- MacDowell, Edward Alexander
- Machado, Antonio
- Mackay, John Henry
- Macleod, Fiona
- MacMillan, Mary
- Maconchy, Elizabeth
- Maeterlinck, Maurice
- Maffei, Andrea
- Maggioni, Manfredo
- Magre, Maurice
- Mahler, Alma
- Mahler, Gustav
- Mahn, H.
- Maigrot, Henry
- Mailáth, János
- Maistre, Xavier de
- Malherbe, François de
- Malibran, Maria Felicità
- Mallarmé, Stéphane
- Mallet (Malloch), David
- Malotte, Albert Hay
- Mancini, Eugenio
- Manning, Richard Walter
- Manzi, Luigi
- Manzoni, Alessandro
- Maquarie, Arthur
- Maquet, Thérèse
- Maraver, Luis
- Marc, Gabriel
- Marcello, Benedetto Giacomo
- Marenco, Leopoldo
- Marès, Roland de
- Mariéton, Paul
- Marin, Auguste
- Marín, Juan Manuel
- Marmontel, Jean-François
- Marot, Clément
- Marqués, Pedro Miguel
- Marsan, Maurice de
- Marschner, Heinrich August
- Marshall, Charles
- Marsili, Carlo
- Marteau, Henri
- Martens, Frederick Herman
- Martin, Easthope
- Martin, Frank
- Martínez Sierra, Gregorio
- Martínez Villergas, Juan
- Martini, Ferdinando
- Martini, Jean-Paul-Égide
- Marx, Joseph
- Marx, Karl
- Masarnau, Santiago de
- Mascagni, Pietro
- Mase, Margery Georgina
- Masefield, John
- Massé, Victor
- Massenet, Jules
- Mattei, Tito
- Matthisson, Friedrich von
- Mauclair, Camille
- Mayrhofer, Johann
- Mazzaferrata, Giovanni Battista
- Mazzolà, Caterino
- Mazzola, Riccardo
- McDowell, Edward
- Mechem, Kirke
- Medtner, Nikolai Karlovich
- Meilhac, Henri
- Meissner, Alfred
- Melani, Alessandro
- Mena, Gabriel
- Menasce, Jacques de
- Menasci, Guido
- Mendelssohn Hensel, Fanny
- Mendelssohn, Felix
- Mendès, Catulle
- Mercadante, Saverio
- Mercé-Fondevila, Antonio
- Mereau, Sophie
- Méry, Joseph
- Mesa, Juan Bautista de
- Messager, André
- Mestres, Apelles
- Metastasio, Pietro
- Métivet, Lucien
- Meyer-Helmund, Erik
- Meyer, Conrad Ferdinand
- Meyerbeer, Giacomo
- Michelangelo
- Mikhael, Ephraim
- Milán, Luis de
- Milanuzzi, Carlo
- Milhaud, Darius
- Millay, Edna St. Vincent
- Miller, Johannes Martin
- Millevoye, Charles Hubert
- Milliet, Paul
- Millöcker, Carl
- Milton, John
