| K Invest IV AS | Financial services | 2017 |
| K Invest V AS | Wholesale & retail | 2017 |
| K Investering 3 AS | Real estate | 2017 |
| K Investering III AS | Real estate | 2015 |
| K Investering IV AS | Financial services | 2015 |
| K Investering V AS | Wholesale & retail | 2015 |
| K M Jørgensen Totalservice AS | Manufacturing | 2012 |
| K. Munkejord Invest AS | Other services | 2023 |
| Kapilar AS | Professional & scientific | 2013 |
| Karmtor AS | | 2013 |
| Karmøy Auto AS | Wholesale & retail | 2022 |
| Karmøy Bilservice AS | Other services | 1995 |
| Karmøy Blomster Ans | Wholesale & retail | 1998 |
| Karmøy Fugetetting AS | Construction | 2014 |
| Karmøy Holding AS | Real estate | 2005 |
| Karmøy Invest AS | Real estate | 2005 |
| Karmøy Klem & Press AS | Agriculture & fishing | 2026 |
| Karmøy Lydstudio Ans | Arts & recreation | 1996 |
| Karmøy Vest Eiendom AS | Real estate | 1999 |
| Karmøykrabben AS | Hospitality | 2026 |
| Karten Skog Og Anlegg AS | Agriculture & fishing | 2020 |
| Katra Service AS | | 2026 |
| Kaute AS | | 2020 |
| Kenneth Walland AS | Financial services | 2013 |
| Khaa Invest AS | Real estate | 2005 |
| Kirketunet Barnehage AS | Education | 2020 |
| Kirketunet Eiendom AS | Real estate | 2025 |
| Kjartan Langåker Holding AS | | 2026 |
| Kjell Jakobsen Holding AS | | 2022 |
| Kjøkkendrift No 1 Åkrahamn AS | Wholesale & retail | 2017 |
| KK Invest 4 AS | | 2020 |
| Kløver-Invest AS | Real estate | 2006 |
| KMV Holding AS | | 2019 |
| Knutsen & Vikra Eiendom AS | Real estate | 2000 |
| Knutsen Agentur Holding AS | Wholesale & retail | 2004 |
| Kolles Tilhenger Og Plenklipperservice AS | Manufacturing | 2025 |
| Kro Frøyland Holding AS | | 2026 |
| Kvalvåg All Service AS | Construction | 2021 |
| Kvitingskjær AS | Administrative & support | 2020 |
| L Alvseike AS | Professional & scientific | 2024 |
| L.G-Eiendom AS | Financial services | 2018 |
| La Kapital AS | | 2020 |
| Langåker Stillas Utleie Ans | Administrative & support | 1996 |
| Lekeplaneten Åkrehamn AS | Wholesale & retail | 2003 |
| Lentos AS | Real estate | 2017 |
| Likt & Ulikt Ans | Wholesale & retail | 1994 |
| Linda AS | | 2020 |
| Livskompetanse AS | Health & social care | 2024 |
| Livsøkonomi AS | Other services | 2025 |
| LMK Eiendom Da | Real estate | 2006 |
| LMK Energi AS | Construction | 2011 |
| Londaren AS | | 2025 |
| Luft & Miljøteknikk Karmøy AS | Construction | 2002 |
| Lund Oppmåling AS | Professional & scientific | 2024 |
| Mangor Aanensen Consulting AS | Professional & scientific | 2022 |
| Mannes Marine Service AS | Manufacturing | 2019 |
| Marøy AS | Financial services | 2012 |
| Maskinforhandleren AS | Wholesale & retail | 2025 |
| May Iren Reinlund Holding AS | | 2020 |
| Mbi Marine AS | Administrative & support | 2021 |
| MC Båt & Fritid AS | Wholesale & retail | 2022 |
| Medhaug Investment AS | | 2024 |
| Medhaug Kinareiser AS | Administrative & support | 2018 |
| Medieselskapet Karmøynytt AS | Information & communication | 2010 |
| Mehs Eiendom AS | Real estate | 2025 |
| Mehs Holding AS | Administrative & support | 2008 |
| Membran Teknologi AS | Manufacturing | 1998 |
| Meps Eiendom AS | Real estate | 2011 |
| MKN AS | | 2020 |
| MN Kurdem AS | Hospitality | 2016 |
| Mobildeksel AS | Wholesale & retail | 2017 |
| Molinergutt AS | Agriculture & fishing | 2001 |
| Mortholmen Drift AS | Arts & recreation | 2015 |
| Motorhead Auto AS | Wholesale & retail | 2024 |
| Mots Drift AS | Transport & logistics | 2025 |
| Myrdalen AS | Professional & scientific | 2005 |
| Myte Interactive AS | Information & communication | 2024 |
| Møller Gym AS | Arts & recreation | 2022 |
| Naustaberg AS | Real estate | 2018 |
| Nes Maritime AS | Professional & scientific | 2013 |
| Neslin Holding AS | Real estate | 2008 |
| Neven Holding AS | | 2026 |
| Nissedilla AS | Arts & recreation | 2017 |
| Nop Eiendom AS | Wholesale & retail | 2006 |
| Nord Rogaland Lyd Ans | Wholesale & retail | 1994 |
| Norges Gullreserve AS | Wholesale & retail | 2020 |
| Norman Invest AS | | 2019 |
| Norsafe AS | Professional & scientific | 1969 |
| North by Ohm AS | Wholesale & retail | 2017 |
| Norwest Ship Holding AS | Transport & logistics | 2024 |
| Noy AS | | 2020 |
| NPS Holding AS | | 2024 |
| Nyco AS | Financial services | 2005 |
| Nyfjord AS | Transport & logistics | 2005 |
| Nyvingen AS | Financial services | 2013 |
| Obs Eiendom AS | Real estate | 2025 |
| Odd Kvalevåg AS | Financial services | 2005 |
| Off AS | Real estate | 2004 |
| Off Eiendom AS | Real estate | 2016 |
| Off Invest AS | Information & communication | 2016 |