| Lichtenstein, Christopher | Christopher Lichtenstein | Musical Director | 2017 | 1 | |
| Laugs, Robert | Robert Laugs | Musical Director | 1914 | 1 | |
| Lukin, Zsuzsanna | Zsuzsanna Lukin | Musical Director | 2019 - 2020 | 2 | |
| Laptenko, Ju. | Ju. Laptenko | Musical Director | 1990 | 1 | |
| Lewin, Giles | Giles Lewin | Musical Director | 2020 | 1 | |
| Lacroix, Pierre | Pierre Lacroix | Musical Director | 2015 | 1 | |
| Legovich, Sebastian | Sebastian Legovich | Musical Director | 2024 | 1 | |
| Loddgard, Magnus | Magnus Loddgard | Musical Director, Musician | 2022 | 2 | |
| Largent, Doug | Doug Largent | Musician | 2011 | 1 | |
| Løberg, Daniel T. | Daniel T. Løberg | Musician | 2007 | 1 | |
| Larsen, Rune | Rune Larsen | Musician | 2009 | 1 | |
| Larssen, Ole-Morten Isaksen | Ole-Morten Isaksen Larssen | Musician | 2009 | 1 | |
| Lindhjem, Sven Håkon | Sven Håkon Lindhjem | Musician | 2013 | 2 | |
| Leggett, Ernest | Ernest Leggett | Musician | 1925 | 1 | |
| Ladrette, Antoine | Antoine Ladrette | Musician | 1981 | 2 | |
| Leopold, Manfred | Manfred Leopold | Musician | 1985 | 1 | |
| Lorenzen, Sylvie | Sylvie Lorenzen | Musician | 1990 | 1 | |
| Lindström, Pelle | Pelle Lindström | Musician | 1991 | 1 | |
| Ludwig, Dagmar | Dagmar Ludwig | Musician | 1993 | 1 | |
| Lavranou, Maria | Maria Lavranou | Musician | 2002 | 1 | |
| Leuenberger, Guy-François | Guy-François Leuenberger | Musician | 2004 | 2 | |
| Laretei, Käbi | Käbi Laretei | Musician | 2001 - 2003 | 2 | |
| Lal, Mundri | Mundri Lal | Musician | 2008 | 1 | |
| Liliana Calora | Liliana Calora | Musician | 1998 | 1 | |
| Laethem, Els Van | Els Van Laethem | Musician | 2009 | 16 | |
| Lee Walters, Becky | Becky Lee Walters | Musician | 2015 - 2016 | 3 | |
| Lammel, Lisa | Lisa Lammel | Musician | 2013 | 1 | |
| Laxmi, Vijaya | Vijaya Laxmi | Musician | 2016 - 2017 | 2 | |
| Liebrecht, Marc | Marc Liebrecht | Musician | 1956 - 1957 | 3 | 1 |
| Liszt, Fr. | Fr. Liszt | Musician | 1942 | 1 | |
| Lundeng, Susanne | Susanne Lundeng | Musician | 2001 - 2013 | 2 | 1 |
| Lund, Håvard | Håvard Lund | Musician | 1992 | 1 | |
| Lysiak, Henryk | Henryk Lysiak | Musician | 1976 | 1 | |
| Langford, Mary, H. | Mary H. Langford | Musician | 1978 | 1 | |
| Larsson, Lotta | Lotta Larsson | Musician | 1995 - 2004 | 5 | |
| Lindh, Annika | Annika Lindh | Musician | 1997 | 1 | |
| Linné, Mikael | Mikael Linné | Musician | 2008 | 1 | |
| López de la Osa, Pablo | Pablo López de la Osa | Musician | 2015 | 1 | |
| Landin, Per Ola | Per Ola Landin | Musician | 2020 | 36 | |
| Lahooti, Siavash | Siavash Lahooti | Musician | 2016 | 1 | |
| Lefèbvre, Esther | Esther Lefèbvre | Musician | 2018 | 3 | |
| Lockwood, Didier | Didier Lockwood | Musician | 1990 | 1 | |
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