| Liepiņa, Vilma | Vilma Liepiņa | Actor | 1955 | 1 | |
| López Torres, Ruben | Ruben López Torres | Composer | 1955 | 1 | |
| Lauenstein, Tilly | Tilly Lauenstein | Actor | 1955 | 1 | |
| Ledinek, Stanislav | Stanislav Ledinek | Actor | 1955 | 1 | |
| Ljugh, Esse W. | Esse W. Ljungh | Director | 1955 | 1 | |
| Lehn, Georg | Georg Lehn | Actor | 1955 | 1 | |
| Lehman, June | June Lehman | Actor | 1955 | 1 | |
| Lázničková, Jarmila | Jarmila Lázničková | Actor | 1955 - 1956 | 2 | 1 |
| Larsen, Edith | Edith Larsen | Actor | 1955 - 1956 | 2 | 1 |
| Lein, Torbjørn | Torbjørn Lein | Actor | 1955 - 1958 | 45 | |
| Lockerbie, Beth | Beth Lockerbie | Actor | 1955 - 1959 | 2 | |
| Liedholm, Lars-Erik | Lars-Erik Liedholm | Director | 1955 - 1963 | 2 | |
| Laine, Edvin | Edvin Laine | Actor, Director | 1955 - 1967 | 3 | 1 |
| Langrová, Milena | Milena Langrová | Actor | 1955 - 1971 | 2 | 1 |
| Lindström, Åke | Åke Lindström | Actor | 1955 - 1975 | 2 | |
| Lindqvist, Jan-Erik | Jan-Erik Lindqvist | Actor | 1955 - 1976 | 4 | |
| Leskovac, Mileta | Mileta Leskovac | Designer | 1955 - 1978 | 2 | |
| Ludt, Finn | Finn Ludt | Composer, Musical Director | 1955 - 2006 | 106 | 1 |
| Lindahl, Erna | Erna Lindahl | Actor | 1955 - 2006 | 2 | |
| Lancastar, Edna | Edna Lancastar | Mask Maker | 1956 | 1 | |
| Lavičková, Olga | Olga Lavičková | Costume Designer | 1956 | 1 | 1 |
| Leach, Dick | Dick Leach | Actor | 1956 | 1 | |
| Litvinoff, Valentina | Valentina Litvinoff | Choreographer | 1956 | 1 | |
| Lewis, Tommy | Tommy Lewis | Actor | 1956 | 1 | |
| Leonhardt, Wieland | Wieland Leonhardt | Mask Maker | 1956 | 1 | |
| Laichter, Prokop | Prokop Laichter | Costume Designer, Designer | 1956 | 2 | |
| Latiševs, Arkādijs | Arkādijs Latiševs | Actor | 1956 | 1 | |
| Lucignani, Luciano | Luciano Lucignani | Adaptation, Director | 1956 | 3 | |
| Lutz, Luc | Luc Lutz | Actor | 1956 | 1 | 1 |
| Larsen, William | William Larsen | Actor | 1956 | 1 | |
| Lilly, Patricia | Patricia Lilly | Actor | 1956 | 1 | |
| Lazanis, Giorgos | Giorgos Lazanis | Actor | 1956 | 1 | |
| Lepetic, Jozo | Jozo Lepetic | Actor | 1956 | 1 | |
| Lauridsen, Karen | Karen Lauridsen | Actor | 1956 | 1 | |
| Leckel, John | John Leckel | Actor | 1956 | 1 | |
| Lauterbach, Ulrich | Ulrich Lauterbach | Director | 1956 | 1 | |
| Lazo, José | José Lazo | Actor | 1956 | 1 | 1 |
| Leipnitz, Harald | Harald Leipnitz | Actor | 1956 | 1 | |
| Lieven, Werner | Werner Lieven | Actor | 1956 | 1 | |
| Landauer, Gustav | Gustav Landauer | Actor | 1956 | 1 | |
| Lawrence, Billee | Billee Lawrence | Designer | 1956 | 1 | |
| Lutz, Pieter | Pieter Lutz | Actor | 1956 | 5 | |
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