| 1157 Holding AS | | 2025 |
| 3-INTERIØR AS | Manufacturing | 2026 |
| A Ventilasjon AS | Construction | 2006 |
| Aarnes Invest AS | Real estate | 2019 |
| Aas Skaarup Holding AS | | 2016 |
| Aba Con AS | Real estate | 1991 |
| Aba-Tech AS | Manufacturing | 1989 |
| Abel Design Kjøkken & Garderobe AS | Construction | 2017 |
| Abrasta Eiendom AS | Real estate | 2023 |
| Advance Business Partner AS | Professional & scientific | 1997 |
| Advance Forsikring AS | Financial services | 2023 |
| Advokat Marianne Hognestad AS | Professional & scientific | 2018 |
| Aet Eiendom Risør AS | Real estate | 2010 |
| Agbo AS | | 2018 |
| Agdecon AS | Professional & scientific | 2003 |
| Agder Bygg Og Rehabilitering AS | | 2005 |
| Agder Bygginnredning AS | Construction | 2026 |
| Agder Hotell & Restaurantkjede AS | Real estate | 1993 |
| Agder Hotell Eiendom AS | Real estate | 2008 |
| Agder Industriservice AS | Manufacturing | 2012 |
| Agder Totalbygg AS | Construction | 2018 |
| Agis AS | Manufacturing | 2020 |
| Aktiv Risør AS | Arts & recreation | 2025 |
| Aktive Fredsforlag AS | Information & communication | 2015 |
| Aktive Fredsreiser Travel for Peace AS | Administrative & support | 2002 |
| Aktivtmed AS | Information & communication | 2020 |
| Akvanti AS | Information & communication | 2018 |
| Aldon Geyser Group AS | Education | 2014 |
| Alexander Wiik AS | Health & social care | 2014 |
| Alinda AS | Professional & scientific | 2005 |
| Am Andersen Eiendom AS | Real estate | 2021 |
| Amandus Barnehage SA | Education | 1990 |
| Amundsen Og Danielsen Eiendom AS | Real estate | 2014 |
| Anders Stangvik Anlegg AS | Construction | 2018 |
| Andreas Sommerfelt Holding AS | | 2025 |
| Anne Hudalen Holding AS | Administrative & support | 2005 |
| Ans Kafe Krag - Ditt Andre Hjem | Hospitality | 1988 |
| Apland Holding AS | | 2023 |
| Arendal Tannhelse AS | Health & social care | 2024 |
| Arnesen & Rhein Utvikling AS | Professional & scientific | 2025 |
| AS Havnegaten 2-4 | Real estate | 1988 |
| AS Kastalia | Financial services | 1974 |
| At Ventilasjon AS | Construction | 2025 |
| Aukland Holding AS | Health & social care | 2005 |
| Ausland Consulting AS | Professional & scientific | 2025 |
| Ausland Kapital AS | | 2026 |
| Aust Agder Blad AS | Information & communication | 1999 |
| Axelsen Holding AS | | 2026 |
| Barevents AS | Arts & recreation | 2024 |
| Barmen Bygg AS | Construction | 2012 |
| Barmen Og Danielsen Eiendom AS | Real estate | 2021 |
| Barmen Skogsveiforening | Agriculture & fishing | 1984 |
| BDD Eiendom AS | Real estate | 2014 |
| Beachbum AS | Wholesale & retail | 2021 |
| Beisland Blomster AS | Wholesale & retail | 2014 |
| Bekkegata Tun AS | Real estate | 2013 |
| Bekth Eiendom AS | Real estate | 2022 |
| Bessfield Eiendom AS | Real estate | 2017 |
| Birgitte Høgli AS | Wholesale & retail | 2025 |
| Blåvatten AS | Administrative & support | 2018 |
| Bob Carlton Nordic AS | Wholesale & retail | 2022 |
| Bordal AS | Construction | 2021 |
| Bosvik Bygginnredning AS | Construction | 2023 |
| Bosvik Gartneri AS | Agriculture & fishing | 1990 |
| Bragd Forsikring AS | Financial services | 2021 |
| Brannrådgivning Sør-Øst Nuf | Professional & scientific | 2011 |
| Bratlands Hjørne AS | Health & social care | 2020 |
| BRD. Ellefsens Eftf. AS | Other services | 2009 |
| Bryt AS | Financial services | 2005 |
| BSE21 AS | | 2025 |
| Butikkeiendom V/T AS | Real estate | 2023 |
| BUVIKA SLIPP & BÅTBYGGERI Rolf Thoresen og Terje Thoresen ANS | | 1982 |
| Buvikbakken Holding AS | Wholesale & retail | 2006 |
| Buvikveien 21 AS | Real estate | 2008 |
| Byggmester Kjetil H. Danielsen AS | Construction | 2017 |
| Byggmester Kristian Fidje AS | Construction | 2010 |
| Byggmester Sommerfelt AS | Construction | 2025 |
| Båtførerprøven VR AS | Education | 2024 |
| Café Diamant AS | Hospitality | 2015 |
| Caissa Eiendom AS | Real estate | 2026 |
| Caissa Invest AS | Real estate | 2012 |
| Caissa Konsulenttjenester AS | Professional & scientific | 2026 |
| Caroline Frantsen Invest AS | | 2023 |
| Caspersensvei Handelsområde AS | Wholesale & retail | 2012 |
| Caspersensvei Handelsområde Vest AS | Real estate | 2011 |
| Cav 51 AS | Real estate | 2018 |
| Caval Eiendom AS | Real estate | 2016 |
| Ceno Consulting Ltd Nuf | Professional & scientific | 2010 |
| Children of Mercer Da | Arts & recreation | 2023 |
| Chin Chin Stua Cafe AS | Wholesale & retail | 2017 |
| Christensen Bygg AS | Construction | 2026 |
| CJ Investment AS | | 2024 |
| CL Invest AS | Real estate | 1965 |
| Cl-Eiendom AS | | 2019 |
| CMK Invest AS | | 2020 |
| Connecticom AS | Professional & scientific | 2018 |
| Corpower Ocean Norge | Energy | 2015 |
| Cottage of Lost Play AS | Wholesale & retail | 2025 |
| Creatools AS | Professional & scientific | 2024 |
| Culinar Smak AS | Hospitality | 2025 |