All Names
- MacNeil, G. E. (Gordon Earl), d. 1945
- MacNerhany, Francis
- Macpherson, Robert, 1815 or 16-1872
- Madison, Dolley, 1768-1849
- Madsen, Loren, 1943-
- Maeda, Toshiyuki J.
- Magonigle, Harold Van Buren, 1867-1935
- Maria R. Drayer Interiors (5)
- Marie, Alfred (20)
- Markoe, John, 1781-1834
- Marlatt, C. L. (4)
- Marquis & Stoller
- Marriott Hot Shoppes (20)
- Marriott Hot Shoppes. Architectural Planning & Store Engineering
- Marsh and Peter
- Marshall & Gongwer
- Marshall, George P.
- Marshall, James Rush, 1851-1927 (2)
- Marshall, Thomas Worth, 1872-1952
- Martin, D. D. (Darwin D.), 1865-1935 (2)
- Martin, Darwin D.
- Martin, Isabelle R. (Isabelle Reidpath)
- Mason, William B. (2)
- Massachusetts Charitable Mechanic Association
- Matthews, Stanley (2)
- Matthews-Schwartz, Inc. (6)
- Mattingly, Wm. F. (William Francis), 1837-1918 (3)
- Maury, John, b. 1885
- May, Leo (2)
- May, Maurice S. (2)
- McArthur, John, 1823-1890
- McConihe, Eleanore Berger Moran (4)
- McConihe, Malcolm S. (2)
- McDowell & Sons (2)
- McDowell, S. C. (Samuel C.) (4)
- McHugh, P. A.
- McKenney, Frederic D. (Frederic Duncan), b. 1863
- McKim, Charles Follen, 1847-1909
- McKim, Charles Follen, 1847-1909.
- McKim, Mead & White (4)
- McKim, Mead & White.
- McKnew, Donald H. (Donald Harrison) (2)
- McLachlen Banking Corporation (4)
- McLachlen, L. P. (Lanier P.), b. 1889 (2)
- Mead, Neva Arlow Moxley
- Mead, Sterling, b. 1888
- Meigs, Montgomery C. (Montgomery Cunningham), 1816-1892 (4)
- Melander, Adolph E. (Adolph Emil), 1845-1933
- Mellon, Paul, Mrs.
- Meridian House Foundation (2)
- Meridian House International (5)
- Merriam, C. Hart (Clinton Hart), 1855-1942
- Merrill, W. E. (William Emery), 1837-1891
- Mesrobian, M. (Mihran), 1889-1975 (2)
- Methodist Episcopal Church
- Michels, Doug (2)
- Mies van der Rohe, Ludwig, 1886-1969 (13)
- Milburn, Yancey, 1890-1977
- Miles Pneumatic Tube Company
- Millard, George M., Mrs., 1873-1938
- Miller, Hal A. (Hal Arluck)
- Miller, Ruby Boyer
- Mills, Alan B. (Alan Balch)
- Mills, Rhines, Bellman & Nordhoff, Architects
- Mills, Robert, 1781-1855 (4)
- Mims, Speake & Co.
- Minoru Yamasaki and Associates
- Mitchell/Giurgola Architects
- Moline Furniture Works
- Moore, J. Francis (2)
- Moore, M. F. (Maurice F.)
- Morgan, Joseph G. (Joseph Gerard), 1903-
- Morrill, E. P.
- Morris, George M. (George Maurice), b. 1889
- Morse, Edward (Edward E.)
- Moscau, Rudolph B.
- Moses, A. C. (Arthur C.) (2)
- Mount Sinai Hospital (New York, N.Y.)
- Mullett, A. B. (Alfred Bult), 1834-1890 (28)
- Mullins, Barbara Lee, 1938-
