| Huco AS | | 2010 |
| Hundepappa AS | Wholesale & retail | 2025 |
| Husby & Hauglid Holding AS | Health & social care | 2019 |
| Huscompaniet AS | Real estate | 2021 |
| Huscompaniet Utvikling AS | Real estate | 2022 |
| Hveem Consulting AS | Education | 1998 |
| Ih Consult AS | Professional & scientific | 2023 |
| Innotoolz AS | Professional & scientific | 2023 |
| Innovano AS | Construction | 2019 |
| Innsikt AS | Professional & scientific | 2018 |
| Inspektion-Tjenester AS | Professional & scientific | 2021 |
| Intergas AS | Construction | 2002 |
| Intergas Holding AS | Construction | 2005 |
| Intergas Solutions AS | Manufacturing | 2014 |
| Itekno Management AS | Financial services | 1998 |
| J. Lundberg Eiendom AS | Real estate | 2021 |
| Jacobsen & Christensen Eiendom AS | Real estate | 2024 |
| Jacobsen Bygg AS | Professional & scientific | 2021 |
| Janet AS | Wholesale & retail | 2006 |
| Jarle Sivertsen AS | | 2025 |
| Jbinvest AS | | 2025 |
| Jf-Invest AS | Professional & scientific | 2011 |
| Joas Eiendom AS | Real estate | 1998 |
| Johan Andersen Holding AS | Real estate | 2016 |
| Jol Holding AS | Financial services | 2014 |
| JPR Holding AS | | 2025 |
| Junge & Co AS | Real estate | 1990 |
| Kal AS | Wholesale & retail | 2012 |
| Kari-Anne Røisland Consulting AS | Professional & scientific | 2024 |
| Karo Og Jossi AS | Wholesale & retail | 2020 |
| KAS25 AS | Professional & scientific | 1999 |
| Kastalia Investering AS | Transport & logistics | 1966 |
| Ki-Holding AS | Real estate | 2008 |
| Kjell Macdonald AS | Hospitality | 1994 |
| Kjellmann Holding AS | Financial services | 2005 |
| Klausen Multiservice AS | Construction | 2024 |
| Klima-Sør AS | Construction | 1990 |
| Klinikk Sør AS | Health & social care | 2024 |
| Kombikrav AS | Manufacturing | 2023 |
| Konsulatet AS | Real estate | 2018 |
| KPL Holding AS | Hospitality | 2008 |
| Krabbeteina AS | Real estate | 2024 |
| Kragerø Naturstein AS | Mining & quarrying | 2005 |
| Kragsgaten 10 AS | Real estate | 1998 |
| Krana Ski & Kajakk Nuf | Education | 2008 |
| Kranveien 55 AS | Real estate | 2020 |
| Kranveien Eiendom AS | Real estate | 2003 |
| Kranveien Holding AS | Wholesale & retail | 1995 |
| Kreppa AS | | 2026 |
| Kristiansand Engineering AS | Construction | 2016 |
| Krokstangen Holding AS | Real estate | 2021 |
| KSL Finance AS | | 2022 |
| Kvernvik Bruk Pakningsfabrikk AS | Manufacturing | 1988 |
| Kveu AS | Real estate | 2021 |
| L Knudsen AS | Wholesale & retail | 1951 |
| L'Orange AS | Construction | 2004 |
| L'Orange Eiendom AS | Real estate | 2016 |
| Langesand AS | Real estate | 2006 |
| Langesand Digital Media Group AS | Real estate | 2016 |
| Langesand Investment Partners AS | Real estate | 2021 |
| Langseth Invest AS | Professional & scientific | 2015 |
| Leadership by Heart AS | Education | 2026 |
| Lederundervisning AS | Professional & scientific | 2016 |
| Ledlys AS | Wholesale & retail | 2014 |
| Lege Niclas Halvorsen AS | Health & social care | 2020 |
| Lege Tilstede AS | Health & social care | 2024 |
| Lene Og Beathe Klær Ans | Wholesale & retail | 1999 |
| Lille Hvite Interiør AS | Wholesale & retail | 1994 |
| Limama Beauty & Soapery AS | Other services | 2020 |
| Lindstøl Skip AS | Professional & scientific | 2002 |
| Lindstøl Verven A/S | Real estate | 1989 |
| Lindstøls Bokhandel AS | Wholesale & retail | 1994 |
| Littkritikk AS | Arts & recreation | 2013 |
| LN Yachts AS | Manufacturing | 2012 |
| Logoped Kristin Ertsås AS | Health & social care | 2016 |
| Lokander Eiendom AS | Agriculture & fishing | 1981 |
| Loopbit AS | | 2025 |
| Luftslottet Eiendom AS | Hospitality | 2012 |
| Løkteskjær Brygge AS | Real estate | 2019 |
| M & M Investering AS | | 2024 |
| M.Sivertsen Bygg AS | Construction | 2004 |
| M2 Leie AS | Real estate | 2006 |
| Mabele AS | Wholesale & retail | 2026 |
| Macdonald Holding AS | | 2019 |
| Macqueen Eiendom AS | Real estate | 2018 |
| Mademoiselle AS | Wholesale & retail | 2015 |
| Marine Drift AS | Manufacturing | 2014 |
| Meglergården Risør AS | Real estate | 1999 |
| Meglerhuset Invest AS | Real estate | 2005 |
| Melkeveien 9 AS | Real estate | 2008 |
| Mesel Eiendom AS | Real estate | 2003 |
| MHR AS | Professional & scientific | 2021 |
| Mirium AS | Professional & scientific | 2017 |
| Moe Dalen Eiendom AS | Real estate | 2007 |
| Moen Autosenter AS | Other services | 2008 |
| Moen Invest AS | Real estate | 2005 |
| Moen Trebåtbyggeri AS | Manufacturing | 2005 |
| Montasjeservice Sør AS | Construction | 2022 |
| MS Huldra AS | Transport & logistics | 1996 |
| Msdl AS | Real estate | 2022 |