| Kreativ by C AS | Oslo | 2018 |
| Kreativ Transport AS | Siggerud | 2006 |
| Kreiss Norge Nuf | Lv-2167 Riga | 2016 |
| Kringstad Båtlag SA | Molde | 1979 |
| Krisanto AS | Fetsund | 2025 |
| Kriss AS | Trondheim | 2005 |
| Krista AS | Hommelvik | 2017 |
| Kristensen & Bue Transport AS | Jessheim | 2013 |
| Kristensens Transport AS | Nord-Statland | 1982 |
| Kristian Bromseth AS | Saksvik | 2019 |
| Kristian Gerhard Jebsen Group Limited Nuf | Oslo | 2010 |
| Kristian Gerhard Jebsen Skipsrederi AS | Bergen | 1954 |
| Kristian Jebsens Rederi AS | Hjellestad | 1988 |
| Kristiania Bulkcarriers AS | Oslo | 2001 |
| Kristiania Bulkcarriers Inc | Oslo | 1998 |
| Kristiania Visergutkontor AS | Oslo | 1986 |
| Kristiansand Dampskipsselskap Ans | Oslo | 2000 |
| Kristiansand Line AS | Oslo | 2005 |
| Kristiansand Taxi SA | Kristiansand S | 2008 |
| Kristiansen Bilberging Og Bilutleie AS | Kongsvinger | 2011 |
| Kristiansen Kran & Transport AS | Moss | 2017 |
| Kristiansen Kran & Transport Holding AS | Moss | 2017 |
| Kristiansen Logistikk AS | Oppegård | 2011 |
| Kristiansen Og Langåker Transport AS | Åfarnes | 1995 |
| Kristiansen Transport AS | Årnes | 2014 |
| Kristiansen Transportmegling AS | Oslo | 2003 |
| Kristiansund Base AS | Averøy | 2009 |
| Kristiansund Parkering AS | Kristiansund N | 2002 |
| Kristiansund Privatparkering AS | Kristiansund N | 2004 |
| Kristiansund Taubåtservice AS | Frei | 2021 |
| Kristiansund Taxi SA | Kristiansund N | 1995 |
| Kristiansund Turbiler Da | Kristiansund N | 2011 |
| Kristoffer Andersen Transport AS | Alta | 2019 |
| Kristoffer Antonsen AS | Fonnes | 2024 |
| Kristoffer Kjos AS | Hønefoss | 1998 |
| Kritran AS | Trondheim | 2002 |
| Kro Multiservice Transport AS | Bokn | 2023 |
| Krog Transport AS | Ørje | 2013 |
| Krogstads Dampskibsrederi AS | Oslo | 1924 |
| Krogstads Shipping AS | Saltnes | 1924 |
| Krok & Transport AS | Magnor | 2018 |
| Krok Og Landbruk AS | Eidsvoll | 2015 |
| Krokan Transport AS | Oslo | 2007 |
| Krokbilen AS | Sagstua | 2020 |
| Kroken Taxi AS | Vågå | 2020 |
| Krokfrakt AS | Namsos | 2024 |
| Kroktrans AS | Ålesund | 2017 |
| Kroktransport AS | Etne | 2018 |
| Kronstadparken Parkering AS | Bergen | 2011 |
| Krossen Transport AS | Helleland | 2026 |
| Krossobanen AS | Rjukan | 1990 |
| Krown Fredrikstad AS | Fetsund | 2017 |
| Kruke Båthavn Da | Hvasser | 1996 |
| Krzysztof Pieciak - Uslugi Podwodne Nuf | 38-115 Baryczka | 2026 |
| Krzysztof Romanowski | 84-230 Rumia | 2019 |
| Krzysztof Rudnicki Uslugi Transportowe I Handel | Pl-13-220 Rybno | 2022 |
| Krøderen Transportservice AS | Krøderen | 2011 |
| Krøtø-Olsen Transport AS | Harstad | 2014 |
| KS Borgheim Shipping | Nøtterøy | 1989 |
| Ks-Bilhjelp AS | Kristiansand S | 2014 |
| KSH Transport AS | Skien | 1986 |
| KSM Nord AS | Mo I Rana | 2015 |
| KSN Invest AS | Godøya | 2018 |
| KST AS | Andebu | 2008 |
| KST Logistikk AS | Hokksund | 2024 |
| KTM Holding AS | Avaldsnes | 1992 |
| KTM Shipping AS | Avaldsnes | 1981 |
| KTS Transport AS | Oslo | 2023 |
| Kuehne + Nagel AS | Oslo | 1990 |
| Kuehne + Nagel Limited | Uxbridge Ub11 1 Fg | 2022 |
| Kugan Studio AS | Oslo | 2016 |
| Kuholmen Marina AS | Kristiansand S | 2026 |
| Kuljetus Niko Penttilä OY | Fi-90420 Oulu | 2026 |
| Kuljetusliike Ville Silvasti OY | Hellvik | 2017 |
| Kulleseid Holding AS | Bergen | 2022 |
| Kulleseid Kran AS | Bergen | 2012 |
| Kulturhuset Backes Bu AS | Farsund | 2016 |
| Kunnskapskilden AS | Nesttun | 2024 |
| Kunst Nord AS | Oslo | 2013 |
| Kurer Bud & Transport Da | Stavanger | 2000 |
| Kurer Distribusjon Da | Stavanger | 2004 |
| Kurer Logistikk AS | Kongsvinger | 2011 |
| Kurt & Pål Kristoffersen AS | Krokstadelva | 1987 |
| Kurt Einarsen AS | Skjervøy | 2007 |
| Kurt Magne Nilsen AS | Rypefjord | 2013 |
| Kurt Syversen Transport Og Eiendomsservice AS | Oslo | 2006 |
| Kurth Norge AS | Alta | 2012 |
| Kurås Interiør Transport AS | Sofiemyr | 2017 |
| Kurér AS | Kongsvinger | 2001 |
| Kushar Transport AS | Skien | 2022 |
| Kustbemanning I Väst AB | Se-458 94 Stigen | 2025 |
| Kustos AS | Oslo | 2002 |
| Kvadratera Invest 13 AS | Kongsberg | 2020 |
| Kvala Buss & Taxi AS | Kopervik | 1998 |
| Kvaleid Shipping AS | Høvik | 1996 |
| Kvalitet Service AS | Oslo | 2024 |
| Kvalitettransport AS | Drammen | 2025 |
| Kvalsund Transport Og Utleie AS | Kvalsund | 2026 |
| Kvam Cruise Port AS | Oslo | 2026 |
| Kvam Flytting & Transport AS | Porsgrunn | 2025 |