| Loibl, Josef | Josef Loibl | Actor | 1966 | 1 | |
| Larkin, Peter | Peter Larkin | Designer | 1951 - 1965 | 3 | |
| Langley, Noel | Noel Langley | Adaptation, Translator | 1961 - 1981 | 3 | |
| Liles, Linda | Linda Liles | Actor | 1965 | 1 | |
| Lindsey, Shirley | Shirley Lindsey | Actor | 1965 | 1 | |
| Linka, György | György Linka | Actor | 1965 | 1 | |
| LeStrange, Philip | Philip LeStrange | Actor | 1965 | 1 | |
| Linnenbom, Lenora | Lenora Linnenbom | Actor | 1965 | 1 | |
| Lynch, Charles, O. | Charles O. Lynch | Actor | 1965 | 2 | |
| Lebin, Gayl | Gayl Lebin | Actor | 1965 | 1 | |
| Liaros, Pavlos | Pavlos Liaros | Actor | 1965 - 1979 | 2 | |
| Lacey, Catherine | Catherine Lacey | Actor | 1948 - 1965 | 7 | |
| Longwell, Dennis | Dennis Longwell | Actor | 1965 | 1 | |
| Luft, Gerd | Gerd Luft | Composer | 1965 | 1 | |
| Lipský, Lubomír | Lubomír Lipský | Actor | 1965 | 1 | |
| Lontai, István | István Lontai | Actor | 1944 | 1 | |
| Lohmann, Henry | Henry Lohmann | Actor | 1957 - 1965 | 3 | |
| Lima, Pontes, Paula | Pontes Paula Lima | Translator | 1961 - 1965 | 2 | |
| Lehoczky, Andrea | Andrea Lehoczky | Actor | 1998 | 1 | |
| Laczkó, Róbert, Vass | Róbert Vass Laczkó | Actor | 2004 - 2008 | 6 | |
| Lingenfelder, Charl-Johan | Charl-Johan Lingenfelder | Musical Director | 2015 - 2016 | 2 | |
| Le Roux, Birrie | Birrie Le Roux | Costume Designer | 2015 - 2016 | 2 | |
| Lodge, Linda | Linda Lodge | Actor | 2002 | 1 | |
| Lockwood, Tracie | Tracie Lockwood | Actor | 2002 | 1 | |
| Lahtela, Johannes | Johannes Lahtela | Actor | 2002 | 1 | |
| Lemmetti, Anna | Anna Lemmetti | Actor | 2002 | 1 | |
| Liesmäki, Emmi | Emmi Liesmäki | Actor | 2002 | 1 | |
| Lemaire, Vincent | Vincent Lemaire | Designer | 2002 - 2004 | 5 | |
| Larson, Linda Marie | Linda Marie Larson | Actor | 2002 | 1 | |
| Lishman, Tom | Tom Lishman | Sound Designer | 2002 | 10 | |
| Lim, Jennifer | Jennifer Lim | Actor | 2002 | 1 | |
| Lloyd Reynolds, James | James Lloyd Reynolds | Actor | 2002 | 3 | |
| Lucas, Rey | Rey Lucas | Actor | 2002 | 3 | |
| Laube, Miriam | Miriam Laube | Actor | 2002 | 1 | |
| Lettenewitsch, Frank | Frank Lettenewitsch | Actor | 2002 | 1 | |
| López Varela, Miguel | Miguel López Varela | Actor | 2002 | 3 | |
| Lorin, Helmut | Helmut Lorin | Actor | 2002 - 2005 | 3 | |
| Ludwig, Adam | Adam Ludwig | Actor | 2002 | 6 | |
| Lourenço, João | João Lourenço | Adaptation, Director | 2002 | 2 | |
| Lundy, Andrea | Andrea Lundy | Lighting Designer | 2002 | 1 | |
| Laukkarinen, Antti | Antti Laukkarinen | Actor | 2002 | 1 | |
| Loscavio, Elizabeth | Elizabeth Loscavio | Actor | 2002 - 2004 | 2 | |
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