| Kito AS | Kolltveit | 2024 |
| Kivima AS | Vear | 2017 |
| Kiwiskolen AS | Lierstranda | 2025 |
| KJ Gruppen AS | Ski | 2019 |
| KJ Travtjenester AS | Mogreina | 2016 |
| Kjell Tores Mat AS | Oslo | 2002 |
| Kjemperud Fus Barnehage AS | Geithus | 2018 |
| Kjernekraft Oslo AS | Oslo | 2020 |
| Kjerraten Barnehage SA | Drammen | 1997 |
| Kjerringhøgda AS | Oppegård | 2022 |
| Kjetil's Trafikkskole AS | Fredrikstad | 2025 |
| Kjøhr Molde AS | Molde | 2026 |
| Kjølbergskogen Barnehage AS | Sellebakk | 2022 |
| Kjølsdalen Montessoribarnehage SA | Kjølsdalen | 1995 |
| Kjølsdalen Montessoriskule SA | Kjølsdalen | 2012 |
| Kjør Trafikkskole AS | Ramnes | 1995 |
| Kjøreklar Trafikkskole AS | Fjellhamar | 2023 |
| Kjørfint Trafikkskole AS | Kristiansand S | 2013 |
| Kjørpent AS | Bergen | 2009 |
| KK Medic AS | Søgne | 2022 |
| KK Sportsinvest AS | Rong | 2021 |
| Kkfuskeland AS | Nittedal | 2024 |
| Kksk Holding AS | Os | 2020 |
| Klamer Holding AS | Hosle | 2017 |
| Klar for Fødsel Da | Ålesund | 2026 |
| Klar Kurs AS | Jevnaker | 2004 |
| Klar Til Sjøs AS | Flatåsen | 2026 |
| Klar Trafikkskole AS | Ålgård | 2023 |
| Klarforendring AS | Molde | 2025 |
| Klart Du Kan Trafikkskole AS | Ranheim | 2017 |
| Klart Nok AS | Fredrikstad | 2026 |
| Klas Golfskola | Bøverbru | 2004 |
| Klasseledelse AS | Nøtterøy | 2019 |
| Klds Service AS | Kolbotn | 2025 |
| Kleiva Naturbarnehage SA | Sortland | 2004 |
| Klem Barnehage AS | Kalandseidet | 2006 |
| Klepp Trafikkskole AS | Kleppe | 2005 |
| Kleppestemmen Fus Barnehage AS | Kleppe | 2018 |
| Klienter På Nett AS | Mysen | 2026 |
| Klifur Da | Oslo | 2026 |
| Klimaspillet AS | Ås | 2015 |
| Klingen Naturbarnehage SA | Rena | 1979 |
| Klingen Vekst AS | Steinkjer | 2005 |
| Klingsheim Invest AS | Kvernaland | 2026 |
| Klinikk Fjeld AS | Oslo | 2006 |
| Klinisk Pedagogisk Rådgivning AS | Bergen | 2025 |
| Klippenberg Invest AS | Hundvåg | 2023 |
| Klippene AS | Nesøya | 2018 |
| Klipra Barnehage SA | Ålesund | 1987 |
| Klokkargarden Barnehage AS | Åmli | 2021 |
| Klokkergaarden Kultur- Og Naturbarnehage AS | Drammen | 2022 |
| Klossen - Sio Barnehage AS | Oslo | 2022 |
| Klæbu Barnehage AS | Klæbu | 2019 |
| Kløfterhagen Barnehage AS | Oslo | 2021 |
| Kløvheim Naturbarnehage AS | Eikangervåg | 2006 |
| KM Dans Da | Blystadlia | 2013 |
| Kmea Holding AS | Halden | 2024 |
| KMH Consult AS | Krokelvdalen | 2014 |
| KMK Investing AS | Sande I Vestfold | 2019 |
| KN Job Consulting AS | Hafrsfjord | 2007 |
| Knallform AS | Sand | 2021 |
| Knarvik Barnehage AS | Isdalstø | 2008 |
| Knausen Fus Barnehage AS | Eidsvoll | 2019 |
| Knerten Familiebarnehage Da | Skien | 1996 |
| Knerten-Familiebarnehage Da | Våle | 2022 |
| Knowledgegroup AS | Oslo | 1998 |
| Knowledgetrack AS | Moss | 2003 |
| Knual AS | Flisa | 2022 |
| Knut Erik Production AS | Oslo | 2005 |
| Knut Nystad AS | Nittedal | 2016 |
| Knut Ole Mørk AS | Varteig | 2008 |
| Knærten Familiebarnehage AS | Oslo | 2013 |
| Knærten Fus Friluftsbarnehage AS | Klæbu | 2021 |
| Knøttene Familiebarnehage-Bydel Alna AS | Oslo | 2019 |
| Knøttne Familiebarnehage AS | Skien | 2016 |
| Ko-Lk Trafikkopplæring AS | Hyggen | 2022 |
| Kokk Og Gladgutt AS | Oslo | 2020 |
| Kol AS | Kristiansand S | 2002 |
| Kol Kompetanse AS | Oslo | 2025 |
| Kolbjørnsdatter Holding AS | Tvedestrand | 2014 |
| Kolbotn Trafikkskole AS | Drøbak | 1985 |
| Kolibri Healing AS | Brandbu | 2023 |
| Kolin AS | Charlottenlund | 2019 |
| Kollen Naturbarnehage AS | Saltnes | 2022 |
| Kollevoll Barnehage SA | Lyngdal | 1989 |
| Kolstad Trafikkskole AS | Bodø | 2013 |
| Kolvik Holding AS | Ålesund | 2017 |
| Kolåsbakken Barnehage SA | Oslo | 1998 |
| Kom Og Dans AS | Ingeberg | 1989 |
| Komet Trafikkskole Billingstad AS | Billingstad | 2025 |
| Kommanditbolaget Conference Design I Göteborg KB | 422 49 Hisingsbacka | 2010 |
| Kommo AS | Drøbak | 2017 |
| Komnorge AS | Oslo | 2021 |
| Kompass Karriere AS | Oslo | 2018 |
| Kompasskurs AS | Oslo | 2018 |
| Kompetanse Akademiet AS | Høvik | 2020 |
| Kompetanse AS | Tønsberg | 2019 |
| Kompetanse Gruppen AS | Oslo | 2020 |
| Kompetanse I Sør AS | Kristiansand S | 2002 |
| Kompetanse-Kompaniet Da | Nodeland | 2011 |