- Langford, Don (Doctor)3
- Lansky, Bernard1
- Law, John Phillip, 1937-20081
- Lawrence, Michael1
- Lazier, Gilbert Neil, 1939-1
- Leary, Timothy, 1920-19961
- Lebowitz, Fran1
- Lee, Arthur, 1945-20061
- Lee, Peter, 1939-20082
- Leffler, Ed, 1935-19931
- Legg, Cliff1
- Leiber, Gary1
- Leiber, Jerry2
- Leigh, Barbara3
- Leigh, Spencer, 1945-14
- Lennon, Charles8
- Lennon, Cynthia2
- Lennon, John, 1940-198033
- Lennon, Julian, 1963-1
- Lennon, Pauline, 1948-1
- Lennon, Sean, 1975-1
- Lennon, Sidney1
- Lerner, Murray1
- Leshin, Phil, 1928-3
- Levine, Phil1
- Levitch, Harry1
- Levy, Morris, 1927-19902
- Lewis, Joe, 1944-1
- Lewis, Vic, 1919-20092
- Lewisohn, Mark1
- Licotti, Odillo1
- Lieberfarb, Warren N.1
- Lieberman, Fredric1
- Linz, Helen1
- Little Richard, 1932-20201
- Little Walter, 1930-19681
- Locasio, Philip1
- Locke, Dixie1
- Logan, Horace1
- Logsdail, Nicholas1
- Lommel, Ulli1
- Lord Buckley, 1906-19602
- Love (Musical group)1
- Lower East Side (Musical group)2
- Loyala, Sister1
- Lynden, John1
- Lyon, Mary Jane1
- Mac Low, Jackson1
- MacDougall, Douglas1
- MacMillan, Iain, 1938-20063
- Macdonald, Don, 1966-1
- Maini, Joe1
- Makin, Rex, 1925-20171
- Mankowitz, Gered1
- Mann, Billy1
- Mann, Harvey1
- Mann, Richard (Richard C.)1
- Mansfield, Elizabeth3
- Mansfield, Rex6
- Manzarek, Dorothy1