Pennsylvania - Role: Building
| Conewago Chapel |
| Congregational Store |
| Connell Mansion |
| Connellsville Armory |
| Connellsville Union Passenger Depot |
| Connelly, Clifford B., Trade School |
| Connely-Holeman House |
| Conn, John P., House |
| Conroy Junior High School |
| Consolidated Ice Company Factory No. 2 |
| Consumers Cigar Box Company |
| Continental Building |
| Conwell, Russell H., School |
| Conyngham-Hacker House |
| Cook, Anthony Wayne, Mansion |
| Cook, Col. Edward, House |
| Cooke, Jay, Junior High School |
| Cookes House |
| Cope, Edward Drinker, House |
| Coraopolis Armory |
| Coraopolis Railroad Station |
| Corbley, John, Farm |
| Corker Hill |
| Cornwall & Lebanon Railroad Station |
| Corry Armory |
| Corson, Alan W., Homestead |
| Cotton and Maple Streets School |
| Coudersport and Port Allegany Railroad Station |
| Coventry Hall |
| Cox, Hewson, House |
| Craft, Gershom, House |
| Cramond |
| Craven Hall |
| Crawford Grill No. 2 |
| Crawford, John Minor, House |
| Crawford, William, House |
| Cree, William, House |
| Creighton, Thomas, School |
| Cressbrook Farm |
| Crosley-Garrett Mill Workers' Housing, Store and Mill Site |
| Crossan, Kennedy, School |
| Crown Can Company Building |
| Crozer, George K., Mansion |
| Crozer, John P., II, Mansion |
| Culbertson-Harbison Farm |
| Cumberland Valley Railroad Station and Station Master's House |
| Curtis and Jones Company Shoe Factory |
| Dager-Wonsettler Farmstead |
| Dale, Felix, Stone House |
| Dale, Samuel F., House |
| Darby Meeting |
| Darrah, Lydia, School |
| Dauphin County Courthouse |
| Davies, Edward, House |
| Davies House |
| Davis, Daniel, House and Barn |
| Dawesfield |
| Decker's Chapel |
| Defibaugh Tavern |
| DeHaven, Harry, House |
| Deisher, H. K., Knitting Mill |
| Delaware County National Bank |
| Delaware, Lackawanna and Western Railroad Station |
| Delaware, Lackawanna and Western Railroad Water Gap Staion |
| Delaware Station of the Philadelphia Electric Company, The |
| Delbar Products, Inc. |
| Delmar Apartments |
| Denison House |
| Dent Hardware Company Factory Complex |
| Derbydown Homestead |
| Derrow, Margaret, House |
| Derry Session House and Enclosure |
| Deshler-Morris House |
| D & H Canal Co. Office |
| Diamond Silk Mill |
| Dick Building |
| Dickson Tavern |
| Dickson Works |
| Diehl, George, Homestead |
| Dillingersville Union School and Church |
| Dill's Tavern |
| Dilworth Elementary School |
| Dime Bank Building |
| Dimeling Hotel |
| Dime Savings and Trust Company |
| Dingman's Ferry Dutch Reformed Church |
| Disston, Hamilton, School |
| Disston, Mary, School |
| Doak-Little House |
| Dobbin House |
| Dobbins, Murrell, Vocational School |
| Dobson, James, School |
| Dohner, Michael, Farmhouse |
| Dollar Savings Bank |
| Donaldson, Widow, Place |
| Donaldson, William, House |
| Donegal Mills Plantation |
| Dorflinger, Eugene, Estate |
| Dorneyville Crossroad Settlement |
| Dorrance Mansion |
Data from United States Park Service and Wikidata
