| Khan Taxi AS | Oslo | 2022 |
| KHD Transport AS | Salhus | 2026 |
| Khmt Holding AS | Torvastad | 2014 |
| Khonsyawashan Transport AS | Drammen | 2025 |
| Kian Fashion AS | Hamar | 2014 |
| Kid Eiendom AS | Gullaug | 2021 |
| Kidane Taxi Da | Lillestrøm | 2025 |
| Kiellands Services AS | Sandvika | 2015 |
| Kihls Transport AS | Kristiansand S | 2015 |
| Kildal Transport AS | Engavågen | 2012 |
| Kilemo Transport AS | Fjellstrand | 2020 |
| Kilenga AS | Vågå | 2026 |
| Kilenga Transport AS | Åsnes Finnskog | 2024 |
| Kilengt. 33 AS | Tønsberg | 2008 |
| Kim Bjørnars Transportforretning AS | Florø | 2025 |
| Kim Haugsdal AS | Knarrevik | 2023 |
| Kim Johansen Transport S.R.O. | Sk-Ziar Nad Hronom 965 63 | 2021 |
| Kimi Service AS | Klepp Stasjon | 2015 |
| Kindlistuen & Dahl AS | Øyer | 2009 |
| Kindlistuen & Dahl Da | Vestre Gausdal | 2001 |
| Kingo Rides AS | Fjellhamar | 2024 |
| Kingsrød AS | Borgenhaugen | 2007 |
| Kingsrød Eiendom AS | Borgenhaugen | 2012 |
| Kingsrød Transport AS | Borgenhaugen | 1971 |
| Kinnarps AB | Se-521 73 Kinnarp | 2000 |
| Kirkenes Bilopphuggeri AS | Bjørnevatn | 1990 |
| Kirkenes Industrial Logistics Area AS | Kirkenes | 2004 |
| Kirkenes International Logistics Hub AS | Kirkenes | 2023 |
| Kirkenes Port Service AS | Kirkenes | 2024 |
| Kirkenes Ship Agency AS | Kirkenes | 2020 |
| Kirkenes Taxi AS | Kirkenes | 2007 |
| Kirkenes Transport AS | Tana | 2015 |
| Kirkenes Transportsentral AS | Kirkenes | 1997 |
| Kirkenesterminalen AS | Kirkenes | 1996 |
| Kirkerud Parkeringshus AS | Vøyenenga | 1992 |
| Kirsebær AS | Kolbotn | 2021 |
| Kirti AS | Oslo | 2024 |
| Kiship AS | Kirkenes | 2010 |
| Kiss & Fly AS | Oslo | 2015 |
| Kistefos AS | Oslo | 1989 |
| Kistefos Corporate AS | Oslo | 2016 |
| Kistefos Equity Holding AS | Oslo | 2007 |
| Kistefos Equity Holdings AS | Oslo | 2014 |
| Kistefos International Investments AS | Oslo | 2016 |
| Kistefos Venture Capital AS | Oslo | 1996 |
| Kivi's Transport AS | Alta | 2003 |
| Kivijärvi Kran Og Transport AS | Straume | 2011 |
| KJ Transporttjenester AS | Lye | 2016 |
| Kjeldsberg Transporttjenester AS | Trondheim | 2020 |
| Kjell Aamland Entreprenør AS | Høvåg | 2012 |
| Kjell Olav Høiseth Transport AS | Siljan | 2014 |
| Kjelli Sørensen Transport AS | Jørpeland | 2025 |
| Kjellmann AS | Alta | 2002 |
| Kjellmann Torbjørn Og Torstein | Talvik | 1995 |
| Kjelsberg Transport AS | Melhus | 2020 |
| Kjelsås Kran Og Transport AS | Oppegård | 2016 |
| Kjemi Trans II AS | Paradis | 2010 |
| Kjemikalietank AS | Paradis | 2008 |
| Kjernlie AS | Braskereidfoss | 1998 |
| Kjetil's Tur AS | Åmotsdal | 2011 |
| Kjevik Ga Hangar AS | Færvik | 2022 |
| Kjevik Veteranfly SA | Kristiansand S | 2014 |
| Kjos Eiendom AS | Gardermoen | 2000 |
| Kjosavik Reiser AS | Sandnes | 2023 |
| Kjækan Fjord AS | Sørstraumen | 2020 |
| Kjærgård Transport & Containerutleie AS | Straume | 2023 |
| Kjærnes Marina AS | Vinterbro | 2026 |
| Kjærstad Transport AS | Gjerdrum | 2004 |
| Kjøde Kran Og Transport AS | Fiskå | 2016 |
| Kjølgård Transport AS | Lillehammer | 2020 |
| Kjøllefjord Skipsekspedisjon AS | Kjøllefjord | 2018 |
| Kjønstad & Gullerud Varebilene Da | Oslo | 1995 |
| Kjøpsvik Transport Og Multiservice AS | Kjøpsvik | 2017 |
| Kjør AS | Oslo | 2016 |
| Kjør Meg/Drive Me AS | Sandvika | 2025 |
| Kjørekontoret AS | Tromsø | 2006 |
| Kjøren Transport AS | Rindalsskogen | 2023 |
| KL Transport Da | Sande I Vestfold | 2006 |
| Klaipedos Transekspedicija Nuf | Lt-94101 Klaipeda | 2020 |
| Klaustad Transport AS | Finnsnes | 2006 |
| Klaveness AS | Oslo | 2011 |
| Klaveness Asia Pte. Ltd. | Oslo | 2016 |
| Klaveness Combination Carriers ASA | Oslo | 2018 |
| Klaveness Dry Bulk AS | Oslo | 2021 |
| Klaveness Finans AS | Oslo | 2008 |
| Klaveness Invest AS | Oslo | 2005 |
| Klaveness Ship Investments AS | Oslo | 2005 |
| Klaveness Ship Management AS | Oslo | 2011 |
| Klemmetsen Følgebil AS | Mjåvatn | 2021 |
| Klepp Spes Invest Holding AS | Kleppe | 2019 |
| Klepp Spesialtransport AS | Kleppe | 1998 |
| Kleva Holding AS | Soknedal | 2024 |
| Klevengen Transport AS | Harestua | 2011 |
| Klintra Expeditie BV | Nl-7904 Lg Hoogeveen | 2012 |
| KLK Investment AS | Paradis | 2017 |
| KLK Tank AS | Paradis | 2024 |
| KLM Termotransport AS | Bjørøyhamn | 2021 |
| KLM-ROYAL DUTCH AIRLINES Filial av utenlandsk foretak. NUF | Oslo | 1995 |
| Klock Transport AS | Skui | 2015 |
| Klopp Båthavn SA | Tolvsrød | 1957 |