Louisiana - Significance region: Local
| Macheca Building |
| Madison Parish Courthouse |
| Madisonville Bank |
| Madisonville Boarding House |
| Madisonville Town Hall |
| Magee, Nehemiah, House |
| Magee, Robert D., House |
| Magnolia |
| Magnolia Lane Plantation House |
| Magnolia Mound Plantation Dependency |
| Magnolia Plantation |
| Magnolia Street Housing Project |
| Mahaffey, T. C., House |
| Main Street Historic District |
| Main Street Historic District |
| Major, Albin, House |
| Mansfield Historic District |
| Manship House |
| Marengo Plantation House |
| Marksville Commercial Historic District |
| Martin, Ed, Seafood Company Factory and House |
| Martin House |
| Martin, Sidney, House |
| Mason House |
| Masonic Building |
| Masonic Home for Children |
| Masonic Temple |
| Masur House |
| Mather House |
| May, David L. and Jeanette Ross, House |
| Maylie's Restaurant |
| McCaleb House |
| McClendon House |
| McCulla House |
| McDonald House |
| McDonogh School No. 6 |
| McDonoghville Historic District |
| McGehee Hall, Southeastern Louisiana State University |
| McGehee House |
| McGill, Dr. Robert E. |
| McKinley High School |
| McNeely Hotel |
| McNeely House |
| McNeese State University Auditorium |
| McNutt Rural Historic District |
| McNutt School |
| Meadows House |
| Meeker Sugar Refinery |
| Melady House |
| Merchants and Planters Bank |
| Mer Rouge High School |
| Methodist Home Hospital |
| Meyer, Adolph, School |
| Midland Branch Railroad Depot |
| Miles-Hanna House |
| Miller Farmstead |
| Miller House |
| Miller, J. M., and Brother Store |
| Miller Memorial Library |
| Miller-Roy Building |
| Millet House |
| Mills, Kennedy, and Hopkins Additions |
| Milner Motors |
| Minden Historic District |
| Mintmere |
| Mix Store and Post Office |
| Monk House |
| Monroe Residential Historic District |
| Montegut Plantation House |
| Montegut School |
| Montet House |
| Monte Vista Plantation House |
| Montrose Plantation House |
| Moore, Bouey, Homestead |
| Moore House |
| Moore, R. T., House |
| Mooringsport Masonic Lodge |
| Mooringsport School |
| Moreauville High School |
| Morehouse Parish Courthouse |
| Morel-Nott House |
| More Mileage Gas Station |
| Morgan City City Hall and Courthouse |
| Morgan City Historic District |
| Moro Plantation House |
| Moss Grove Plantation House |
| Mount Hope Plantation House |
| Mount's Villa |
| Mouton, Charles H., House |
| Mouton House |
| Mt. Olivet Episcopal Church and Cemetery |
| Mt. Sinai Rosenwald School |
| Muller's Department Store |
| Mundy-McFarland House |
| Murray Henderson Elementary School |
| Myrtle Grove Plantation |
| Myrtle Hill Plantation House |
| Myrtlewood |
| Napoleon Street Branch Library |
| Narcisse Prudhomme Plantation |
Data from United States Park Service and Wikidata
