- Laxton, Alwyne Andrew (1892-1982)
- Laycock, Ezra George (1876-)
- Laycock, Ernest William (1862-)
- Laycock, Geoffrey Newton Stephen (1927-)
- Layton, Stephen
- Lazare-Lévy (1882-1964)
- Lázaro Villena, José (1941-)
- Lazarof, Henri (1932-)
- Lazarus, Bruce (1956-)
- Lazenby, Ernest Albert (1873-)
- Lea, Richard
- Leach, Rowland (1885-1963)
- Leadbetter, Martin J. (1945-)
- Leah, John Edward (1870-)
- Leahy, Catherine
- Leake, Prof. George (1859-1928)
- Leary, Arthur Haydn (1888-)
- Leatham, Winifred Marjorie (1899-)
- Leathes, Carteret Eustace de Mussenden (1867-)
- Leaver, Emma Bowman
- Leaver, William Russel (1877-)
- Leavitt, John (1956-)
- Le-Baron Whyte, Norman John
- Lebeau, Alfred (1835-1906)
- Lebeau, Henri
- Lebègue, Nicolas Antoine (1630-)
- Lebic, Lojze (1934-)
- Lechat, Jacques (1921-)
- Lechner, Konrad (1911-1989)
- Lechthaler, Dr Josef (1891-1948)
- Leckie, Alexander
- Leclair, Jean Marie (1697-1764)
- Leclerc, L.
- Leclerc, Michelle (1939-)
- Lecocq, Alexandre Charles (1832-1918)
- Lecocq, Leon
- Lecourt, Paul (1870-1947)
- Ledenyov, Roman Semionovich (1930-)
- Lederer, Joseph (1733-1796)
- Ledesma, Nicolás Rodríguez (1791-1883)
- Ledger, Sir Philip Stevens (1937-)
- Leduc, Alphonse (1804-1868)
- Leduc, Jacques (1932-)
- Lee, Benjamin Sandberg (1869-)
- Lee, Denis Albert Bailey (1904-)
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- Lee, Dr Ernest Markham (1874-1956)
- Lee, Hope Anne Ken-Wai (1953-)
- Lee, John (1908-1990)
- Lee, John Charles (1872-1940)
- Lee, John Harry (1881-)
- Lee, Mabel (1898-)
- Lee, Mark
- Lee, Noel (1924-)
- Lee, William (-1754)
- Lee, William (1862-)
- Lee, William (1872-)
- Leech, Percival (1882-)
- Leeds, Frederick (1866-)
- Leeds, Dr Geoffrey Norman (1891-1965)
- Leedy, Douglas H. (1938-)
- Leek, Stephen (1959-)
- Lees, Alan (1928-)
- Lees, John
- Lees, Joseph
- Leese, Joseph (1866-1930)
- Leeson, Charles L. (1893-)
- Leeuw, Ton de (1926-1996)
- Leeve, Henry
- Lefebure, Joseph (1877-)
- Lefébure-Wély, Antoine (-1831)
- Lefébure-Wély, Louis James Alfred (1817-1869)
- Lefèbvre, Canning
- Lefèbvre, Charles Edouard (1843-1917)
- Lefèbvre, Claude (1931-)
- Lefèbvre, Françoise (1912-)
- Lefevre, Charles
- Lefèvre-Derodé, E.
- Lefkoff, Gerald (1930-)
- Legègue, Nicolas Antoine de (1631-1702)
- Leggat, Donald
- Legh, Charles (1912-)
- Legido, Jesús (1943-)
- Legley, Victor (1915-1994)
- Legoupil, Jean (1945-)
- Legrand, Robert (1908-1974)
- Legrand, Yves
- Legrenzi, Giovanni (1625-)
- Leguay, Jean Pierre (1939-)
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Organist 
Organist & composer 
Composer 
Organ builder 
Other
