All - Architectural style - Greek Revival architecture
| Capon Springs |
| Captain Nathan Hale Monument |
| Captain R. B. Forbes House |
| Cardwellton |
| Cargill House |
| Carlin-Rathgeber House |
| Carlinville Historic District |
| Carlowville Historic District |
| Carman, Cornelius, House |
| Carmel Presbyterian Church |
| Carmer, William, House |
| Carnes, James, House |
| Carnton |
| Carolina Hall |
| Carolina Methodist Church |
| Carpenter, Capt. Nathan, House |
| Carpenter, David, House |
| Carpenter, Willard, House |
| Carriger, Nicholas, Estate |
| Carr, John, House |
| Carson-Andrews Mill and Ben F.W. Andrews House |
| Carson-Young House |
| Carter Farm |
| Carter House |
| Carter Plantation |
| Cartwright, Matthew, House |
| Cartwright, Matthew, House |
| Carver Residential Historic District |
| Cary, Freeman Grant, Pleasant Hill Academy |
| Cary, Joshua B., House |
| Cary, Otis, House |
| Caryswood |
| Cascade Locks Historic District |
| Case, Larnerd, House |
| Cash-Draper House |
| Cashier's House |
| Cassel, Carl and Ulrika Dalander, House |
| Cassell, Henry, House |
| Cassidy Farmhouse |
| Cassimus House |
| Castle, Dr. Andrew, House |
| Caswell House |
| Cataract Engine Company No. 3 |
| Cataumet Schoolhouse |
| Cates, Charles F. and Howard, Farm |
| Cates, John F., House |
| Catlin Hall, Wilkes College |
| Caton, Jesse H., House |
| Catron, Minatree, House |
| Cave Hill Farm |
| Cavendish Universalist Church |
| Cayuga County Courthouse and Clerk's Office |
| C. Burton Hotel |
| Cecilia Memorial Christian Church |
| Cedarburg Mill |
| Cedar Crest |
| Cedar Grove |
| Cedar Grove |
| Cedar Grove |
| Cedar Grove Cemetery |
| Cedar Grove Place |
| Cedar Grove Plantation |
| Cedar Haven |
| Cedar Lane |
| Cedarmont |
| Cedarock Park Historic District |
| Cedars, The |
| Cedars, The |
| Cedars, The |
| Cedars, The |
| Centenary College |
| Centerbrook Congregational Church |
| Center School |
| Centerview |
| Centerville Town Hall |
| Central Geneva Historic District |
| Central Vinton Residential Historic District |
| Centre County Courthouse |
| Centre Hill |
| Centre Hill Historic District |
| Centre Market Square Historic District |
| Centre Presbyterian Church |
| Century House |
| Chagrin Falls Township Hall |
| Chamberlain, Daniel, House |
| Chamberlain-Kay House |
| Chambersea |
| Chambers-Morgan Farm |
| Chambers, Robert, House |
| Champion-McGarrah Plantation |
| Chancellor House |
| Chandler, Matthew, House |
| Chandler, Peter, House |
| Chandler Store |
| Chapel Hill |
| Chapel Hill Cumberland Presbyterian Church |
| Chapel of Our Lady Help of Christians |
| Chapin, A., House |
| Chapman, A. H., House |
| Chapman Farmhouse |
Data from United States Park Service and Wikidata
