| Brødrene Staddeland AS | Administrative & support | 2013 |
| Bulæg Holding AS | Real estate | 2011 |
| Butterflies AS | Other services | 2024 |
| Bygg Teknikk Eiendom AS | Real estate | 2011 |
| Bygg Teknikk Lyngdal AS | Construction | 2008 |
| BYGG1 Lyngdal AS | Construction | 2008 |
| Byggehjelpa AS | Professional & scientific | 2022 |
| Byggmester Arne Pettersen AS | Construction | 1992 |
| Byggmester Espeland AS | Construction | 2019 |
| Byggmester Fredbo AS | Construction | 2018 |
| Byggmester Hellås AS | Construction | 2022 |
| Byggmester Odd Kjell Skjørli AS | Construction | 2013 |
| Byggmester Tom Ariansen AS | Construction | 2005 |
| Byggmester Tore Berge AS | Construction | 2000 |
| Byggsøksør AS | Professional & scientific | 2023 |
| Byggutvikling Sør AS | Real estate | 2007 |
| Cadens AS | Professional & scientific | 2010 |
| Calculum AS | Information & communication | 2022 |
| Camp Lyngdal AS | Hospitality | 1990 |
| Card Factory AS | Wholesale & retail | 2026 |
| CCS AS | Other services | 2019 |
| Christian H. Juul Nuf | Administrative & support | 2005 |
| Cityscape Properties AS | Real estate | 2025 |
| CN Entreprenør AS | Construction | 2020 |
| Cne Holding AS | | 2025 |
| Coast Clothing AS | Wholesale & retail | 2016 |
| Cora AS | Real estate | 1976 |
| Cora Invest AS | Real estate | 2013 |
| CT Utleie AS | Wholesale & retail | 2021 |
| CTK Invest AS | Professional & scientific | 2015 |
| CTL Holding AS | Real estate | 2021 |
| CTR Invest AS | Real estate | 2016 |
| CTR Sun AS | Real estate | 2019 |
| Dag Røsthe AS | Wholesale & retail | 1987 |
| Dibec AS | Transport & logistics | 2010 |
| DMG Holding AS | | 2024 |
| Draganesc Distribusjon AS | Transport & logistics | 2026 |
| Dragland Maskin AS | Administrative & support | 2019 |
| Drift Advokathjørnet AS | Administrative & support | 2019 |
| DSS Holding AS | | 2021 |
| E Hellestøl AS | Construction | 2018 |
| E-Pos AS | Education | 2004 |
| E2M Invest AS | | 2025 |
| Ea Utvikling AS | Real estate | 2020 |
| East and West Corporation AS | Hospitality | 2019 |
| Echopace AS | Information & communication | 2026 |
| Edda Forlag AS | Arts & recreation | 2023 |
| Efa Marked Lyngdal AS | Wholesale & retail | 2000 |
| Effein AS | | 2018 |
| Eftestøl Games AS | Information & communication | 2024 |
| Egeland Service AS | Wholesale & retail | 2016 |
| Eiendom Sør AS | Real estate | 2021 |
| Eiendom Vekst AS | Real estate | 1990 |
| Eiendomslabben AS | Real estate | 2025 |
| Eikenes Finans AS | | 1997 |
| Ek-Invest AS | Information & communication | 2018 |
| Ekos Holding AS | | 2019 |
| Eksel Services AS | Professional & scientific | 2020 |
| El-Shop Lyngdal AS | Wholesale & retail | 2016 |
| Elektro Eiendom AS | Real estate | 2000 |
| Elkjøp Stormarked Lyngdal AS | Wholesale & retail | 1993 |
| Ellas Hage AS | Wholesale & retail | 2020 |
| Elma Li AS | Wholesale & retail | 2005 |
| Elvebredden Hytteferie AS | Hospitality | 1998 |
| Elvetun Bobilpark Ans | Hospitality | 1995 |
| Emme AS | Real estate | 2004 |
| Eof Holding AS | | 2025 |
| Erik Lande Holding AS | Other services | 2011 |
| Erv Invest AS | Real estate | 2006 |
| Erv Teknikk AS | Construction | 2006 |
| Evensen Rørleggerservice AS | Construction | 2015 |
| Exakt Prosjektering AS | Professional & scientific | 2020 |
| Export-Import Elmi Da | Wholesale & retail | 2011 |
| F&F Konsern AS | Wholesale & retail | 2023 |
| Fa Betong AS | Construction | 2018 |
| Fabienne AS | Wholesale & retail | 1987 |
| Factura AS | Professional & scientific | 2004 |
| Fcks AS | | 2026 |
| Fetterantonflaks AS | Professional & scientific | 2024 |
| Fibo AS | Manufacturing | 1992 |
| Fiboveien 26 AS | Manufacturing | 2000 |
| Filadelfia Barnehage AS | Education | 2022 |
| Fjellbygg AS | Construction | 1989 |
| Fjellflex AS | Professional & scientific | 2024 |
| Fjord Homes AS | Hospitality | 2023 |
| Fjordodden AS | Real estate | 2022 |
| Flash Bilpleie Og Service AS | Professional & scientific | 2024 |
| Fleseland AS | Manufacturing | 2012 |
| Flisefrank AS | Construction | 2014 |
| Fonns AS | Professional & scientific | 2020 |
| Forvalt Norge AS | Real estate | 2015 |
| Foss Drift AS | Professional & scientific | 2017 |
| Foss Næringsutvikling AS | Professional & scientific | 2017 |
| Foss Pukkverk AS | Mining & quarrying | 2017 |
| FR Hav AS | Agriculture & fishing | 2026 |
| Frame Lab AS | Information & communication | 1995 |
| Fredheim AS | Real estate | 1987 |
| Frestad AS | Professional & scientific | 2024 |
| Frid Cosmetics AS | Wholesale & retail | 2019 |
| Frode a. Holding AS | Construction | 2018 |