| Løge, Marianne, | Marianne Løge | Director, Sound Designer | 2011 | 2 | |
| Læstadius, Lars-Levi | Lars-Levi Læstadius | Director, Producer, Translator | 1944 | 9 | |
| Losey, Joseph | Joseph Losey | Director, Producer | 1973 | 2 | |
| Lessa, Bia | Bia Lessa | Director, Producer | 2002 | 2 | |
| Lockwood, Jennifer | Jennifer Lockwood | Director | 2001 | 1 | |
| Lackner, Peter | Peter Lackner | Director | 2001 | 1 | |
| Laffan, Patrick, | Patrick Laffan | Director | 1975 – 1976 | 3 | |
| Lahti, Katariina | Katariina Lahti | Director | 1978 – 2003 | 2 | |
| Langham, Michael | Michael Langham | Director | 1996 | 1 | |
| Larthe, Paul | Paul Larthe | Director | 1941 | 1 | |
| Law, Caroline | Caroline Law | Director | 2004 | 1 | |
| Lazier, Gil | Gil Lazier | Director | 2003 – 2010 | 3 | |
| Leder, Peter | Peter Leder | Director | 1969 | 1 | |
| Legband, Dr. Paul, | Paul Legband (Dr. Paul Legband) | Director | 1912 | 3 | |
| Lehrman, Mike, | Mike Lehrman | Director | 1975 | 1 | |
| Lhota, Karel | Karel Lhota | Director | 1957 | 1 | |
| Lidon, Christophe | Christophe Lidon | Director | 2003 | 2 | |
| Liebens, Marc, | Marc Liebens | Director | 1975 – 1977 | 10 | |
| Liljeberg, Jorg | Jorg Liljeberg | Director | 1986 | 1 | |
| Linden, Gustaf, | Gustaf Linden | Director | 1914 – 1924 | 5 | |
| Linke, Sybille | Sybille Linke | Director | 1998 | 1 | |
| Lloyd, Matthew, | Matthew Lloyd | Director | 2005 – 2006 | 3 | |
| Löffler, Peter | Peter Löffler | Director | 1961 | 2 | |
| Lowrey, Sara | Sara Lowrey | Director | 1928 | 2 | |
| Lynn, Jack | Jack Lynn | Director | 1950 – 1953 | 2 | |
| Lyon, Marianne, | Marianne Lyon | Director | 2005 | 1 | |
| Lindsley, Charles F., | Charles F. Lindsley (Charles F. Lindsley) | Director | 1951 | 1 | |
| Lasoń, Władysław | Władysław Lasoń | Director | 1955 | 1 | |
| Larsen, Johannes Anker | Johannes Anker Larsen | Director | 1936 – 1943 | 3 | |
| Lacina, František, | František Lacina | Director | 1902 | 2 | |
| Leicester, Emilie, | Emilie Leicester | Director | 1891 | 1 | |
| Lehmann, Hans Dieter | Hans Dieter Lehmann | Director | 1973 | 1 | |
| Levick, Jemima | Jemima Levick | Director | 2010 | 1 | |
| Loy, Frances | Frances Loy | Director | 2011 | 1 | |
| Laading, Herman, | Herman Laading (Herman Laading) | Director | 1853 – 1861 | 4 | 1 |
| Lebrun, Theodor, | Theodor Lebrun | Director | 1888 | 1 | |
| Léon, Viktor, | Viktor Léon | Director | 1898 | 1 | |
| Lehmann, Julius, | Julius Lehmann | Director | 1899 – 1900 | 2 | |
| Lewinger, Ernst, | Ernst Lewinger | Director | 1897 – 1921 | 24 | |
| Linsemann, Paul, | Paul Linsemann | Director | 1903 – 1912 | 16 | |
| Lert, Dr. Ernst, | Ernst Lert (Dr. Ernst Lert) | Director | 1920 | 2 | |
| Litten, Dr. Heinz Wolfgang, | Heinz Wolfgang Litten (Dr. Heinz Wolfgang Litten) | Director | 1930 | 2 | |
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