| Lentino, Lea, Campbell | Lea Campbell Lentino | Lighting Designer | 1991 | 1 | |
| Larson, Mark | Mark Larson | Actor | 1991 | 1 | 1 |
| Lehmann, Wilfried | Wilfried Lehmann | Actor | 1991 | 2 | |
| Langhans, Jürgen | Jürgen Langhans | Actor | 1991 | 4 | |
| Latham, Maxton | Maxton Latham | Actor | 1991 | 1 | |
| Litterati-Végh, László | László Litterati-Végh | Dramaturg | 1991 | 1 | |
| Lagreze, Christian | Christian Lagreze | Actor | 1991 | 1 | |
| Larys, Jürgen | Jürgen Larys | Actor | 1991 | 8 | 1 |
| Larsson, Iréne | Iréne Larsson | Actor | 1991 | 3 | |
| Lindström, Pelle | Pelle Lindström | Musician | 1991 | 1 | |
| Lekkas, Dimitris | Dimitris Lekkas | Composer | 1991 | 1 | |
| León, Julio, de | Julio de León | Actor | 1991 | 1 | |
| Landerl, Peter | Peter Landerl | Actor | 1991 | 1 | |
| Livathinos, Stathis | Stathis Livathinos | Actor | 1991 | 1 | |
| Lerca, Constanța | Constanța Lerca | Actor | 1991 | 1 | |
| Landolt, Marcel | Marcel Landolt | Actor | 1991 | 2 | |
| Landis, Heiri | Heiri Landis | Actor | 1991 | 2 | |
| Llorente, Juan Pablo | Juan Pablo Llorente | Actor | 1991 | 1 | |
| Leonard, John A. | John A. Leonard | Sound Designer | 1990 - 2015 | 10 | |
| Linaios, Stefanos | Stefanos Linaios | Actor, Director, Translator | 1990 - 2012 | 6 | |
| Lindström, Marika | Marika Lindström | Actor | 1990 - 2006 | 4 | 1 |
| Lodwig, Ulrike | Ulrike Lodwig | Actor | 1990 - 2005 | 7 | |
| Lenz, Angelika | Angelika Lenz | Costume Designer, Designer | 1990 - 2004 | 7 | |
| Leighton, Richard | Richard Leighton | Actor | 1990 - 2002 | 2 | 1 |
| Larsson, Bertil | Bertil Larsson | Lighting Designer | 1990 - 2000 | 4 | |
| Lepine, Danièlle | Danièlle Lepine | Actor | 1990 - 1995 | 2 | |
| Lund-Roland, Svein | Svein Lund-Roland | Designer | 1990 - 1995 | 4 | |
| Larsson, Christer | Christer Larsson | Mask Maker | 1990 - 1994 | 3 | |
| Lindner-Badstübner, Wally | Wally Lindner-Badstübner | Costume Designer | 1990 - 1992 | 2 | |
| Luiza, Natália | Natália Luiza | Actor | 1990 - 1992 | 2 | |
| Lindsell, Egil | Egil Lindsell | Actor, Musician | 1990 - 1992 | 3 | |
| Lilja-Svensson, Margareta | Margareta Lilja-Svensson | Producer | 1990 - 1991 | 3 | |
| Leveston, Glenis | Glenis Leveston | Actor | 1990 - 1991 | 5 | |
| Lianos, Periklis | Periklis Lianos | Actor | 1990 - 1991 | 2 | |
| Lautenbach, Joachim | Joachim Lautenbach | Actor | 1990 - 1991 | 2 | |
| Lebsanft, Wiggo | Wiggo Lebsanft | Actor | 1990 | 2 | 1 |
| Lössl, Josefin | Josefin Lössl | Actor | 1990 | 1 | |
| Lynn, Abby | Abby Lynn | Actor | 1990 | 1 | |
| Lundstrøm, Sivert | Sivert Lundstrøm | Actor | 1990 | 1 | |
| Lie, Elisabeth | Elisabeth Lie | Actor | 1990 | 1 | |
| Lunn, Jonathan | Jonathan Lunn | Dancer | 1990 | 2 | |
| Ling, Peter | Peter Ling | Designer | 1990 | 2 | |
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