| Jone Sandstøl AS | | 2022 |
| Jordbærpikene Madla AS | Hospitality | 2018 |
| Jovial AS | Arts & recreation | 2023 |
| Jph-Holding AS | | 2021 |
| JT Paulsen AS | Financial services | 2014 |
| JTG Holding AS | Financial services | 2005 |
| Jugozapad Invest AS | Professional & scientific | 2017 |
| Julias AS | | 2025 |
| Jurrien Invest AS | | 2026 |
| JV Develop AS | Professional & scientific | 2022 |
| Julius Johannessen & Sønner A/S | Manufacturing | 1947 |
| Jæren Dyrebutikk AS | Wholesale & retail | 2025 |
| Kad Consultants AS | Professional & scientific | 2006 |
| Kado Holding AS | Construction | 2020 |
| Kaffekammeret AS | Wholesale & retail | 2026 |
| Kalimera AS | Wholesale & retail | 2008 |
| Kalle Og Kjetils Rør AS | Construction | 2019 |
| Kamfa AS | Professional & scientific | 2020 |
| Kamsvåg Invest AS | Financial services | 1985 |
| Kari Schibevaag AS | Professional & scientific | 2012 |
| Kasema AS | Professional & scientific | 2012 |
| Kasisto AS | Professional & scientific | 2017 |
| Katona Holding AS | Financial services | 2007 |
| Kaval Invest AS | | 2025 |
| KD Flyfishing Tours AS | Administrative & support | 2022 |
| Ked Holding AS | | 2025 |
| Keem AS | Real estate | 2022 |
| Keen AS | Professional & scientific | 2015 |
| Kekeleli AS | Financial services | 2007 |
| Kemejosdal AS | Professional & scientific | 2005 |
| Kenoch AS | Professional & scientific | 2022 |
| Kestrel AS | Information & communication | 2024 |
| KG Future Holding AS | | 2023 |
| KGB Holding AS | Financial services | 2006 |
| Khøiland Invest AS | | 2024 |
| Kingmakers AS | Information & communication | 2016 |
| KIR26 AS | Real estate | 2020 |
| Kiropraktor Daniel Dyrstad AS | Health & social care | 2019 |
| Kiropraktor Pettersen AS | Health & social care | 2008 |
| KJ Investeringer AS | | 2022 |
| Kjasso Kapital AS | | 2024 |
| Kjen Holding AS | | 2023 |
| Kjøkkendrift NO.1 Madla AS | Wholesale & retail | 2009 |
| Kjølvik Eiendom Nuf | Real estate | 2011 |
| Klinikk Libra AS | Health & social care | 2014 |
| Klink Golf AS | Information & communication | 2025 |
| Klømnstein AS | | 2019 |
| KMH AS | Real estate | 2008 |
| KN Job Consulting AS | Education | 2007 |
| Koll Holding AS | | 2025 |
| Koncav AS | Professional & scientific | 2017 |
| Konsulent AS | Administrative & support | 2025 |
| Kornelius Consulting AS | Professional & scientific | 2015 |
| Krossberg Jordbruksservice Ans | Agriculture & fishing | 1987 |
| Krovik AS | Professional & scientific | 2012 |
| Kvadruppel AS | | 2021 |
| Kvalvik Invest AS | | 2021 |
| Kvartira AS | Real estate | 2025 |
| Kvassheim Elektriske AS | Construction | 1998 |
| Kvast Eiendom AS | Real estate | 2024 |
| Kverneland Eiendom AS | Real estate | 2000 |
| Kvernevik Mat AS | Wholesale & retail | 2017 |
| Kvernevik Super Pizza AS | Hospitality | 2019 |
| Kvernevikvegen 4 AS | Real estate | 2005 |
| Kvernevikveien 109 AS | Real estate | 2012 |
| Kvist Arkitektur AS | Professional & scientific | 2021 |
| Kyvik Holding AS | Real estate | 2015 |
| L-Coaching AS | Education | 2021 |
| L46 Carbon Invest AS | Professional & scientific | 2022 |
| Labes Holding AS | | 2021 |
| Lagerplass AS | Information & communication | 2026 |
| Laland Invest AS | | 2024 |
| Langsyn AS | Professional & scientific | 2020 |
| Lanne Investering AS | Manufacturing | 2014 |
| Lanne Trafo AS | Manufacturing | 2014 |
| Lars C Ingebrethsen AS | Wholesale & retail | 1940 |
| Larsen Turbuss AS | Transport & logistics | 2017 |
| Lastech AS | Professional & scientific | 2024 |
| Lauche Holding AS | | 2025 |
| Layan Style AS | Wholesale & retail | 2024 |
| Leco AS | Administrative & support | 2006 |
| Lege Gergana Sandeva AS | Health & social care | 2026 |
| Lege Kaloyan Ferev AS | Health & social care | 2025 |
| Leif Hovland AS | Hospitality | 2005 |
| Lende Bygg AS | Construction | 2008 |
| Lervigbrygga 172 AS | Real estate | 2020 |
| Liapynten AS | Professional & scientific | 2002 |
| Liapynten Invest AS | Financial services | 2016 |
| Lieinvest AS | | 2024 |
| Lilland Invest AS | Financial services | 2005 |
| Lille Eiendom AS | Real estate | 2011 |
| Lipe Invest AS | | 2005 |
| Lisema Invest AS | Professional & scientific | 2008 |
| List Rådgivning & Investering AS | Professional & scientific | 2020 |
| Liten Thue Velter Store Lass AS | | 2021 |
| Lithinon AS | Professional & scientific | 2013 |
| Litt Bedre AS | Professional & scientific | 2023 |
| Litt Igjen AS | | 2008 |
| Little China Garden Da | Hospitality | 2002 |
| Living Consult AS | | 2004 |