| Kanimambo Holding AS | | 2019 |
| Kanin I Hatten AS | | 2026 |
| Kaniti Invest AS | Wholesale & retail | 2005 |
| KANJO-3 AS | Wholesale & retail | 2025 |
| Kankathas AS | Hospitality | 1998 |
| Kanna AS | Information & communication | 2023 |
| Kanoa AS | Information & communication | 2014 |
| Kanoka Invest AS | Financial services | 2013 |
| Kanon Catering AS | Hospitality | 2012 |
| Kanon Event AS | Arts & recreation | 2021 |
| Kanon Invest AS | Information & communication | 2013 |
| Kanon Major Ans | Information & communication | 2009 |
| Kanoq AS | Information & communication | 2022 |
| Kanova Holding AS | | 2026 |
| Kanpai AS | Hospitality | 2020 |
| Kanskje? AS | Administrative & support | 2023 |
| Kansler AS | Financial services | 2012 |
| Kansler II AS | Financial services | 2007 |
| Kanta Acvv AS | Real estate | 2021 |
| Kanta AS | Real estate | 2005 |
| Kanta FB4 AS | Real estate | 2020 |
| Kanta HVV AS | Real estate | 2021 |
| Kantaka AS | Financial services | 2005 |
| Kantar Norge AS | Professional & scientific | 2022 |
| Kantarellen Legesenter Da | Health & social care | 2007 |
| Kantega AS | Information & communication | 2003 |
| Kantik AS | Wholesale & retail | 2019 |
| Kantine T AS | Hospitality | 2020 |
| Kantineservice AS | Wholesale & retail | 1990 |
| Kantor AS | Real estate | 2022 |
| Kantos AS | Information & communication | 2026 |
| Kantsten AS | | 2021 |
| Kanva AS | Hospitality | 2014 |
| Kanvil AS | Information & communication | 2023 |
| Kanye Invest AS | Information & communication | 2018 |
| Kanzan Holding AS | | 2023 |
| Kanzant Group AS | Information & communication | 2025 |
| Kanzant Group Mipco AS | | 2026 |
| Kanzi Holding AS | | 2022 |
| Kao AS | Real estate | 2005 |
| Kao Norway AS | Wholesale & retail | 2014 |
| Kaoni AS | | 2023 |
| Kaos Norge AS | Manufacturing | 2013 |
| Kaospilotene Norge Da | Education | 2006 |
| Kaotisk AS | Hospitality | 2023 |
| Kap 100 AS | Real estate | 1992 |
| Kap Holding AS | Health & social care | 2005 |
| Kapa Holding AS | Real estate | 2019 |
| Kapa Invest AS | Information & communication | 2014 |
| Kapas AS | | 2022 |
| Kapazitet AS | Real estate | 2019 |
| Kapazitet Eiendom AS | Real estate | 2019 |
| Kapellvegen Eiendom AS | Real estate | 2025 |
| Kapellveien 17 AS | Real estate | 2019 |
| Kapelo AS | Education | 2004 |
| Kapelvo AS | Information & communication | 2026 |
| Kapergaarden AS | Professional & scientific | 2013 |
| Kapers & Oliven AS | Wholesale & retail | 2021 |
| Kapers Ans | Wholesale & retail | 1999 |
| Kapi Holding AS | | 2017 |
| Kapidron AI Solutions AS | Information & communication | 2025 |
| Kapilon Holding AS | Financial services | 2005 |
| Kapital Invest AS | | 1995 |
| Kapitalbase Holding AS | Professional & scientific | 2014 |
| Kapitalforvaltning Sentrum AS | | 2008 |
| Kapitalhuset AS | Professional & scientific | 2024 |
| Kapitalkontroll AS | Information & communication | 2018 |
| Kapitalspire AS | Financial services | 2014 |
| Kapitel AS | Real estate | 2019 |
| Kapittel AS | Professional & scientific | 2018 |
| Kapo AS | Administrative & support | 2022 |
| Kapp Assets AS | | 2024 |
| Kapp Oslo AS | Hospitality | 2020 |
| Kappa Bioscience AS | Manufacturing | 2006 |
| Kappa Invest AS | | 2023 |
| Kappland Arkitekter AS | Professional & scientific | 2015 |
| Kappmitra AS | Professional & scientific | 2018 |
| Kaprifol Litteratur AS | Arts & recreation | 2025 |
| Kapro AS | Real estate | 1990 |
| Kaps AS | | 2024 |
| Kaps Founders Fund AS | | 2024 |
| Kaps Founders Fund II AS | | 2025 |
| Kaps Founders Fund III AS | | 2026 |
| Kapsdevelopment AS | Information & communication | 2026 |
| Kapstad Invest AS | | 2005 |
| Kapstad Media AS | Information & communication | 2025 |
| Kaptein Huk AS | Information & communication | 2022 |
| Kaptein Oppegaardsv 3 AS | Real estate | 1963 |
| Kaptensgatan 1 Holding AS | | 2026 |
| Kar Eiendom AS | Real estate | 1998 |
| Kar Invest II AS | Financial services | 2005 |
| Kar Norway Holdco AS | Professional & scientific | 2016 |
| Kara & Kara Holding AS | | 2026 |
| Kara Import AS | Wholesale & retail | 2014 |
| Kara Invest AS | Real estate | 2004 |
| Kara Invest AS | | 2001 |
| Karabelli AS | Manufacturing | 2005 |
| Karaca AS | Wholesale & retail | 2021 |
| Karade Holding AS | | 2026 |
| Karaffel AS | | 2023 |