| Leonescu, Adriana | Adriana Leonescu | Costume Designer, Designer | 1969 | 2 | |
| Lazăr, Ovidiu | Ovidiu Lazăr | Director | 1991 - 2001 | 3 | |
| László, Gerő | Gerő László | Actor | 1974 | 1 | |
| Langer, Csaba | Csaba Langer | Actor | 1996 | 1 | |
| Lupu, János | János Lupu | Actor | 1996 | 1 | |
| Lynne, Rita | Rita Lynne | Actor | 2013 | 1 | |
| Ljungqvist, Anton | Anton Ljungqvist | Actor | 2013 | 1 | |
| Lohinszky, Loránd | Loránd Lohinszky | Actor | 1980 | 1 | |
| Lambert, Jane | Jane Lambert | Costume Designer | 2013 | 1 | |
| Lindert-Knöppel, Keara | Keara Lindert-Knöppel | Actor | 2014 | 5 | |
| Lerch, Markus | Markus Lerch | Actor | 2017 - 2018 | 2 | |
| Löhmann, Alexis | Alexis Löhmann | Actor | 1908 | 1 | |
| Leskovec, Catherine | Catherine Leskovec | Actor | 2013 | 1 | |
| Lepa, Sorin | Sorin Lepa | Actor | 1966 | 1 | |
| Lemnaru, Ion | Ion Lemnaru | Actor | 1968 | 1 | |
| László, Gerő | Gerő László | Actor | 1974 | 1 | |
| Landau, Ruth | Ruth Landau | Actor | 2013 | 1 | |
| LoCascio, Shannon | Shannon LoCascio | Actor | 2013 | 1 | |
| Lockett, Donovan | Donovan Lockett | Actor | 2013 | 1 | |
| Lindenfelzer, Richard | Richard Lindenfelzer | Actor | 2013 | 1 | |
| Levitt, Laine | Laine Levitt | Actor | 2013 | 1 | |
| Lambora, Marek | Marek Lambora | Actor | 2016 | 1 | |
| Lo, Fei-tsuei | Fei-tsuei Lo | Composer | 2013 | 1 | |
| Leahy, Ronan | Ronan Leahy | Actor | 2013 | 1 | |
| Lynch, Roseanne | Roseanne Lynch | Actor | 2013 | 1 | |
| Lombardi, Vincent | Vincent Lombardi | Actor | 1959 | 2 | |
| Leasure, Cal | Cal Leasure | Actor | 1959 | 2 | |
| Laue, Fritz | Fritz Laue | Actor | 1959 | 1 | |
| Lenz, Gerhard | Gerhard Lenz | Actor | 1959 | 1 | |
| Lorimer, Enid | Enid Lorimer | Actor | 1959 | 2 | |
| Lang, Harold | Harold Lang | Actor | 1959 | 1 | |
| Lilley, Edwin | Edwin Lilley | Actor | 1959 | 1 | |
| Lockerbie, Beth | Beth Lockerbie | Actor | 1959 | 1 | |
| Landerholm, Ragnar | Ragnar Landerholm | Actor | 1959 | 6 | |
| Longford, Lord | Lord Longford | Costume Designer | 1959 | 1 | |
| Lawler, Iris | Iris Lawler | Actor | 1959 - 1961 | 2 | |
| Long, Mae | Mae Long | Actor | 1959 | 1 | |
| Lein, Torbjørn | Torbjørn Lein | Actor | 1955 - 1958 | 45 | |
| Lapalus, Jean-François | Jean-François Lapalus | Actor | 2013 - 2019 | 9 | |
| Lawrence, Samuel | Samuel Lawrence | Actor | 2013 | 7 | |
| Lopez, Daniel | Daniel Lopez | Actor | 1958 | 1 | |
| Lannerstedt, Ninja | Ninja Lannerstedt | Actor | 1958 | 1 | |
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