| 4C Investment AS | | 2012 |
| 7START Ltd Nuf | Information & communication | 2011 |
| A P Bygg AS | Real estate | 1988 |
| A.Tønnessen AS | Construction | 2023 |
| A1-INVEST AS | Financial services | 2005 |
| Aa Bygg AS | Real estate | 2014 |
| Aas Og Høiland AS | Construction | 1986 |
| Aas Utvikling AS | Real estate | 2020 |
| Aas-Invest AS | Financial services | 2005 |
| Abe Holding AS | Construction | 2008 |
| Abrahamsen Bygg Og Vedlikehold AS | Construction | 2012 |
| Advokatfirmaet Karlsen AS | Professional & scientific | 2016 |
| Agde Arealplan AS | Professional & scientific | 2025 |
| Agde Arkitektur AS | Professional & scientific | 2020 |
| Agder Maskinfag AS | Administrative & support | 2020 |
| Agder Mur&Bygg Ans | Construction | 2007 |
| Agder Næringspark AS | Real estate | 2003 |
| Agder Service & Montasje AS | Water & waste | 2014 |
| Agder Va AS | Professional & scientific | 2025 |
| Agder Veitransport AS | Transport & logistics | 1985 |
| Agnefestveien 1 AS | Real estate | 2010 |
| Agnefestveien 4 AS | Real estate | 1984 |
| Agnefestveien AS | Construction | 2008 |
| Ah-Consulting AS | Professional & scientific | 2011 |
| Airsuspension AS | Wholesale & retail | 2016 |
| Akersmyr Næringspark AS | Real estate | 2023 |
| Alleen 1 AS | Real estate | 2006 |
| Alleen 10 AS | Real estate | 1923 |
| Alleen Auto Eiendom AS | Real estate | 1986 |
| Alleen Eiendom AS | Real estate | 1969 |
| Alleen Gym Ans O Torgersen & Co | | 1986 |
| Alleen Kiosk 2 AS | Wholesale & retail | 2026 |
| Alleen Kiosk AS | Wholesale & retail | 2011 |
| Alliance Lyngdal AS | Wholesale & retail | 2014 |
| Alloc AS | Manufacturing | 1986 |
| Amento AS | Health & social care | 2021 |
| Amento Holding AS | Health & social care | 1986 |
| Amento Kompetanse AS | Health & social care | 2021 |
| Amento Service AS | Other services | 2021 |
| Anders Sandal Eiendom AS | Real estate | 2000 |
| Anero AS | Professional & scientific | 2021 |
| Ans Lyngdal Bil & Maskinservice Barbala & Kristiansen. | Wholesale & retail | 1985 |
| Ans Oves MC Shop Juliussen Og Refsnes | Wholesale & retail | 1987 |
| ANS Orkideen | Wholesale & retail | 1988 |
| ANS PATHETIQUE Lyngdal | | 1988 |
| Anton Reime Eiendom AS | Real estate | 1998 |
| Apk Motor Og DPF Regenerering AS | Other services | 2017 |
| Apotekgruppen Trygg AS | Wholesale & retail | 2023 |
| Armo Holding AS | Professional & scientific | 2015 |
| Arnes Fisk & Skalldyr AS | Wholesale & retail | 1991 |
| AS Røyseland Maskin | Construction | 2015 |
| Astrasoft AS | Information & communication | 1995 |
| Atomics AS | Professional & scientific | 2026 |
| Aubor AS | Construction | 2018 |
| Augland Drift AS | Manufacturing | 2007 |
| Auglandsgården Da | Real estate | 1995 |
| Aunevik Holding AS | | 2022 |
| Auto Classic Garage AS | Wholesale & retail | 2018 |
| Autoregnskap AS | Wholesale & retail | 2001 |
| Autovernmontasje AS | Construction | 1991 |
| Avsnitt AS | Real estate | 2025 |
| Awn Holding AS | | 2023 |
| B.L Eiendom Da | Real estate | 2006 |
| Bale Holding AS | | 2025 |
| Ballestad Maskin AS | Construction | 2014 |
| Batteriveien Eiendom AS | Financial services | 2005 |
| Bekkevik Eiendom AS | Real estate | 2024 |
| Belland Invest AS | Construction | 2019 |
| Belland Naturstein AS | Construction | 2021 |
| Benefit Norway AS | Professional & scientific | 2016 |
| Bentz AS | | 2020 |
| Bentz Trafikkskole AS | Education | 2006 |
| Berge Parken AS | | 2014 |
| Bernt Opsal AS | | 2024 |
| Berntsen Drift AS | Administrative & support | 2023 |
| Berntsen JR AS | Administrative & support | 2023 |
| Bervåg Panorama AS | Real estate | 2026 |
| Bevar Meg Vel AS | Other services | 2012 |
| Bfadvisory AS | Information & communication | 2025 |
| BHT Sør SA | Health & social care | 1995 |
| BHT Sørvest SA | Health & social care | 2022 |
| Bilbo Utvikling AS | Real estate | 2005 |
| Bilemi AS | Wholesale & retail | 2020 |
| Bilgruppen Sør AS | Other services | 2022 |
| Bilgruppen Sør Eiendom AS | Real estate | 2015 |
| Bims Lyngdal AS | Wholesale & retail | 2005 |
| Birkeland Bruk Holding AS | Real estate | 2003 |
| Birkeland Bruk Trelast AS | Manufacturing | 2003 |
| Birkelandmaskin AS | Construction | 2020 |
| Blikkenslager Leif Bjørnestad AS | Construction | 2013 |
| Bliss Holding AS | Other services | 2019 |
| Blomsterklem AS | Arts & recreation | 2025 |
| BMB Invest AS | Financial services | 2005 |
| Boklykke AS | Wholesale & retail | 2017 |
| Bondens Marked Agder SA | Other services | 2004 |
| Brand Equitor AS | Professional & scientific | 2018 |
| Brisen Eiendom AS | Real estate | 2005 |
| Broderistua AS | Wholesale & retail | 2003 |
| Brokke Alpint AS | | 2005 |
| Brødrene Salamonsen AS | Mining & quarrying | 2005 |