| Lina Pietravalle | | 1933–1934 | plot, script | | 2 |
| Lise Myhre | | 2004–2011 | plot, script, pencils, ink | | 2 |
| Lise Sandager | Denmark | 1977 | plot, script | | 2 |
| Ljoeba Goerova | | 1999–2002 | pencils, ink | | 2 |
| Lorenza Cingoli | | 2023 | plot, script | | 2 |
| Lori Tyminski | | 2012–2013 | pencils, ink | | 2 |
| Louise Lindberg | | 2008–2009 | plot, script, pencils, ink | | 2 |
| Luca Casalanguida | | 2010 | pencils, ink | | 2 |
| Luciano Marcato | | 2007–2009 | pencils | | 2 |
| Ludivine Loncle | | 2023 | plot, script | | 2 |
| Lugli | | 1983–1984 | plot, script | | 2 |
| Luigi Codazzi | | 1999–2000 | plot, script | | 2 |
 | Luigi Mignacco | Italy | 1984–1985 | plot, script | | 2 |
| Luigi Motta | | 1948 | plot, script | | 2 |
| Lukas Persson | | 2021–2025 | plot, script, pencils, ink | | 2 |
| Lysander Martin | | 2019–2021 | plot, script | | 2 |
| Léopol Bernier | | 2021–2022 | plot, script, pencils, ink | | 2 |
| M. Gerchambeau | | 1980–1983 | plot, script | | 2 |
| M. López | | 1971 | pencils, ink | | 2 |
| Matteo Venturi | | 2011–2013 | plot, script | | 2 |
| Maarten J. de Meulder | Netherlands | 1976–1978 | plot, script | | 2 |
| Mads Stoumann | | 1994–2007 | plot, script | | 2 |
| Magnus | | 1994–1995 | pencils, ink | | 2 |
| Maija 9 v | | 2023 | pencils, ink | | 2 |
| Maija Länsimäki | | 2004–2017 | plot, script | | 2 |
| Maija Mattila | | 2021 | plot, script, pencils, ink | | 2 |
| Maija Valkama | | 2007–2008 | plot, script | | 2 |
| Mala Wang-Naveen | | 2007–2008 | plot, script | | 2 |
| Malcolm Kennedy | | 1983–1985 | plot, script | | 2 |
| Malcolm Morrison | | 1995–1996 | plot, script | | 2 |
| Manon Berlang | Netherlands | 2016 | plot, script | | 2 |
| Manuel Eduardo López | | 1968–1969 | pencils, ink | | 2 |
| Manuel Rojas | Chile | 1967–1968 | pencils, ink | | 2 |
| Mara Dussia | | 1935 | plot, script | | 2 |
| Marc Cuadrado | | 2010 | pencils, ink | | 2 |
| Marc-André | | 2000–2003 | plot, script | | 2 |
| Marcel De Neidels | | 2008–2009 | plot, script | | 2 |
| Marcel Gotlib | | 1960–2006 | pencils, ink | | 2 |
| Marcel Rouffa | | 1984–1985 | plot | | 2 |
| Marcello De Martino | Italy | 2008 | pencils | | 2 |
| Marco A. Cortez | | 2022–2023 | pencils | | 2 |
| Marco Aurélio S. Sales Aragão | Brazil | 1987 | ink | | 2 |
| Marco Ciardi | | 2025 | plot, script | | 2 |
| Marco Dominici | | 2015 | pencils | | 2 |
| Marco Esposto | | 2013 | plot, script | | 2 |
| Marco Failla | | 2014 | pencils | | 2 |
| Marco Guardanti | | 2011–2013 | plot, script | | 2 |
| Marco Mastrazzo | | 2023 | pencils, ink | | 2 |
| Marco Morello | | 2013–2020 | plot, script | | 2 |
| Marco Raffaelli | | 2024 | pencils, ink | | 2 |
| Marco Valcarenghi | Italy | 2022–2023 | ink | | 2 |
| Marcos Tavares Costa | | 2014–2016 | plot, script | | 2 |
| Maria Peirano | Italy | 1982 | plot, script, pencils, ink | | 2 |
| Maria Poblete | | 1993–1997 | plot, script | | 2 |
| Marian Cregan | | 1996–1998 | plot, script | | 2 |
| Marieke Aucante | | 1981 | plot, script | | 2 |
| Marije Jansen | | 2025 | plot, script | | 2 |
| Marina Migliavacca Marazza | | 2019 | plot, script | | 2 |
| Mario Carosella | | 2026 | plot, script | | 2 |
| Mario Gomboli | | 1994–2001 | plot, script, pencils, ink | | 2 |