Florida - Significance region: Local
| Central-Cocoanut Historic District |
| Central Grammar School, Old |
| Central High School |
| Central Park Historic District |
| Central Station |
| Centro Asturiano |
| Chaires Community Historic District |
| Chalet Suzanne |
| Chalker, George A., House |
| Charlotte Harbor and Northern Railway Depot |
| Charlotte High School |
| Chattahoochee Historic District |
| Cherokee Grove |
| Chidsey Library |
| Chief Master at Arms House |
| Chinsegut Hill Manor House |
| Chipley City Hall |
| Christ Church |
| Church of God by Faith |
| Church of the Good Shepherd |
| Church of the Holy Spirit |
| Church of the Immaculate Conception |
| Church Street Historic District |
| Citizens Bank |
| Citra Methodist Episcopal Church-South |
| Citrus County Courthouse, Old |
| City Island |
| City National Bank Building |
| City of Alachua Downtown Historic District |
| City of Miami Cemetery |
| City of St. Augustine Miniature Golf Course |
| City Point Community Church |
| City Waterworks |
| Civitan Beach House |
| Clara White Mission, DU02071 |
| Cla-Reina Hotel |
| Clark-Chalker House |
| Clarke, William, Estate |
| Clay County Courthouse |
| Clematis Street Historic Commercial District |
| Clermont Woman's Club |
| Cleveland Court School |
| Cleveland Street Post Office |
| Clewiston Historic Schools |
| Clewiston Inn |
| Clifford House |
| Clifton Cemetery |
| Clune Building |
| Coca-Cola Bottling Plant |
| Cocoa Post Office |
| Coconut Grove Library |
| Coconut Grove Playhouse |
| Coco Plum Woman's Club |
| Coles, Flavius C., Farmhouse |
| College Park Historic District |
| Collins Waterfront Architectural District |
| Colonial Estate |
| Columbia County High School |
| Comeau, Alfred J., House |
| Comeau Building |
| Community Chapel of Melbourne Beach |
| Comstock-Harris House |
| Congress Building |
| Coral Castle |
| Coral Gables City Hall |
| Coral Gables Congregational Church |
| Coral Gables Elementary School |
| Coral Gables Police and Fire Station |
| Coral Gables Woman's Club |
| Coronado Historic District |
| Corrigan House |
| Cortez Historic District |
| Costa, Dr. Frank J., House |
| Council Oak Tree Site on the Hollywood Seminole Indian Reservation |
| Covington House |
| Cox Family Log House |
| Cox Furniture Store |
| Cox Furniture Warehouse |
| Cox, John F., Grammar School |
| Crane Point |
| Craney Spec Houses Historic District |
| Craven, Dr. James B. and Virginia, House |
| Cravero House |
| Crescent City Historic District |
| Cresthaven |
| Crestview Commercial Historic District |
| Crisp Building |
| Croissant Park Administration Building |
| Crouse House |
| Crystal Ice Company Building |
| Crystal River Old City Hall |
| Cummer Gardens |
| Cummings House |
| Curry Houses Historic District |
| Curtiss, Glenn, House |
| Curtiss, Lua, House I |
| Curtiss, Lua, House II |
| Curtis, William E., House |
| Cypress Lodge |
| Cypress Street Elementary School |
Data from United States Park Service and Wikidata
