 | Mario Perrotta | | 2022–2024 | plot, script, ink | | 2 |
| Mario Sbattella | Italy | 1956 | pencils, ink | | 2 |
| Marjatta Palander | | 2004–2017 | plot, script | | 2 |
| Mark Brooks | | 2025 | pencils, ink | | 2 |
| Mark Kausler | United States | 1989–2011 | plot, script, pencils, ink | | 2 |
| Markku Henriksson | | 2010–2011 | plot, script | | 2 |
| Markku Koski | | 1996–2002 | plot, script | | 2 |
| Markku Paretskoi | Finland | 2001–2011 | plot, script, pencils, ink | | 2 |
| Markus Vainio | | 2021–2023 | plot, script, pencils, ink | | 2 |
| Marlais Lüthi | | 2025 | plot, script, pencils, ink | | 2 |
| Marta Antellini | Italy | 1997 | plot, script | | 2 |
| Martin Müller | | 1993–1994 | plot, script | | 2 |
| Martin Neuner | | 2020 | plot, script | | 2 |
| Martin Sanchez | | 2026 | pencils, ink | | 2 |
| Martin Schottky | | 1981 | plot, script | | 2 |
| Martin Zwiebelberg | | 1986–1987 | plot, script | | 2 |
| Martina Forti | | 2023 | plot, script | | 2 |
| Martina Gerhardt | | 1984–1985 | plot, script | | 2 |
| Martti Tiainen | | 1985–1986 | plot, script | | 2 |
| Mary Bierbaum | United States | 1991 | plot, script | | 2 |
| Mary Blair | | 2001 | pencils, ink | | 2 |
| Mary Tirpak | | 1980–1981 | plot, script | | 2 |
| Masa Pulkkinen | | 1982–2000 | pencils, ink | | 2 |
| Massimo Giacon | | 1994–2024 | pencils, ink | | 2 |
| Massimo Rocca | Italy | 2002–2015 | pencils | | 2 |
| Mathieu Bert | | 2019–2022 | plot, script | | 2 |
| Mathilda Purea | | 2021 | plot, script | | 2 |
| Matias Sahinvaara | | 2021 | plot, script, pencils, ink | | 2 |
| Mats Gullikstad | | 2007 | plot, script | | 2 |
| Mats Nilsson | | 2011–2025 | plot, script | | 2 |
| Matteo De Longis | | 2024 | pencils, ink | | 2 |
| Matthew Willetts | United Kingdom | 1992 | script | | 2 |
| Matthias Kringe | | 1996–1999 | plot, script, pencils, ink | | 2 |
| Matthias Oppermann | | 2000–2003 | plot, script, pencils, ink | | 2 |
| Matti Hagelberg | | 1996–2001 | pencils, ink | | 2 |
| Matti Pääkkönen | | 2002–2017 | plot, script | | 2 |
| Mattia Grossi | | 2020 | plot, script | | 2 |
| Mattia Marzi | | 2026 | plot, script | | 2 |
| Mattia Simeoni | | 2011–2013 | plot, script | | 2 |
| Mauno Koski | | 1999–2017 | plot, script | | 2 |
| Maurizio Castellaro | Italy | 1991 | plot, script | | 2 |
| Maurizio Nichetti | | 1993–2026 | plot, script | | 2 |
| Mauro Belfiore | | 2024 | pencils, ink | | 2 |
| Maurício Nóbrega | | 1992 | plot, script | | 2 |
| Max Improving | | 2018–2020 | plot, script, pencils, ink | | 2 |
| Maximilien Chailleux | | 2016–2018 | plot, script | | 2 |
| Mazu | | 2018–2019 | pencils, ink | | 2 |
| Melissa Lagonegro | | 2015–2017 | plot | | 2 |
| Menotti | | 2014–2023 | plot, script, pencils, ink | | 2 |
| Michael Bortei-Doku | | 1992–1993 | script | | 2 |
| Michael Buckhoff | | 2012–2013 | plot, script | | 2 |
| Michael Engler-Kellermann | | 1985 | plot, script | | 2 |
| Michael Griessler | | 2020–2021 | plot | | 2 |
| Michael Maney | | 2009–2010 | plot, script | | 2 |
| Michael Teitelbaum | | 1980 | plot, script | | 2 |
| Michaël Rochoy | | 2024–2025 | plot, script | | 2 |
| Michel Denni | | 1979 | plot, script | | 2 |
| Michel Kiwic | | 2020–2021 | script | | 2 |
| Michelangelo La Neve | Italy | 2004–2005 | plot, script | | 2 |
| Michele Monte | | 2024–2025 | pencils, ink | | 2 |