| 20SEVEN Holding AS | Real estate | 2021 |
| 2CARE4 Aps Nuf | Wholesale & retail | 2014 |
| 3 B Tveite AS | Real estate | 2024 |
| 3 J Eiendom AS | Real estate | 2024 |
| 3DIGIT, Measure & Position AS | Professional & scientific | 2015 |
| 7 Seas Energy AS | Professional & scientific | 2025 |
| 7 Seas Technology AS | Professional & scientific | 2014 |
| A Og K Folkman | Administrative & support | 1983 |
| A-Tech Proffservice AS | Administrative & support | 2001 |
| A-W Holding AS | Construction | 2020 |
| A. Hovda Holding AS | Professional & scientific | 2022 |
| Aadnes Trafikkskole AS | Education | 2000 |
| Aagre AS | Agriculture & fishing | 1997 |
| Aagreheia AS | Real estate | 2013 |
| Aas Eiendom Invest AS | Real estate | 2007 |
| Aas Eiendomsutvikling AS | Real estate | 2004 |
| Abi AS | Wholesale & retail | 2011 |
| Access! AS | Professional & scientific | 1984 |
| Activepeople AS | Administrative & support | 2001 |
| Activepeople Norway AS | Professional & scientific | 2014 |
| Addparking AS | Professional & scientific | 2022 |
| Adels Maling AS | Construction | 2025 |
| Advokat Øyvind Tvedt AS | Professional & scientific | 2022 |
| Advokatfirmaet Anders Folkman AS | Professional & scientific | 2018 |
| Af Tangen Allé Entreprenør Ans | Construction | 2025 |
| AG Fysioterapi AS | Health & social care | 2024 |
| Agder Bilberging AS | Transport & logistics | 2017 |
| Agder Bolig Utleie AS | Real estate | 2013 |
| Agder Dental AS | Health & social care | 2019 |
| Agder Dyrlegekontor AS | Professional & scientific | 2012 |
| Agder Eiendomsservice AS | Agriculture & fishing | 2016 |
| Agder El Installasjon AS | Construction | 2002 |
| Agder Flisservice AS | Construction | 2018 |
| Agder Frø Og Maskin AS | Wholesale & retail | 1985 |
| Agder Gulv Og Flis AS | Construction | 2016 |
| Agder Karosseri AS | Other services | 2014 |
| Agder Karosseri Og Billakkering AS | Real estate | 1983 |
| Agder Karosseri Og Eiendom AS | Real estate | 2012 |
| Agder Miljøfrakt AS | Transport & logistics | 2019 |
| Agder Multiservice AS | Other services | 2024 |
| Agder Ocean Shipping AS | Transport & logistics | 2004 |
| Agder Offshore AS | Professional & scientific | 2002 |
| Agder Ops Vegselskap AS | Construction | 2006 |
| Agder Solcelle AS | Construction | 2022 |
| Agder Vedutsalg Da | Wholesale & retail | 2003 |
| Agder Økonomi Holding AS | | 2011 |
| Agderparken BN11 Lagerseksjoner AS | Real estate | 2023 |
| Agderparken BN11 Tomt 1 AS | Real estate | 2023 |
| AGDERTOPP1 AS | | 2002 |
| Agenda Holding AS | | 2024 |
| Agenda Vision AS | | 2025 |
| Aho Holding AS | Professional & scientific | 1997 |
| Ahom Holding AS | | 2026 |
| AI Eiendom AS | Real estate | 2018 |
| Akisa Invest AS | | 2022 |
| Akla Eiendom AS | Real estate | 2019 |
| Akm Eiendom AS | Real estate | 2019 |
| Aktiv Fritid Sør AS | Real estate | 2012 |
| Aktiv Grimstad AS | Real estate | 2025 |
| Aktiv Helse I Fokus AS | Health & social care | 2013 |
| Aktiv Invest Sør AS | Real estate | 2005 |
| Aktiv Renhold AS | Administrative & support | 2024 |
| Aktiv&Sterk AS | Education | 2024 |
| Al-Mostafa Asian Food AS | Wholesale & retail | 2018 |
| Alb AS | Professional & scientific | 2005 |
| Albertine Helse AS | Health & social care | 2023 |
| Alfabeta AS | Wholesale & retail | 2023 |
| Algaeomega AS | Professional & scientific | 2016 |
| Allegro Ballett Studio AS | Education | 2008 |
| Allsidig Drift AS | Agriculture & fishing | 2025 |
| Alltid Alt AS | | 2006 |
| Allvia Vital AS | Wholesale & retail | 2024 |
| Almeida-Lien Kunst AS | Wholesale & retail | 2025 |
| Alsab Invest AS | Financial services | 2005 |
| Alsand Eiendom AS | Real estate | 2007 |
| Alsand Holding AS | Real estate | 2007 |
| Alternativ Energi AS | Wholesale & retail | 2000 |
| Alven Eventyrbarnehage I Trollvika AS | Education | 2013 |
| Alwa AS | Real estate | 1965 |
| Amabel Eiendom AS | Real estate | 2015 |
| Amfi Og Tribune AS | Professional & scientific | 2003 |
| Amodei AS | Real estate | 2006 |
| Amundsen International Holding AS | Real estate | 2014 |
| Amundsen International Properties AS | Real estate | 2017 |
| Amx Invest AS | Real estate | 2021 |
| Andas AS | | 2021 |
| Andersson & Co AS | Professional & scientific | 2015 |
| Anderssons Elektriske AS | Wholesale & retail | 1984 |
| Andre Hammer Consulting AS | Wholesale & retail | 2017 |
| Andre J Ugland Holding AS | | 2013 |
| Andree Hobrak Byggtjenester AS | Construction | 2020 |
| Andrino Holding AS | | 2021 |
| Anima Sana Psykologtjeneste AS | Health & social care | 2023 |
| Anna Signes Trafikkskole AS | Education | 2021 |
| Annemorhuset Barnehage AS | Education | 2004 |
| Anu Holding AS | | 2019 |
| Anzyz Technologies AS | Information & communication | 2014 |
| Apex Gruppen AS | | 2026 |
| Apexia Holding AS | | 2023 |
| Apollon Holding AS | Arts & recreation | 2020 |