| John Fadnes AS | Wholesale & retail | 1978 |
| John Ståle Eldøy AS | Wholesale & retail | 2001 |
| Joma Investment AS | | 2025 |
| Jonas Børtveit AS | Wholesale & retail | 2019 |
| Joycon Nuf | Professional & scientific | 2009 |
| JS Bygg Holding AS | Construction | 2023 |
| JS Taksering AS | Real estate | 2016 |
| Judsam Holding AS | Professional & scientific | 2022 |
| Juvele Holding AS | Professional & scientific | 2021 |
| JVT Holding AS | | 2024 |
| Jørgen Hammersland AS | Financial services | 2012 |
| Jøto Holding AS | | 2025 |
| K Eld AS | Financial services | 2018 |
| K Lindeflaten Holding AS | | 2025 |
| K Vikane Holding AS | Manufacturing | 2022 |
| Ka Eiendomsinvest AS | Real estate | 2017 |
| Ka Finans AS | Real estate | 2014 |
| KAF1 AS | Real estate | 2022 |
| Kaibakken Holding AS | Real estate | 1986 |
| Kaien Eiendom AS | Real estate | 2004 |
| Kaisvingen Kafé & Catering AS | Hospitality | 2019 |
| Kalo Holding AS | Real estate | 2013 |
| Kamy AS | Real estate | 2006 |
| Kariplasset Invest AS | Professional & scientific | 2008 |
| Kattnakken AS | Professional & scientific | 2013 |
| Kbe Invest AS | | 2025 |
| Keiser Restaurant AS | Hospitality | 2013 |
| Kjeka Holding AS | | 2022 |
| Kjeldo AS | Real estate | 2013 |
| Kjell Fylkesnes Holding AS | Professional & scientific | 2018 |
| Kjøkkenassistanse AS | Other services | 2025 |
| Kjøtteinsvegen 72 AS | Real estate | 2013 |
| Kleivo Holding AS | Real estate | 2007 |
| Klingsheim Eiendom AS | Real estate | 1974 |
| Klippen Invest AS | | 2007 |
| Klippeverket AS | Other services | 2025 |
| Knatten Eiendom Stord AS | Real estate | 2007 |
| Kndho AS | | 2025 |
| Knut Kise AS | Professional & scientific | 1995 |
| Ko Finans AS | Construction | 2008 |
| Koløyholmen AS | Real estate | 2006 |
| Komplett Bil Holding AS | | 2017 |
| Kontado AS | Professional & scientific | 2010 |
| Kontur Bygg AS | Real estate | 2007 |
| Kontur Invest AS | | 2025 |
| Kontur Modul AS | Real estate | 2022 |
| Korlevoll Invest AS | | 2026 |
| KR Partner AS | | 2025 |
| Kr-Mh AS | Health & social care | 2024 |
| Kragerø-Smolt AS | | 2021 |
| Kringla Heimsins AS | | 2020 |
| Kristtorn Holding AS | Real estate | 2019 |
| Kro Partner AS | Hospitality | 1996 |
| Krohnviken Næring AS | Real estate | 2014 |
| Krækjen AS | Real estate | 2023 |
| KTW Holding AS | | 2018 |
| Kulingen AS | | 2025 |
| Kulingen Holding AS | | 2025 |
| Kung Kung Thai Takeaway AS | Hospitality | 2024 |
| Kunstark AS | Wholesale & retail | 2021 |
| Kurs Akademiet Ans | Education | 2000 |
| Kurtala Green Ammonia AS | Manufacturing | 2024 |
| Kvikanes AS | | 2020 |
| Kårevik Utvikling AS | Real estate | 2020 |
| Kåreviksmarka Fus Barnehage AS | Education | 2018 |
| L&L Eiendom AS | Real estate | 2012 |
| L. K. Eskeland AS | Financial services | 2005 |
| La Det Skje AS | Construction | 2026 |
| Labro AS | Real estate | 1984 |
| Laibri Spratt & Tvedten Ans | | 1986 |
| Lakalyr AS | Real estate | 2023 |
| Lana Invest AS | | 2018 |
| Landmark Maskin AS | Construction | 2019 |
| Landmark Utvikling AS | Professional & scientific | 2016 |
| Landre AS | Professional & scientific | 2005 |
| Landsbylegane Stord AS | Health & social care | 2001 |
| Langenuen AS | Real estate | 2024 |
| Langli Takst AS | Real estate | 2021 |
| Lap Invest AS | | 2019 |
| Laristel AS | Real estate | 2006 |
| Lauvdalen Invest AS | Professional & scientific | 2005 |
| Le Bes Da | Real estate | 1994 |
| Lean Completion AS | Professional & scientific | 2025 |
| Lechri Invest AS | | 2018 |
| Leif Jakob Sydnes AS | Professional & scientific | 2020 |
| Leif T Nilsen AS | Real estate | 1993 |
| Leikekista AS | Arts & recreation | 2025 |
| Leirvik AS | Manufacturing | 2001 |
| Leirvik Eiendom AS | Real estate | 2013 |
| Leirvik Eiendom Stord AS | Administrative & support | 2023 |
| Leirvik Elektro AS | Construction | 2007 |
| Leirvik Energi Stasjon AS | Wholesale & retail | 2021 |
| Leirvik Engineering AS | Professional & scientific | 2023 |
| Leirvik Fengsel Eiendom AS | Real estate | 2021 |
| Leirvik Group AS | Real estate | 2018 |
| Leirvik Group II AS | Administrative & support | 2023 |
| Leirvik Helse AS | Real estate | 2005 |
| Leirvik Holdco AS | Manufacturing | 2007 |
| Leirvik Internasjonal Mat Butikk AS | Wholesale & retail | 2020 |
| Leirvik Kebab AS | Hospitality | 2022 |