| Kahrs Hansen AS | Information & communication | 2005 |
| Kaigaten Kaffe Og Vinbar AS | Hospitality | 2021 |
| Kaigaten Klipp AS | Other services | 2020 |
| Kaiman Idé AS | Professional & scientific | 2013 |
| Kaimar AS | Professional & scientific | 2022 |
| Kainth Holding AS | | 2019 |
| Kakkmaddafakka AS | Arts & recreation | 2014 |
| Kaktus Film Ans | Information & communication | 2002 |
| Kaktus Hårstudio AS | Other services | 2023 |
| Kaland Holding AS | Real estate | 2005 |
| Kalast Invest AS | | 2022 |
| Kaldåga Kraft AS | Energy | 2021 |
| Kaleidoscope Nordic AS | Professional & scientific | 2014 |
| Kalfaret Legesenter Da | Health & social care | 2001 |
| Kalfarlien AS | Financial services | 2014 |
| Kalfarveien 48 AS | Real estate | 2017 |
| Kalfarveien 99 AS | Real estate | 1986 |
| Kalhagen Invest AS | | 2026 |
| Kalmarhuset Dagligvarer AS | Wholesale & retail | 2010 |
| Kalmarhuset Tannklinikk AS | Health & social care | 2025 |
| Kalmu Utleie AS | Real estate | 2017 |
| Kalnor Eiendom AS | Real estate | 2017 |
| Kalsvaag AS | | 2010 |
| Kalve Ocean AS | Real estate | 2025 |
| Kaman AS | Financial services | 2018 |
| Kamara Bigård AS | Agriculture & fishing | 2022 |
| Kameleon Beheer BV | | 2014 |
| Kamilla Aabø Holding AS | | 2023 |
| Kanagawa Holding AS | | 2025 |
| Kanalspesialistene AS | Education | 2012 |
| Kanalveien 1 Holding AS | Real estate | 2021 |
| Kanalveien 103 AS | Real estate | 2003 |
| Kanalveien 107 Eiendom AS | Real estate | 2007 |
| Kanalveien 109 AS | Real estate | 2008 |
| Kanalveien 11 AS | Real estate | 2009 |
| Kanalveien 48 AS | Real estate | 1979 |
| Kanalveien 50 AS | Real estate | 2003 |
| Kanalveien 52 B AS | Real estate | 2006 |
| Kanalveien 52C AS | Real estate | 2018 |
| Kanalveien 7 AS | Real estate | 2002 |
| Kanalveien 90 AS | Real estate | 2017 |
| Kanalveien Eiendom AS | Real estate | 2021 |
| Kanalveien Utbygging AS | Real estate | 2018 |
| Kandal Holding AS | Real estate | 2021 |
| Kane Invest AS | | 2025 |
| Kannhau AS | | 2024 |
| Kaos Bergen AS | Hospitality | 2008 |
| Kaoskompaniet AS | | 2023 |
| Kaotek AS | Professional & scientific | 2026 |
| Kapabel Forlag AS | Information & communication | 2005 |
| Kapuschongen AS | Professional & scientific | 2023 |
| Karat Event AS | Professional & scientific | 2018 |
| Kardiodex AS | Health & social care | 2016 |
| Karelsmarkens Byggelag AS | Households | 1952 |
| Karenbakken Boliglag AS | Households | 1946 |
| Karensfryd Eiendom AS | Real estate | 2025 |
| Kari Songstad Ans | Real estate | 2000 |
| Karijo Sitt Selskap AS | Professional & scientific | 2025 |
| Karin Ulvestad Hjørnevik AS | Professional & scientific | 2022 |
| Karina Birkelund Johansen | Professional & scientific | 2013 |
| Karisma & Dark Essence Records AS | Information & communication | 2012 |
| Karito AS | Wholesale & retail | 2000 |
| Karl Andre Lerum Lund AS | | 2025 |
| Karlsen Shipping Norway AS | Transport & logistics | 1992 |
| Karlsen Tannteknikk Laboratorium AS | Manufacturing | 2000 |
| Karma Kaigaten AS | Other services | 2014 |
| Karmsundgaten 56 AS | Real estate | 2007 |
| Karoline & Ingeborg Rep. Og Søm Da | Manufacturing | 2005 |
| Karoline Engelsen AS | Wholesale & retail | 2024 |
| Karos Shipping AS | Transport & logistics | 2006 |
| Karriereflyt AS | Administrative & support | 2022 |
| Karstein B Vågenes AS | Wholesale & retail | 1981 |
| Kasi AS | Information & communication | 2025 |
| Kasi Møbler Og Interiør AS | Wholesale & retail | 2003 |
| Kassett AS | Wholesale & retail | 2025 |
| Katharsis AS | Professional & scientific | 2022 |
| Katinvest AS | | 2021 |
| Katria AS | Information & communication | 2023 |
| Kattuglebrotet Huseierlag Ba | Real estate | 2006 |
| Kattuglen Huseierlag SA | Real estate | 2007 |
| Kaurel Holding AS | | 2020 |
| Kavitha AS | | 2023 |
| Kavli Property AS | | 2026 |
| Kawi Software AS | Information & communication | 2024 |
| Kaylan AS | | 2002 |
| KB Campus Matre AS | Real estate | 2021 |
| KB DC Børdalen AS | Information & communication | 2019 |
| KB Ifs Matre AS | Information & communication | 2020 |
| KB Infrastructure AS | Energy | 2018 |
| KB Matre 2 AS | Information & communication | 2025 |
| KB Serveringsdrift AS | Hospitality | 2025 |
| KB Sogn Datasenter AS | Information & communication | 2020 |
| KB2 Invest AS | Transport & logistics | 2025 |
| KBB Medic AS | Information & communication | 2013 |
| Kbe AS | Real estate | 2020 |
| KBS AS | Financial services | 2014 |
| KDA43 AS | Real estate | 2002 |
| KDS Helland AS | Health & social care | 2026 |
| Kehm AS | Real estate | 1990 |
| Keia AS | Financial services | 2018 |