- L’Egru, Christian
- l’Hermite, Tristan
- La Fontaine, Jean de
- La Motte, Antoine Houdar de
- Lachner, Franz Paul
- Lacombe, Louis
- LaForge, Frank
- Lafrique, Armand
- Lahoz y Otal, Florencio
- Lalli, Domenico
- Lalo, Édouard
- Lamartine, Alphonse de
- Lamquet
- Lang, Josephine
- Lange-Müller, Peter Erasmus
- Lange, Gustav
- Lange, Gustav Fredrik
- Lappe, Karl Gottlieb
- Larra, Luis Mariano de
- Laserna, Blas de
- Lassen, Eduard
- Lassus, Rolande de
- Latour, Patrice Contamine de
- Lauzières, Achille de
- Lavigne, Ernest
- Lawes, Henry
- Lawes, William
- Lawson, Peter W.F.
- Lazzari, Sylvio
- le Braz, Anatole
- Leander, Richard
- Lebey, André
- Lecocq, Charles
- Ledwidge, Francis
- Legouvé, Ernest-Wilfrid
- Legouvé, Gabriel-Marie
- Legrenzi, Giovanni
- Leguerney, Jacques
- Lehár, Franz
- Lehmann, Amelia
- Lehmann, Liza
- Lehms (Pallidor), Georg Christian
- Leichtling, Alan
- Leitner, Ernst Ludwig
- Leitner, Karl Gottfried von
- Lekberg, Sven
- Lemaire, Ferdinand
- Lemaître, Jules
- Lemcke, Karl von
- Lemoine, Gustave
- Lenau, Nikolaus
- Leo, Leonardo
- Leon, Gottlieb von
- Léon, Victor
- Leoncavallo, Ruggiero
- Leoni, Franco
- Lerberghe, Charles van
- Leroux, Xavier
- Lessing, Gotthold Ephraim
- Leterrier, Eugène
- Leuven, Adolphe de
- Leveridge, Richard
- Levetzow, Karl von
- Lewandowsky, Max
- Lichey, Reinhold
- Lichnowsky, Felix
- Liddle, Samuel
- Liliencron, Detlev von
- Lindau, Wilhelm Adolf
- Lindner, Anton
- Lingen, Thekla
- Lingg, Hermann
- Linley, Thomas
- Lipatti, Dinu
- Lippold, Max
- Liscovius, Salomon
- Lisle, Bernard de
- Lisle, Leconte de
- Liszt, Franz
- Literes, Antonio
- Litolff, Henry Charles
- Lleó-Balbastre, Vicente
- Locle, Camille du
- Loder, Edward J.
- Loeben, Otto Heinrich von
- Loeffler, Charles Martin Tornov
- Loève-Veimar, François-Adolphe
- Loewe, Johann Carl Gottfried
- Logau, Friedrich von
- López Amagro, Antonio
- López de Mendoza, Íñigo
- López Pinto, Ignacio
- López Silva, José
- Lorenz, Wilhelmine
- Lorenzi, Giovanni Battista
- Lori, Arcangelo
- Lortzing, Gustav Albert
- Lothar, Ernst
- Lotti, Antonio
- Louys, Pierre
