| Kort & Godt Hobby AS | Wholesale & retail | 2010 |
| Kosmetisk Sykepleier Yvonne Thunem AS | Health & social care | 2015 |
| Kovalenka Invest AS | Manufacturing | 2021 |
| KR. K Hansson AS | Real estate | 1983 |
| Krabbavik AS | Real estate | 2018 |
| Kraes Norge AS | Wholesale & retail | 2026 |
| Kraft Bank ASA | Financial services | 2016 |
| Kraft Daily AS | Wholesale & retail | 2026 |
| Kraft Finans AS | Financial services | 2001 |
| Kraft Finans Prosjekt 25 AS | | 2023 |
| Kraft Finans Prosjekt 28 AS | | 2024 |
| Kraft Finans Prosjekt 29 AS | | 2024 |
| Kraft Finans Prosjekt 31 AS | | 2025 |
| Kraft Finans Prosjekt 32 AS | | 2025 |
| Kraft Finans Prosjekt 33 AS | | 2025 |
| Kraft Forsikringsmegling AS | Financial services | 2012 |
| Kraftfullt AS | Hospitality | 2016 |
| Kraftkode AS | Information & communication | 2024 |
| Kraftspire AS | Financial services | 2016 |
| Kraftverksdrift AS | Professional & scientific | 2025 |
| Kraftvirket AS | Professional & scientific | 2025 |
| Kragis AS | Administrative & support | 2025 |
| Kreaktiv Sandnes AS | Wholesale & retail | 1984 |
| Kreatel AS | Construction | 2007 |
| Kreativ Barnehage AS | Education | 2022 |
| Kreativ Barnehage Bogafjell AS | Education | 2022 |
| Kreativ Barnehage Hove AS | Education | 2022 |
| Kreativ Investering AS | Real estate | 1989 |
| Kregen Holding AS | Professional & scientific | 2017 |
| Krelto AS | Financial services | 2005 |
| Krinek AS | Wholesale & retail | 2018 |
| Kriskoholding AS | | 2024 |
| Krister Landa AS | Wholesale & retail | 2023 |
| Kristina Marie Kjønnås AS | Professional & scientific | 2020 |
| Kristjan Lura Mur & Flis AS | Construction | 2024 |
| Krogedal & Thingbø AS | Other services | 1986 |
| Krogedal Begravelsesbyrå AS | | 2025 |
| Krogedal Struts Da | Agriculture & fishing | 1998 |
| Krogis Invest AS | Professional & scientific | 2017 |
| Kronen Facility Management AS | Administrative & support | 1997 |
| Kronen Gaard AS | Hospitality | 1986 |
| Kronengruppen AS | Hospitality | 2005 |
| KRS Finans AS | | 2025 |
| Kruger Brendt AS | Hospitality | 2024 |
| Krystallveien 8 AS | | 2018 |
| KSD Consulting AS | Professional & scientific | 2019 |
| KSH Invest AS | Wholesale & retail | 2005 |
| KSH Investering AS | | 2022 |
| KSL Holding AS | | 2005 |
| Ksma AS | Financial services | 2020 |
| KSN Investering AS | | 2014 |
| KT Boligbygg AS | Construction | 2014 |
| Ktrones Invest AS | | 2019 |
| Kubisme AS | Information & communication | 2023 |
| Kulturbørsen AS | Information & communication | 2000 |
| Kulturhuset Eiendom AS | Real estate | 2004 |
| Kulturhuset Randaberg AS | Real estate | 2023 |
| Kupp AS | | 2021 |
| Kurdisk Kultursenter | Other services | 2013 |
| Kvadnor AS | Hospitality | 2019 |
| Kvadrat Blomster AS | Wholesale & retail | 2018 |
| Kvadrat Optikk AS | Wholesale & retail | 2010 |
| Kvadrat Specsavers AS | Wholesale & retail | 2022 |
| Kvalen Holding AS | Financial services | 2005 |
| Kvalheim/Maaseide AS | Professional & scientific | 2009 |
| Kvaløy AS | | 2023 |
| Kvam Invest AS | Wholesale & retail | 2024 |
| Kvarme Kapital AS | | 2025 |
| Kvart Bygg AS | Real estate | 2009 |
| Kvelluren AS | Real estate | 1993 |
| Kverneland Aqua AS | Manufacturing | 2000 |
| Kverneland Bil AS | Other services | 1996 |
| Kverneland Bil Bilutleie AS | Administrative & support | 1998 |
| Kverneland Bil Vest AS | Other services | 1995 |
| Kverneland Industrier AS | Professional & scientific | 2011 |
| Kvernelandsveien 56 AS | Real estate | 2023 |
| Kvernevikveien 344 AS | Real estate | 2024 |
| Kvia Investering AS | Real estate | 2016 |
| Kvilhaug Invest AS | Financial services | 2005 |
| Kvint AS | Professional & scientific | 2001 |
| Kvint Invest AS | Manufacturing | 2005 |
| Kvitsøy Media AS | Information & communication | 2023 |
| Kvitsøy Rekruttering AS | Administrative & support | 2021 |
| KVS92 Holding AS | | 2024 |
| KVT System AS | Wholesale & retail | 2023 |
| Kvål Auto AS | Other services | 2005 |
| Kvål Næringssenter AS | Real estate | 2004 |
| Kvålkroken 20 AS | Real estate | 2019 |
| Kvålkroken 38 AS | Real estate | 2020 |
| Kvålkroken 42 AS | Real estate | 2020 |
| Kvålkroken 6 AS | Real estate | 2019 |
| Kvålkroken AS | Wholesale & retail | 2008 |
| Kvålkroken Eiendom AS | Real estate | 2010 |
| Kvålveien AS | Real estate | 2019 |
| Kybernetikk AS | Professional & scientific | 2022 |
| Kydland Invest AS | Information & communication | 2024 |
| Kysten Formidling AS | | 2025 |
| Kästel Holding AS | | 2020 |
| Kåfjordnes AS | Real estate | 2025 |
| Kåre K Lode Transport AS | Transport & logistics | 1981 |