- Marshall, Henry I. (composer)1
- McCarron, Chas. R. (Charles R.), 1891-1919 (composer/lyricist)1
- McWatters, Arthur J. (composer/lyricist)1
- Meinken, Fred, 1882-1958 (composer)1
- Methven, Florence (composer)1
- Meyer, George W., 1884-1959 (composer)1
- Miller, Ned, 1899-1990 (composer/lyricist)1
- Mohr, Halsey K. (composer/lyricist)1
- Monckton, Lionel, 1861-1924 (composer)1
- Moreland, Charles (composer/lyricist)1
- Morgan, Jimmie (composer)1
- Moser, Chas. (composer)1
- Moya (composer)1
- Mueller, Gus, 1890-1965 (composer)1
- Muir, Lewis F., 1884-1950 (composer)1
- Murphy, C. W. (Clarence Wainwright), 1875-1913 (composer/lyricist)1
- Novello, Ivor, 1893-1951 (composer)1
- Novello, Ivor, 1893-1951 (composer/lyricist)1
- O'hara, Fiske, 1878-1945 (composer/lyricist)1
- Oliver, James B. (composer)1