| Lamhut, Mark | Mark Lamhut | Lighting Designer, Sound Designer | 2015 | 2 | |
| Lundh-Noren, Brigitta | Brigitta Lundh-Noren (Brigitta Lundh-Noren) | Mask Maker | 1970 | 1 | |
| Lancastar, Edna | Edna Lancastar (Edna Lancastar) | Mask Maker | 1956 | 1 | |
| Larson, Love | Love Larson (Love Larson) | Mask Maker | 2006 | 1 | |
| Lilja, Anna | Anna Lilja (Anna Lilja) | Mask Maker | 1997 - 2013 | 3 | |
| Lindgren, Eva | Eva Lindgren (Eva Lindgren) | Mask Maker | 1978 - 1980 | 3 | |
| Lisø, Else | Else Lisø (Else Lisø) | Mask Maker | 1985 - 1996 | 7 | |
| Løken, Torunn | Torunn Løken (Torunn Løken) | Mask Maker | 1986 - 2006 | 4 | |
| List, Marie Therese | Marie Therese List (Marie Therese List) | Mask Maker | 1974 - 1978 | 2 | |
| Larsson, Christer | Christer Larsson (Christer Larsson) | Mask Maker | 1990 - 1994 | 3 | |
| Lågrinn, Kari Elisabeth | Kari Elisabeth Lågrinn (Kari Elisabeth Lågrinn) | Mask Maker | 1995 | 1 | |
| Log, Marianne | Marianne Log (Marianne Log) | Mask Maker | 2009 - 2022 | 51 | |
| Lederer, Wilhelm | Wilhelm Lederer | Mask Maker | 1971 - 1973 | 2 | |
| Leitenbauer, Viktor | Viktor Leitenbauer | Mask Maker | 1975 | 1 | |
| Lintott, Kenneth | Kenneth Lintott | Mask Maker | 1972 | 1 | |
| Larsson, Wenche | Wenche Larsson | Mask Maker | 1983 | 29 | |
| Linnemann, Magna | Magna Linnemann | Mask Maker | 1983 | 1 | |
| Llach, Chass | Chass Llach | Mask Maker | 1984 - 1986 | 2 | |
| Laursen, Erik | Erik Laursen | Mask Maker | 1985 - 1987 | 35 | |
| Liebau, Jürgen | Jürgen Liebau | Mask Maker | 1990 | 1 | |
| Leonhardt, Wieland | Wieland Leonhardt | Mask Maker | 1956 | 1 | |
| Lindholm, Lovisa | Lovisa Lindholm | Mask Maker | 1993 | 1 | |
| Litokorpi, Anneli | Anneli Litokorpi | Mask Maker | 1994 | 1 | |
| Lundh, Arne | Arne Lundh | Mask Maker | 1964 - 1968 | 5 | |
| Lundgren, Gunnar | Gunnar Lundgren | Mask Maker | 2001 - 2011 | 2 | |
| Lorenz, Waltraud | Waltraud Lorenz | Mask Maker | 2001 - 2008 | 3 | |
| Lindström, Pia | Pia Lindström | Mask Maker | 2004 | 1 | |
| Lopatová, Vlasta | Vlasta Lopatová | Mask Maker | 1964 - 1990 | 4 | |
| Lyghizou, Ioanna | Ioanna Lyghizou | Mask Maker | 2008 | 1 | |
| Lieferman, Pat | Pat Lieferman | Mask Maker | 1964 | 1 | |
| Lundy, Ann | Ann Lundy | Mask Maker | 1963 | 1 | |
| Lalehzari, Naser | Naser Lalehzari | Mask Maker | 1961 | 1 | |
| Lerew, Lawrence | Lawrence Lerew | Mask Maker | 1961 | 1 | |
| Lund, Arne | Arne Lund | Mask Maker | 1960 | 1 | |
| Low, Frank | Frank Low | Mask Maker | 1932 | 1 | |
| Leoni, Leo | Leo Leoni | Mask Maker | 1971 | 2 | |
| Lindblom, Mihra | Mihra Lindblom | Mask Maker | 2018 | 10 | |
| Lie, Tonje | Tonje Lie | Mask Maker | 2022 | 1 | |
| Lid, Ida Holthe | Ida Holthe Lid (Ida Holthe Lid) | Mask Maker, Puppet Designer | 2012 - 2015 | 3 | |
| Landelius, Anders | Anders Landelius | Mask Maker, Puppet Designer | 1975 | 2 | |
| Luhn, Jürgen | Jürgen Luhn (Jürgen Luhn) | Musical Director | 1974 | 1 | |
| Lundqvist, Randi Krogvold | Randi Krogvold Lundqvist (Randi Krogvold Lundqvist) | Musical Director | 2006 | 1 | |
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