| Jyrki Nissinen | | 2007–2018 | pencils, ink | | 2 |
| Jörg Risken | Germany | 2007–2021 | plot, script | | 2 |
| Jørn K. Petersen | Denmark | 1976–1986 | plot, script | | 2 |
 | Jørn Lier Horst | Norway | 2018 | plot, script | | 2 |
| Jürgen Bröker | | 2008 | plot, script | | 2 |
| K. Amler | | 1973–1976 | plot, script | | 2 |
| Kaija Kuiri | | 2001–2017 | plot, script | | 2 |
| Kaj Lund | Denmark | 1977 | plot, script | | 2 |
| Kalevi Wiik | | 1999–2017 | plot, script | | 2 |
| Kappazap | | 2024 | pencils, ink | | 2 |
| Karen Darboe | | 2023 | pencils, ink | | 2 |
| Kari Suomalainen | | 1979–1984 | plot, script, pencils, ink | | 2 |
| Karim Daoud | | 1987 | plot, script | | 2 |
| Karin Westrheim | | 2001–2010 | plot, script | | 2 |
| Karl Erik Watz | Denmark | 1975 | plot, script | | 2 |
| Karl Lagkerfelnt | | 1998 | pencils, ink | | 2 |
| Karl-Erik Tallmo | | 2005–2006 | plot, script | | 2 |
| Karl-Wilhelm Goez | | 1996–2000 | plot, script | | 2 |
 | Katja Centomo | Italy | 2000–2001 | plot | | 2 |
| Keith Chapman | | 1977–1979 | plot, script | | 2 |
| Keith Moseley | United States | 1986–1987 | pencils | | 2 |
| Keith Wilson | United States | 1995–1996 | pencils | | 2 |
| Kellog Adams | United States | 1957 | ink | | 2 |
| Ken Macklin | | 1994 | plot, script, pencils, ink | | 2 |
| Kenneth Veset | | 2012–2014 | plot, script, pencils, ink | | 2 |
| Kielo Viitalähde | | 2023 | pencils, ink | | 2 |
| Kim Dalsgaard | Denmark | 1999–2000 | plot, script | | 2 |
| Kim Hagen | Denmark | 2013–2014 | plot, script | | 2 |
| Kjeld Olsen | Denmark | 1991 | plot, script | | 2 |
| Kjell Fridh | | 1978–1982 | plot, script | | 2 |
| Klaus Bohn | | 1988–1989 | plot, script | | 2 |
| Klaus Spillman | | 1981–1983 | plot, script | | 2 |
| Klaus Zupfer | | 1989–1997 | plot, script | | 2 |
| Knut Paasche | | 2010 | plot, script | | 2 |
| Koos Schulte | | 2012 | plot, script | | 2 |
| Kretzchmer | Denmark | 1955–1956 | pencils | | 2 |
| Kristian Hellesund | | 2009–2018 | plot, script | | 2 |
| Kurt Møller | | 1978–1988 | plot, script | | 2 |
| Kyle Menke | | 2011–2014 | pencils | | 2 |
| L. Motta | | 1942 | plot, script | | 2 |
| LaRon Williams | | 1981 | ink | | 2 |
| Lamar Waldron | United States | 1991 | plot, script | | 2 |
| Lapiz | | 1980–1990 | pencils, ink | | 2 |
| Lars Gjertveit | | 1985–1989 | plot, script | | 2 |
| Lars Kaschke | | 1991–2007 | plot, script | | 2 |
| Laura F. | | 2011 | plot, script | | 2 |
| Laura Honkasalo | Finland | 2002–2014 | plot, script | | 2 |
| Laurence Aiach | | 1998 | plot, script | | 2 |
| Lauri Karhu | | 2023 | pencils, ink | | 2 |
| Lauri Peltola | | 2023 | plot, script, pencils, ink | | 2 |
| Lauri Timonen | | 2016 | plot, script | | 2 |
| Laurindo Sanchez Munhoz | Brazil | 1989–1994 | pencils, ink | | 2 |
| Leena Sarvas | | 2003–2017 | plot, script | | 2 |
 | Lelio Bonaccorso | Italy | 2017 | pencils | | 2 |
| Lenni Alanen | | 2023 | plot, script, pencils, ink | | 2 |
| Leo Ortolani | | 2005–2024 | plot, script, pencils, ink | | 2 |
| Leo Ylimäki | | 2021–2023 | plot, script, pencils, ink | | 2 |
| Leon Kreis | | 2022 | plot, script | | 2 |
| Les Clark | | 1973–1984 | pencils, ink | | 2 |
| Liisa Kuittinen | | 2010 | plot, script | | 2 |