Florida - Role: Building
| Neilson House |
| Newell Hall |
| New River Inn |
| Nicholson, Dr. Malcolm, Farmhouse |
| Nielsen, Lucienne, House |
| Nils M. and Beverly Schweizer House |
| Nokomis Beach Pavilion |
| Northside High School |
| North Ward School |
| Norton Fish Cabin at Captiva Rocks |
| Norton, Gould Hyde, House |
| Norton, Robert Lee, House |
| Nyberg-Swanson House |
| Oakland Park Elementary School |
| Oates Building |
| Ocala Union Station |
| Ocean Spray Hotel |
| Ocoee Christian Church |
| Okahumpka Rosenwald School |
| Old A.C.L. Union Depot |
| Old Baker County Courthouse |
| Old Belleair Town Hall |
| Old Belle Glade Town Hall |
| Old Bradford County Courthouse |
| Old Calhoun County Courthouse |
| Old Christ Church |
| Old City Waterworks |
| Old Collier County Courthouse |
| Old Fernald-Laughton Memorial Hospital |
| Old Gainesville Depot |
| Old Hamilton County Jail |
| Old Holy Redeemer Catholic Church |
| Old Howard Academy |
| Old Jacksonville Free Public Library |
| Old Live Oak City Hall |
| Old Mount Carmel Baptist Church |
| Old Orlando Railroad Depot |
| Old Palm Beach Junior College Building |
| Old Palmetto Hotel |
| Old People's Home |
| Old Philadelphia Presbyterian Church |
| Old Post Office and Customshouse |
| Old School House |
| Olds Hall |
| Old Spanish Monastery |
| Old St. Johns County Jail |
| Old St. Luke's Hospital |
| Old Tampa Children's Home |
| Old US Post Office and Courthouse |
| Old Wakulla County Courthouse |
| Olga School |
| Ollinger-Cobb House |
| Olympia School |
| Olympia Theater and Office Building |
| Opa-locka Bank |
| Opa-Locka Company Administration Building |
| Opa-Locka Railroad Station |
| Operations and Checkout Building |
| Orange City Colored School |
| Orange City Town Hall |
| Orange Park Elementary School |
| Orange Park Negro Elementary School |
| Orange Springs Methodist Episcopal Church and Cemetery |
| O'Reilly House |
| Orlando Utilities Commission Administration Building |
| Ormond Fire House |
| Ormond Hotel |
| Ormond Yacht Club |
| Osborne School |
| Osceola Apartment Hotel |
| Osceola County Courthouse |
| Osprey School |
| Out of Door School |
| Pacetti Hotel |
| Pahokee High School |
| Palace of Florence Apartments |
| Palm Beach Daily News Building |
| Palm Beach Hotel |
| Palm Beach Mercantile Company |
| Palm Beach Town Hall |
| Palm Beach Winter Club |
| Palm Cottage |
| Palm Cottage |
| Palm Cottage Gardens |
| Palmer, Cal, Memorial Building |
| Palmer House |
| Palmerin Hotel |
| Palmer, John Denham, House |
| Palmer-Perkins House |
| Palmetto Armory |
| Panama City Publishing Company Building |
| Panama Grammar School |
| Pan American Seaplane Base and Terminal Building |
| Paramount Theatre Building |
| Pasco County Courthouse |
| Payne, A.A.-Christo, John Sr., House |
| Payne, Christy, Mansion |
| Peabody Hall |
| Pender's Store |
| Pendleton, William Kimbrough, House |
Data from United States Park Service and Wikidata
