| Aas Elektronikk AS | Professional & scientific | 2005 |
| Activum Christensen & Hanssen Ans | Administrative & support | 1998 |
| Aduus Holding AS | | 2020 |
| Agder Autosalg AS | Wholesale & retail | 2022 |
| Agder Dekksenter AS | Wholesale & retail | 2022 |
| Agder Design Verksted AS | Manufacturing | 2019 |
| Agder Elektroservice Da | Manufacturing | 2005 |
| Agder Flåteservice AS | Wholesale & retail | 2025 |
| Agder Massasjebad AS | Wholesale & retail | 2008 |
| Agder Økonomistyring AS | Professional & scientific | 2016 |
| Arendal Elektro AS | Construction | 2013 |
| Arendal Energi AS | Professional & scientific | 2018 |
| Arendal Karosseri AS | Wholesale & retail | 1986 |
| Arendal Matkompani AS | Hospitality | 2023 |
| Arka Eiendom AS | Real estate | 2002 |
| Art Camper AS | Professional & scientific | 2023 |
| Asapco AS | Real estate | 2002 |
| Aust-Agder Consulting & Instalation AS | Construction | 2012 |
| Automegler AS | Wholesale & retail | 2023 |
| Beck & Beck AS | Professional & scientific | 2022 |
| Bendikskleiv 4 AS | Real estate | 1993 |
| BG Hus AS | Construction | 2019 |
| BG Nilsen Invest AS | Construction | 2022 |
| Bil AS | Real estate | 1925 |
| Bilomsetningen Arendal AS | Wholesale & retail | 2019 |
| Bilomsetningen Bildeler Holding AS | Wholesale & retail | 2019 |
| Birkeland Media & Invest AS | Information & communication | 2026 |
| Björkqvist Eiendom AS | Real estate | 2000 |
| Bunnpris Nedenes AS | Wholesale & retail | 2006 |
| Byggetegning AS | Professional & scientific | 2024 |
| CB Beck AS | Professional & scientific | 2009 |
| City Fitness Nedenes AS | Arts & recreation | 2019 |
| Cobra Marin AS | Manufacturing | 1995 |
| D E Me AS | Arts & recreation | 2021 |
| D R Invest AS | Professional & scientific | 2006 |
| Datahjelp Arendal AS | Other services | 2017 |
| Den Lille Blåstrupen Ans | Agriculture & fishing | 2026 |
| Dux Marine AS | Professional & scientific | 2022 |
| Egin Eiendom AS | Real estate | 1990 |
| Elektro Sør Arendal Da | Construction | 2003 |
| Emh Holding AS | | 2020 |
| Energa AS | Professional & scientific | 2006 |
| Energetic Materials Consulting AS | Professional & scientific | 2026 |
| Equine Lounge AS | Professional & scientific | 2022 |
| Erholding AS | Professional & scientific | 2013 |
| Ethos Nordic AS | Information & communication | 2026 |
| Falkeplassen Eiendom AS | Real estate | 2017 |
| Fave Holding AS | | 2026 |
| FCV Trading AS | Wholesale & retail | 2012 |
| FDF Invest AS | | 2023 |
| Feiermester Haveland AS | Administrative & support | 2010 |
| Funnycore AS | Wholesale & retail | 2019 |
| Gjøvdal Fellesbeite SA | Agriculture & fishing | 1972 |
| God Praksis AS | Education | 2013 |
| Gunder AS | | 2024 |
| Hartvig Olsen Holding AS | Wholesale & retail | 2005 |
| Hestesko Magasinet AS | Wholesale & retail | 2025 |
| Hisøy Bygg AS | Construction | 2014 |
| Hjemhjelpen AS | Education | 2025 |
| Hjørnevik Holding AS | | 2024 |
| HN Bygg AS | Construction | 2018 |
| Hovslager Solberg AS | Agriculture & fishing | 2022 |
| Hytteservice- AS | Real estate | 2020 |
| Iconsult AS | Professional & scientific | 2021 |
| Iltek AS | Manufacturing | 2010 |
| Inertia AS | Arts & recreation | 2022 |
| Innovara AS | Information & communication | 2026 |
| Inwestergren AS | | 2026 |
| Isoenergi Agder AS | Construction | 2018 |
| Jeppesen AS | Real estate | 1963 |
| Jobbklar AS | Health & social care | 1989 |
| Josephsen AS | Construction | 2024 |
| K-Marine AS | Education | 2005 |
| Ka Midtstøl AS | Construction | 2012 |
| Karou AS | Professional & scientific | 2024 |
| Kister & Urner AS | Wholesale & retail | 2024 |
| Kranmannen AS | Transport & logistics | 2019 |
| L 64 Bygg AS | Real estate | 2001 |
| Lars Thorbjørnsen Graving Og Transport AS | Construction | 2013 |
| Lauvdal AS | Health & social care | 2014 |
| Lien Utleie AS | Administrative & support | 2026 |
| Lite-House AS | Professional & scientific | 2022 |
| Lollaborg Invest AS | Wholesale & retail | 2013 |
| Lorentzen Maskin Og Transport AS | Construction | 2021 |
| Lukaneta Bygg AS | Construction | 2024 |
| Lumene Media AS | Information & communication | 2026 |
| Lundvall Holding AS | | 2026 |
| Løvdal Auto AS | Other services | 2004 |
| M22 Invest AS | | 2020 |
| Mboku AS | | 2026 |
| Mediadrift Da | Information & communication | 1997 |
| Mester Lindal AS | Real estate | 2019 |
| Mi Solutions AS | Professional & scientific | 2025 |
| Min Sauna AS | Professional & scientific | 2023 |
| Mølla Bolig AS | Real estate | 2020 |
| Mølla Lager AS | Real estate | 2022 |
| Natalya Østrem AS | Health & social care | 2024 |
| Natvigheia Barnehage SA | Education | 2004 |
| NCS Holding AS | Health & social care | 2020 |
| NCV Holding AS | Real estate | 2019 |