| Jepsen's Betong AS | Construction | 2026 |
| JG Custom Knives AS | Manufacturing | 2020 |
| JML AS | | 2007 |
| Johan Invest AS | Real estate | 2006 |
| Johannessen Antirust AS | Other services | 2025 |
| Jordbærstrået Fam. Barnehage AS | Education | 2023 |
| Josdal Transportservice AS | Transport & logistics | 2022 |
| K. Pedersen Holding AS | | 2025 |
| Kamelon Interiør & Styling AS | Wholesale & retail | 2008 |
| Karsten Og Rune Eiendom Ans | Real estate | 1991 |
| Kasald AS | Hospitality | 2012 |
| Kastanjehagen AS | Wholesale & retail | 2022 |
| Kastanjehagen Drift AS | Wholesale & retail | 2026 |
| Kebab House Vennesla AS | Hospitality | 2020 |
| Keg Invest AS | Real estate | 2019 |
| KH -Consult AS | Real estate | 2020 |
| Kilane Eiendom AS | Real estate | 2019 |
| Kjell Kåre Homme AS | Construction | 2022 |
| KK Sauna AS | Other services | 2025 |
| Klima & Miljøteknikk AS | Administrative & support | 2019 |
| KLØVER4 AS | Construction | 2017 |
| Knobel Atkinson Tannlegesenter AS | Health & social care | 2022 |
| Knobel Eiendom AS | Real estate | 2021 |
| Knockout AS | Information & communication | 2025 |
| Kompekjøkkenet AS | Manufacturing | 2016 |
| Kontekst AS | Professional & scientific | 2025 |
| Kristen Homme AS | Construction | 2008 |
| Kristiansand Eiendom AS | Real estate | 2025 |
| Kristina Andersen AS | Arts & recreation | 2012 |
| Krogedal's AS | Health & social care | 2025 |
| Ks-Konsept AS | Professional & scientific | 2024 |
| Kv-Bygget AS | Real estate | 1995 |
| Kvamsø AS | Professional & scientific | 2013 |
| Kvarstein Drift AS | Wholesale & retail | 2008 |
| Kvarstein Gartneri AS | Real estate | 2025 |
| Kvarstein Kolonial AS | Wholesale & retail | 1999 |
| Kvarstein Økonomi AS | Professional & scientific | 2014 |
| Kyltech AS | Construction | 2026 |
| Kåbuland Og Stokkeland Elektro AS | Construction | 2006 |
| L.Aks AS | Wholesale & retail | 2024 |
| Lagerbaronen AS | Real estate | 2025 |
| Lah AS | Wholesale & retail | 2016 |
| Landsverk Capital AS | | 2023 |
| Larsen Advokatfirma AS | Professional & scientific | 2012 |
| Legendin AS | Health & social care | 2024 |
| Leidverk AS | Information & communication | 2026 |
| Leifs Mat AS | Wholesale & retail | 2025 |
| Leifs Mat AS | Wholesale & retail | 1992 |
| Leli Invest AS | | 2014 |
| Lemo 6570 Eiendom AS | Real estate | 2025 |
| Lemo 6570 Invest AS | | 2025 |
| Lesa Holding AS | Construction | 2020 |
| Lian Maskin AS | Administrative & support | 2022 |
| Libli AS | Wholesale & retail | 2025 |
| Liebermanns Bakeri & Konditori AS | Manufacturing | 1988 |
| Linde Bygg AS | Wholesale & retail | 2020 |
| Linde-Belland Invest AS | | 2025 |
| Lindekleiv Graveservice AS | Construction | 2014 |
| Lindekleiv Holding AS | Construction | 2011 |
| Logistikk Sør AS | Transport & logistics | 2013 |
| Lorentzen-Service AS | Manufacturing | 2025 |
| Lunden Regnskap AS | Professional & scientific | 1997 |
| Lundens Holding AS | Real estate | 2026 |
| Lundevegen AS | Real estate | 2023 |
| Lundeveien 40 AS | Real estate | 2017 |
| Lykkelige Hjul AS | Transport & logistics | 2025 |
| Lysglimt Vennesla AS | Education | 2015 |
| M G Holding AS | Real estate | 2005 |
| M. Finnestad Invest AS | Financial services | 2007 |
| M. H. Invest AS | Financial services | 2005 |
| M.Bredesen Invest AS | | 2022 |
| M.L Eiendom AS | Real estate | 2019 |
| M3 Prosjekt AS | Real estate | 2021 |
| Magic Store AS | Wholesale & retail | 2019 |
| Magne Haug Nano AS | | 2025 |
| Makeitup AS | Wholesale & retail | 2018 |
| Makitech AS | Wholesale & retail | 2013 |
| Malercompaniet Sør AS | Construction | 2014 |
| Malermester Bratland AS | Construction | 1997 |
| Malermester Nystøl AS | Construction | 2009 |
| Mangseth Utleiebygg Da | Real estate | 2000 |
| Many Colors AS | Wholesale & retail | 2023 |
| Mariknotten AS | Real estate | 2009 |
| Markens Blomster AS | Wholesale & retail | 2021 |
| Maskin-Sør AS | Wholesale & retail | 2024 |
| MC Teknikk AS | Other services | 2015 |
| Mcdrivenes Holding AS | Arts & recreation | 2017 |
| Medisinsk Helse & Velvære AS | Other services | 2023 |
| Meierigården Blomster Ans | Wholesale & retail | 1996 |
| Mestermal AS | Construction | 2015 |
| Mestermal Eiendom AS | Real estate | 2015 |
| Mestermal Holding AS | Construction | 2009 |
| Metropartner AS | Professional & scientific | 2000 |
| MH Interiør AS | Professional & scientific | 2022 |
| MIKKEL72 AS | Professional & scientific | 2025 |
| Million Frisør AS | Other services | 2025 |
| Mimo AS | Financial services | 2007 |
| Mindfleyer AS | | 2022 |
| MJL Holding AS | Real estate | 2011 |
| Ml-Holding AS | | 2025 |