| Labate, Bruno@ (2) |
| Labunski, Felix@ (4) |
| Laderman, Ezra@ (4) |
| Lang, David@ (3) |
| Lauridsen, Morten@ (8) |
| La Barbara, Joan@ (4) |
| La Montaine, John@ (5) |
| Lecuona, Ernesto@ (11) |
| Lee, Dai-Keong@ (2) |
| Lees, Benjamin@ (6) |
| Leon, Tania@ (2) | |
| Lerdahl, Fred@ (7) |
| Levy, Marvin David@ (3) |
| Lieberson, Peter@ (8) |
| Lockwood, Annea@ (4) |
| Lockwood, Normand@ (2) |
| Loeffler, Charles@ (5) |
| Loesser, Frank@ (9) |
| Loewe, Frederick@ (9) |
| Lourié, Arthur@ (2) |
| Lucier, Alvin@ (16) |
| Luening, Otto@ (9) | |