| Je Eiendom AS | Wholesale & retail | 2015 |
| Jeas Holding AS | Wholesale & retail | 2019 |
| Jelsapresten Holding AS | Administrative & support | 2021 |
| Jens Bjelland AS | Wholesale & retail | 1994 |
| JH Holding AS | | 2005 |
| JLV Holding AS | Real estate | 2010 |
| JNS Holding AS | Financial services | 2009 |
| Jobb for Livet AS | Health & social care | 2019 |
| Jonny Skår Holding AS | Other services | 2007 |
| Joreka Management AS | Professional & scientific | 2013 |
| Jorpeland Dagligvare AS | Wholesale & retail | 2025 |
| JVK Consulting AS | Professional & scientific | 2025 |
| Jørpeland Bilverksted AS | Other services | 1989 |
| Jørpeland Boligutvikling AS | Real estate | 2008 |
| Jørpeland Eiendomsutvikling AS | Real estate | 2004 |
| Jørpeland Elektrosenter AS | Wholesale & retail | 2012 |
| Jørpeland Handelsforening AS | Professional & scientific | 1993 |
| Jørpeland Invest AS | Real estate | 2004 |
| Jøssang Invest AS | Financial services | 2015 |
| Jøssangvegen 11 AS | Real estate | 1997 |
| Jøssangvegen 12 AS | Real estate | 1986 |
| Jørpeland Servicenter A/S | Other services | 1988 |
| Kalviknes Invest AS | | 2018 |
| Kasj Holding AS | Wholesale & retail | 2011 |
| Kebab House Jørpeland AS | Hospitality | 2019 |
| Kebabluxe AS | Hospitality | 2024 |
| Keko AS | Wholesale & retail | 2001 |
| Kentholding AS | | 2022 |
| Kerr Energy AS | Real estate | 2005 |
| Kildal AS | Professional & scientific | 2017 |
| Kivtronic AS | | 2007 |
| Kjelli Sørensen Transport AS | Transport & logistics | 2025 |
| Kjøkkenbordet Ans | Arts & recreation | 2022 |
| Kleppa Eiendom AS | Real estate | 2015 |
| Klinikk+ AS | Health & social care | 2008 |
| Klippen Eiendomsselskap AS | Real estate | 2005 |
| KM Tech AS | Professional & scientific | 2024 |
| KMB Holding AS | Real estate | 2021 |
| Kmnor AS | Mining & quarrying | 2017 |
| KN Investering AS | Real estate | 2021 |
| KNS Handel AS | Real estate | 2006 |
| Kokaas Holding AS | Real estate | 1994 |
| Komp AS | Construction | 2020 |
| Komplett Bygg Eiendom AS | Real estate | 2022 |
| Komplett Bygg Strand AS | Construction | 2019 |
| Konditor Rød Da | Wholesale & retail | 2006 |
| Kraftbo AS | | 2019 |
| Kraftstasjonen AS | Real estate | 2002 |
| Kristen Friskole Klippen AS | Education | 2013 |
| Kristensen Holding AS | Hospitality | 2018 |
| Kvalvåg Service AS | Construction | 2025 |
| Kvarts Consulting AS | Information & communication | 2021 |
| Kvatho Holding AS | Construction | 2025 |
| Labrio AS | Professional & scientific | 2023 |
| Langeland Modell AS | Manufacturing | 1995 |
| Lauvsnes Invest AS | Financial services | 2018 |
| Lava Eiendom AS | Real estate | 2010 |
| Lax Holding AS | | 2021 |
| LBJ AS | | 2019 |
| Learnit AS | Manufacturing | 2020 |
| Lege Saima AS | Health & social care | 2021 |
| Levik Holding AS | Real estate | 2010 |
| Limpidius AS | Professional & scientific | 2023 |
| Litt Av Alt AS | Professional & scientific | 2025 |
| LKB Holding AS | | 2024 |
| Lokabrenna AS | | 2020 |
| Lysefjord Gardsmat AS | Manufacturing | 2025 |
| Lysefjorden Panorama AS | Real estate | 2010 |
| Lysefjorden Sjokolade Holding AS | Manufacturing | 2016 |
| Lysefjorden Sjokolade Produksjon AS | Manufacturing | 2016 |
| Lysefjordsenteret AS | Hospitality | 1997 |
| Løvås & Eie Invest AS | | 2024 |
| Makefile Holding AS | | 2026 |
| Manin AS | | 2023 |
| Manin Holding AS | | 2025 |
| Marja AS | | 2023 |
| Mark Holding AS | Financial services | 2010 |
| Marthel AS | Information & communication | 2018 |
| Marthel-O-Mat AS | Wholesale & retail | 2024 |
| Martin Helmikstøl AS | Arts & recreation | 2026 |
| Maxelectronic AS | Manufacturing | 2017 |
| Meiran AS | Real estate | 2021 |
| Mekama Invest AS | | 2025 |
| Meriam Invest AS | Real estate | 2005 |
| Met.Nyg Invest AS | Wholesale & retail | 2021 |
| MF Design AS | Professional & scientific | 2019 |
| MH Frisør AS | Other services | 2025 |
| Midtbø Holding AS | | 2025 |
| Minty AS | Real estate | 2015 |
| Mlae Consulting AS | Professional & scientific | 2012 |
| Mobi Snack Bar Da | Hospitality | 1989 |
| MOBI1 AS | Wholesale & retail | 2019 |
| Moks Invest AS | Real estate | 2012 |
| Moks Tomter AS | Real estate | 2012 |
| Motehuset Byberg AS | Wholesale & retail | 1986 |
| MT Grøtnes NR AS | Real estate | 2013 |
| Multicreative AS | Arts & recreation | 2023 |
| Musicwave AS | Information & communication | 2026 |
| Myrvold Procurement Consulting AS | Professional & scientific | 2013 |
| Mytisk AS | Wholesale & retail | 2026 |