New York - Role: Building
| Methodist Episcopal Church of East DeKalb |
| Methodist Episcopal Church of Jacksonville |
| Methodist Episcopal Church of Lansingburgh |
| Methodist-Episcopal Church of Norwich |
| Methodist Episcopal Church of West Martinsburg |
| Methodist Episcopal Church of Windham Centre |
| Methodist-Protestant Church at Fisher's Landing |
| Metropolitan Life Insurance Company |
| Metropolitan Life Insurance Company Hall of Records |
| Metropolitan Museum of Art |
| Metropolitan Savings Bank |
| Mexico Academy and Central School |
| Mexico Octagon Barn |
| Mexico Railroad Depot |
| Mexico Stone Store, The |
| Mica Insulator Company |
| Michaels-Stern Building |
| Michelsen, George J. Furniture Factory |
| Middaugh-Stone House and Dutch Barn |
| Middlebury Academy |
| Middle Farmhouse |
| Middlefield District No. 1 School |
| Middle Island Presbyterian Church |
| Middlesex Center Methodist Church |
| Middletown Plaza |
| Miers, Jacob T., House |
| Milbank, Brinckerhoff, and Fiske Halls |
| Millar-Wheeler House |
| Miller Block and Townhouse |
| Miller Corsets, Inc. Factory |
| Miller, C.W., Livery Stable |
| Miller, Hall & Hartwell Shirt Collar Factory |
| Miller, Harmon, House |
| Miller Homestead |
| Miller House |
| Miller, Johannes, House |
| Miller, Lewis, Cottage, Chautauqua Institution |
| Miller-Mackey House |
| Miller, Paschal, House |
| Miller, Romanta T., House |
| Miller's House at Red Mills |
| Miller, Stephen, House |
| Mill House |
| Milliken-Smith Farm |
| Mills, Gen. William A., House |
| Mills, Harriet May, House |
| Mills House |
| Millspaugh, Glibert, House |
| Milton Railroad Station |
| Miner, Alice T., Colonial Collection |
| Minton's Playhouse |
| Miss Amelia's Cottage |
| Mixter Blacksmith Shop |
| Modern Times School |
| Moffat Library |
| Mohawk Valley Grange Hall |
| Mollenhauer, John, House |
| Monarch Knitting Company Factory |
| Monroe Motor Car Company Building and the Main Garage Company Building |
| Montauk Manor |
| Montauk Tennis Auditorium |
| Montgomery Water Works Building |
| Montgomery Worsted Mills |
| Montour Falls Union Grammar School |
| Montrest |
| Mooney, Edward, House |
| Moore, Benjamin C., Mill |
| Moore, Benjamin, Estate |
| Moore House |
| Moore House |
| Moore-Howland Estate |
| Moore, J. W., House |
| Moore-McMillen House |
| Moore's Building |
| Moore, Silas B., Gristmill |
| Moore, William H., House |
| Moran, Thomas, House |
| Morehouse, Jeremiah, House |
| Morgan Cobblestone Farmhouse |
| Morgan Cottage |
| Morgan Hook and Ladder Company |
| Morgan-Manning House |
| Moriah Town Office Building |
| Morrill Hall, Cornell University |
| Morris-Jumel Mansion |
| Morris, Lewis G., House |
| Morrison, Roderick M., House |
| Morris Park Senior Citizens Home |
| Morristown Schoolhouse |
| Morrisville Engine House |
| Morrisville Public Library |
| Morschauser, Charles, House |
| Morse Cobblestone Farmhouse |
| Morse Farm |
| Morss Homestead/Federal City Homestead |
| Morton Memorial Library |
| Morton Memorial Library |
| Moser Farm |
| Moses, Ogilvie, Farmhouse |
| Moses, Zebulon, Farm Complex |
Data from United States Park Service and Wikidata
