| KD Consult AS | Hospitality | 2015 |
| KD Kapital AS | Real estate | 2021 |
| KD Teck AS | Information & communication | 2014 |
| Kda AS | | 2018 |
| KDB Norway AS | Construction | 2024 |
| Kdesign Export AS | Professional & scientific | 2018 |
| Kdhs Invest AS | Real estate | 2019 |
| Kdo Shift Manager AS | Information & communication | 1995 |
| Kdons Invest AS | | 2024 |
| KDQ Eiendom AS | Real estate | 2012 |
| Ke Haaland AS | | 2018 |
| Ke Invest AS | Real estate | 2019 |
| Ke Ruud Invest AS | Financial services | 2014 |
| Keas SPV AS | | 2022 |
| Keaton Beckett Group AS | Professional & scientific | 2018 |
| Keb Holding AS | | 2019 |
| Keba AS | Financial services | 2005 |
| Kebab & Grillhuset Ans | Hospitality | 1997 |
| Kebab Biten AS | Hospitality | 2006 |
| Kebab Biten Solli AS | Wholesale & retail | 2022 |
| Kebab Hot Oslo AS | Hospitality | 2024 |
| Kebab Kongen AS | Real estate | 2022 |
| Kebabish Norge AS | Hospitality | 2023 |
| Kebabish Original Oslo AS | Hospitality | 2015 |
| Kebbe Productions Da | Arts & recreation | 2004 |
| Kebelli AS | | 2019 |
| Kebg Holding AS | | 2024 |
| Kebnekaise Invest 4 AS | Real estate | 2018 |
| Kebs AS | Real estate | 2015 |
| Kechu Bidco AS | Manufacturing | 2019 |
| Kechu Holdco AS | | 2019 |
| Kechu Midco AS | Financial services | 2019 |
| Kee Holding AS | Administrative & support | 2015 |
| Keeep AS | Wholesale & retail | 2025 |
| Keel AS | Professional & scientific | 2025 |
| Keells Computer Services Ltd | | 2001 |
| Keelstone AS | | 2026 |
| Keep AS | Financial services | 2016 |
| Keep Expanding AS | Professional & scientific | 2011 |
| Keep IT High Records AS | Information & communication | 2022 |
| Keep on Rocking AS | Real estate | 2013 |
| Keep on Walking AS | | 2014 |
| Keep Oslo AS | Professional & scientific | 2022 |
| Keep-It Technologies AS | Professional & scientific | 2001 |
| Keepitsafe Norway AS | Information & communication | 2005 |
| Keepwalking AS | Financial services | 2018 |
| Keer Invest AS | | 2023 |
| Keesing Norge AS | Wholesale & retail | 2021 |
| Keet Holding AS | Professional & scientific | 2021 |
| Kef Robotics Norway AS | Information & communication | 2024 |
| KEF2HR AS | Real estate | 2019 |
| Keh Invest AS | Professional & scientific | 2005 |
| Keh-Holding AS | | 2023 |
| Kei Invest AS | | 2019 |
| Keil Consulting AS | Information & communication | 2008 |
| Keilen Holding AS | Administrative & support | 1997 |
| Keim Norge AS | Wholesale & retail | 2024 |
| Keipi AS | Education | 2023 |
| Keiron AS | Education | 2016 |
| Keis AS | Wholesale & retail | 2007 |
| Keith Goodtown Industries AS | Financial services | 2018 |
| Kej Invest AS | | 2005 |
| Kej Investment AS | Real estate | 2017 |
| Kejoh Invest AS | | 2013 |
| Kekka AS | Wholesale & retail | 2014 |
| Kel-Berg Norge AS | Wholesale & retail | 2013 |
| Kel-Berg Trailers Norge AS | Wholesale & retail | 2025 |
| Kela AS | Manufacturing | 2005 |
| Kela Holding AS | | 2024 |
| Kelci Invest AS | Real estate | 2016 |
| Kelda AS | Professional & scientific | 1986 |
| Kelda Holding AS | Wholesale & retail | 2005 |
| Keller AS | Information & communication | 2025 |
| Keller Geoteknikk AS | Construction | 2019 |
| Keller Grundläggning AB | Construction | 1995 |
| Kellogg Brown & Root (Norway) AS | Mining & quarrying | 2015 |
| Kelly & Martin Gale AS | | 2017 |
| Kelly Nails AS | Other services | 2024 |
| Kelno AS | Real estate | 2014 |
| Kelo AS | Real estate | 2021 |
| Keloisa Renhold AS | Health & social care | 2019 |
| Kelvin Group AS | Professional & scientific | 2010 |
| Kelvin Holdco AS | | 2026 |
| Kelvin SPV AS | | 2024 |
| Kem - Kunstnernes Eget Materialutsalg SA | Wholesale & retail | 1974 |
| Kemconsult AS | Construction | 2020 |
| Kemetyl Group AS | Real estate | 2006 |
| Kemobygg AS | Construction | 2022 |
| Kemosabe Invest AS | | 2020 |
| Kemt AS | Wholesale & retail | 2003 |
| Ken Holding AS | Financial services | 2015 |
| Ken Hygiene Systems AS | Wholesale & retail | 1973 |
| Ken Tallest AS | Wholesale & retail | 2018 |
| Ken You Believe IT Holding AS | | 2025 |
| Kenaj Eiendom AS | Real estate | 2022 |
| Kenaj Holding AS | Transport & logistics | 2022 |
| Kenco Invest AS | Real estate | 2000 |
| Kenesu AS | Information & communication | 2019 |
| Kenger AS | Professional & scientific | 2011 |
| Kenka AS | | 2019 |