| Federal School |
| Fell, D. Newlin, School |
| Feltons Mill Covered Bridge |
| Feltonville School No. 2 |
| Ferguson, Joseph C., School |
| Ferguson, William, Farm |
| Ferron, John, House |
| Fidelity Mutual Life Insurance Company Building |
| Fidelity-Philadelphia Trust Company Building |
| Fifth Avenue High School |
| Finch Building |
| Findlay Farm |
| Finletter, Thomas K., School |
| Finley, James, House |
| Fireman's Drinking Fountain |
| First Bank of the United States |
| First Church of Christ, Scientist |
| First Methodist Episcopal Church of McKeesport |
| First National Bank in Fleetwood |
| First National Bank of Charleroi |
| First Presbyterian Church of West Chester |
| First Unitarian Church (Additional Data) |
| First Universalish Church of Sharpsville |
| Fischtner Covered Bridge |
| Fisher, Adam, Homestead |
| Fisher, Henry, House |
| Fisher, Maj. Jared B., House |
| Fisher's Lane |
| Fissel's School |
| Fitler School |
| Fitzsimons, Thomas, Junior High School |
| Fleisher, Samuel S., Art Memorial |
| Fleming, Molly, House |
| Florence Apartments |
| Fonthill |
| Fonthill, Mercer Museum and Moravian Pottery and Tile Works |
| Foos, Charles S., Elementary School |
| Ford City Armory |
| Fordhook Farm |
| Ford, James, House |
| Ford Motor Company Assembly Plant |
| Forester's Hall |
| Forest Grove Historic District |
| Forge Hill |
| Forrest, Edwin, House |
| Forrest, Edwin, School |
| Forry House |
| Forry's Mill Covered Bridge |
| Fort Hunter Historic District |
| Fortieth Street Bridge |
| Fort Mifflin |
| Fort Pitt Elementary School |
| Forty Fort Meetinghouse |
| Foster School |
| Fountain Hill Historic District |
| Fountain House |
| Fowlersville Covered Bridge |
| Foxburg Country Club and Golf Course |
| Fox Chase Inn |
| Frankenfield Covered Bridge |
| Frankford Arsenal |
| Frankford Avenue Bridge |
| Frank, Henry S., Memorial Synagogue |
| Franklin and Marshall College Campus Historic District |
| Franklin, Benjamin, School |
| Franklin County Courthouse |
| Franklin County Jail |
| Franklin Furnace Historic District |
| Franklin Historic District |
| Franklin Hose Company No. 28 |
| Franklin Institute |
| Franklin Institute Science Museum |
| Franklin Square |
| Frantz's Bridge |
| Free Quaker Meetinghouse |
| Frehn Bridge |
| French Creek Farm |
| French Creek State Park: Organized Group Camp 4 District |
| French Creek State Park Six Penny Day Use District |
| Frew, John, House |
| Frey, Jacob L., Tobacco Warehouse |
| Frick Building and Annex |
| Fricks Locks Historic District |
| Friedman, Henry B., Tobacco Warehouse |
| Friend, Philip, House |
| Frost, Josiah, House |
| Fulton Building |
| Fulton Elementary School |
| Fulton House |
| Fulton Log House |
| Fulton, Robert, School |
| Funck, Josiah, Mansion |
| Funk, Jacob, House and Barn |
| Furnace Covered Bridge No. 11 |
| Furnace Hills Tenant House |
| Furness, Horace, Junior High School |
| Furness Library |
| Gaddis, Thomas, Homestead |
Data from United States Park Service and Wikidata
