Florida - Criteria: C (architecture/engineering)
| L & N Marine Terminal Building |
| Long House |
| Longwood Historic District |
| Longwood Hotel |
| Longwood House |
| Lopez, Xavier, House |
| Los Robles Gate |
| Louisville and Nashville Depot |
| Louisville and Nashville Passenger Station and Express Building |
| Love, E. C., House |
| Lummus Park Historic District |
| Lutz Elementary School, Old |
| Lynch Building |
| Lyndhurst Plantation |
| Lyric Theater |
| Lyric Theatre |
| MacFarlane Homestead Historic District |
| Magnolia Heights Historic District |
| Maitland Art Center |
| Mandarin Store and Post Office |
| Mango Promenade Historic District |
| Mann Manor |
| Marabanong |
| Mar-A-Lago National Historic Landmark |
| Marianna Historic District |
| Marina Historic District |
| Marion Hotel |
| Markland |
| Martello Gallery-Key West Art and Historical Museum |
| Martina Apartments |
| Martin County Court House, Old |
| Martin, Gov. John W., House |
| Marzoni House |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple No. 25 |
| Matheson House |
| May, Asa, House |
| May-Stringer House |
| McFarlin, John Lee, House |
| McIntosh Historic District |
| McKeage, John & Florence, House |
| McKee Jungle Gardens |
| McKenzie, Mary Phifer, House |
| McKinley Climatic Laboratory |
| McMinn-Horne House |
| Melbourne Beach Pier |
| Melrose Historic District |
| Memorial Home Community Historic District |
| Memorial Park |
| Merchants Bank Building |
| Merrick-Simmons House |
| Methodist Episcopal Church at Black Creek |
| Methodist Episcopal Church, South, at Umatilla |
| Meyer-Davis House-Hasty Cottage |
| Meyer-Kiser Building |
| Miakka School House |
| Miami Beach Architectural District |
| Miami-Biltmore Hotel |
| Miami Marine Stadium |
| Miami Senior High School |
| Miami Women's Club |
| Micanopy Historic District |
| Miccosukee Methodist Church |
| Michigan Avenue Bridge |
| Middleburg Historic District |
| Milam, Arthur, House |
| Millard-McCarty House |
| Miller, George McA., House |
| Milton Historic District |
| Milton-Myers American Legion Post No. 65 |
| Missile Crawler Transporter Facilities |
| Model Land Company Historic District |
| Monticello High School |
| Monticello Historic District |
| Monticello Hotel |
| Moore Haven Downtown Historic District |
| Moore Haven Residential Historic District |
| Moores Creek Bridge |
| Morgan-Townsend House |
| Morocco Temple |
| Moseley Homestead |
| Moss Hill Church |
| Mote-Morris House |
| Moulton-Wells House |
| Mountain Lake Colony House |
| Mountain Lake Estates Historic District |
| Mount Beasor Primitive Baptist Church |
| Mount Dora Historic District |
| Mount Olive African Methodist Episcopal Church |
| Mount Zion AME Church |
| Mount Zion Baptist Church |
| Mt. Pilgrim African Baptist Church |
| Mud Lake Canal |
| Municipal Auditorium-Recreation Club |
| Munn Park Historic District |
| Munroe, Ralph M., House |
| Murphy-Burroughs House |
| Naples Historic District |
| Nassau County Jail |
Data from United States Park Service and Wikidata
