| Leboeuf, Diane | Diane Leboeuf (Diane Leboeuf) | Sound Designer | 1995 | 1 | |
| Linds, Brian | Brian Linds (Brian Linds) | Sound Designer | 2007 | 1 | |
| Lloyd, Dan | Dan Lloyd (Dan Lloyd) | Sound Designer | 1996 | 1 | |
| Leigh, Nathan | Nathan Leigh (Nathan Leigh) | Sound Designer | 2005 | 1 | |
| Leonard, John A. | John A. Leonard (John A. Leonard) | Sound Designer | 1990 - 2015 | 10 | |
| Lund, Kåre Johan | Kåre Johan Lund (Kåre Johan Lund) | Sound Designer | 1992 | 1 | |
| Lønaas, Hans Anders | Hans Anders Lønaas (Hans Anders Lønaas) | Sound Designer | 1995 | 1 | |
| Lønnås, Ole Jørgen | Ole Jørgen Lønnås (Ole Jørgen Lønnås) | Sound Designer | 2005 | 1 | |
| Landsem, Erik Sørdal | Erik Sørdal Landsem (Erik Sørdal Landsem) | Sound Designer | 2006 | 1 | |
| Lanzén, Rickard | Rickard Lanzén (Rickard Lanzén) | Sound Designer | 2008 | 10 | |
| Lyslo, Kolbjørn | Kolbjørn Lyslo (Kolbjørn Lyslo) | Sound Designer | 2010 - 2011 | 2 | |
| Liffe, - | - Liffe (- Liffe) | Sound Designer | 2011 | 1 | |
| Lark, Alistair | Alistair Lark | Sound Designer | 1997 | 1 | |
| Laxton, Emma | Emma Laxton | Sound Designer | 2009 - 2016 | 3 | |
| Loureiro, Augusto | Augusto Loureiro | Sound Designer | 1992 | 1 | |
| LeGrand, Stephen | Stephen LeGrand | Sound Designer | 1993 | 2 | |
| Ljungblom, Tryggwe | Tryggwe Ljungblom | Sound Designer | 1994 | 1 | |
| LeBrecht, James | James LeBrecht | Sound Designer | 1980 | 1 | |
| Lanchbery, John | John Lanchbery | Sound Designer | 1986 - 1996 | 2 | |
| Lamb, Jill | Jill Lamb | Sound Designer | 1967 | 1 | |
| Lishman, Tom | Tom Lishman | Sound Designer | 2002 | 10 | |
| Lounsbery, Michael | Michael Lounsbery | Sound Designer | 2002 | 1 | |
| Lawrence, Walter | Walter Lawrence | Sound Designer | 1989 | 1 | |
| Leonard, John | John Leonard | Sound Designer | 2003 - 2016 | 9 | |
| Lind, Roger | Roger Lind | Sound Designer | 2004 | 1 | |
| Ley, Philip | Philip Ley | Sound Designer | 2004 | 1 | |
| Langley, Steff | Steff Langley | Sound Designer | 1989 | 1 | |
| Lanes, Elliot | Elliot Lanes | Sound Designer | 2006 | 1 | |
| Labor, Tim | Tim Labor | Sound Designer | 2008 | 1 | |
| Lewis, Edward | Edward Lewis | Sound Designer | 2008 | 1 | |
| Ley, Phillip | Phillip Ley | Sound Designer | 2009 | 1 | |
| Luessmann, Chris | Chris Luessmann | Sound Designer | 2010 | 1 | |
| Lawrence, Tony | Tony Lawrence | Sound Designer | 2011 | 1 | |
| Lesmeister, Todd | Todd Lesmeister | Sound Designer | 2012 | 1 | |
| Lancaster, Veronica, J. | Veronica J. Lancaster | Sound Designer | 2013 | 1 | |
| Leitner, Kyle | Kyle Leitner | Sound Designer | 2013 | 1 | |
| Lisinski, Kassia | Kassia Lisinski | Sound Designer | 2016 | 1 | |
| Lönnroos, Björn | Björn Lönnroos | Sound Designer | 2000 | 1 | |
| Lembo, Matt | Matt Lembo | Sound Designer | 2000 | 1 | |
| Liu, Bo | Bo Liu | Sound Designer | 2014 - 2015 | 6 | |
| Langvik, Nils Jakob | Nils Jakob Langvik | Sound Designer | 2017 | 17 | |
| Liljestrand, Eric | Eric Liljestrand | Sound Designer | 1993 | 1 | |
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