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| KMS Gruppen AS | Oslo | 2021 |
| KN Beauty AS | Kristiansand S | 2021 |
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| Knapphus Storbilverksted AS | Øvre Vats | 2024 |
| Knarvik Bodyclinic AS | Isdalstø | 2019 |
| Knarvik Hud Og Fotpleie Klinikk AS | Isdalstø | 2018 |
| Knivslipern AS | Ålesund | 2019 |
| Knock Out Barbershop AS | Ålesund | 2023 |
| Knutsen Auto Service AS | Blomsterdalen | 2011 |
| Koa Studio AS | Bodø | 2015 |
| Koba Christensen Begravelsesbyrå AS | Nyborg | 2020 |
| Kobber Frisør AS | Skien | 2014 |
| Kodal Bil AS | Kodal | 2024 |
| Kokelv Søm Og Duodji AS | Kokelv | 2023 |
| Kokk Til Leie AS | Ottersøy | 2018 |
| Kokken Bom AS | Nesttun | 2015 |
| Kokker I Kamp Da | Bærums Verk | 2008 |
| Kokslien Maskinservice AS | Snertingdal | 2022 |
| Kokstad Bilpleie Service Da | Kokstad | 2007 |
| Kokstad Bilpleie Spesialisten AS | Straume | 2023 |
| Kokstad Bilverksted AS | Kokstad | 2005 |
| Kolbotn Hud Og Velvære AS | Kolbotn | 2015 |
| Kolbotn Hudpleie AS | Kolbotn | 2005 |
| Kolbotn Hårstudio AS | Kolbotn | 1994 |
| Kolbotn Karosseri & Lakk AS | Ski | 1997 |
| Kolbu Bilservice AS | Kolbu | 2008 |
| Kollektivtrafikkens Personellservice SA | Oslo | 1995 |
| Kollerud Holding AS | Åmot | 2017 |
| Kollstad Lakk & Sandblåsing AS | Fagernes | 2011 |
| Kolltveit Auto AS | Kolltveit | 2025 |
| Kolstad Og Strand Elektro Rep. Da | Fagernes | 2006 |
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| Komite AS | Oslo | 2010 |
| Komma Frisør AS | Oslo | 1989 |
| Komma Frisør CM AS | Larvik | 2020 |
| Kompaniet Frisør AS | Rindal | 2011 |
| Kompis Hundesalong AS | Nesttun | 2025 |
| Kompiser AS | Husøysund | 2026 |
| Komplett Bilservice AS | Drammen | 2014 |
| Komponisten Frisørsalong AS | Kristiansand S | 1995 |
| Konas Bulkoppretting AS | Oslo | 2019 |
| Kongelf AS | Oslo | 2026 |
| Kongensgate Frisør Studio AS | Sandefjord | 2015 |
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| Kongsberg Autoservice AS | Kongsberg | 2024 |
| Kongsberg Bilpleiesenter AS | Kongsberg | 2014 |
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| Kongsberg Bilskade AS | Kongsberg | 2002 |
| Kongsberg Fotklinikk AS | Kongsberg | 2016 |
| Kongsberg Hudpleie AS | Kongsberg | 2013 |
| Kongsberg Nails and Beauty AS | Skollenborg | 2017 |
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| Kongsgaard Begravelsesbyrå AS | Notodden | 2020 |
| Kongsvinger Antirust AS | Kongsvinger | 2022 |
| Kongsvinger Begravelsesbyrå Grønlund AS | Flisa | 2023 |
| Kongsvinger Bilhåndvask Da | Kongsvinger | 2006 |
| Kongsvold AS | Øverbygd | 2005 |
| Konkav Atelier AS | Kongsvinger | 2024 |
| Konnerud Bilshine AS | Drammen | 2023 |
| Konnerud Hår & Velvære AS | Drammen | 2020 |
| Konows Total AS | Svelvik | 2013 |
| Konsept X SA | Bergen | 2017 |
| Konterud AS | Jessheim | 1999 |
| Konterud Holding AS | Jessheim | 2005 |
| Kontorservice Østfold Da | Yven | 2009 |
| Kontorsupport AS | Beisfjord | 2019 |
| Kontrast Frisør AS | Ålesund | 2013 |
| Konturklinikken AS | Moss | 2012 |
| Kooperativet SA | Oslo | 2013 |
| Kopervik Auto AS | Kopervik | 1986 |
| Kopervik Bilsenter - Karosseri AS | Kopervik | 2023 |
| Koppang Auto AS | Koppang | 1982 |
| Kopperå Vaskeri & Rengjøring AS | Kopperå | 2013 |
| Kork Holding AS | Vinstra | 2015 |
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| Kort & Godt AS | Moss | 2000 |
| Kortgarden Dekk Da | Kortgarden | 2021 |
| Kortnes Maskin AS | Lier | 1988 |
| Koryol AS | Steinkjer | 2025 |
| Kos Investeringer AS | Oppegård | 2018 |
| Kosmedic Hudklinikk AS | Namsos | 2021 |
| Kosmetikos Elisabeth AS | Glomfjord | 2021 |
| Koster Creatives AS | Oslo | 2022 |
| Koushan AS | Horten | 2021 |
| Kovostal S.R.O. | Cz-686 01 Uherské Hradiste | 2014 |
| Koz Frisør AS | Tiller | 2022 |
| KP Holding AS | Melhus | 2019 |
| KPC AS | Skien | 2018 |
| Kpin - Organisasjon for Koreansk Popkultur I Norge | | 2013 |
| KPK Service AS | Molde | 2020 |
| KR Frisør AS | Kristiansand S | 2021 |
| Krabyskogen Storbilsenter AS | Lena | 2000 |
| Kragerø & Drangedal Begravelsesbyrå AS | Sannidal | 2025 |
| Kranz Frisør AS | Askim | 2001 |
| Kras Auto AS | Sandefjord | 2024 |
| Kraus Holding AS | Råholt | 2005 |