| 3I3NDOM AS | Professional & scientific | 2018 |
| A-Drift AS | Construction | 2016 |
| A-Tech AS | Construction | 2015 |
| A-Tech Byggmontering AS | Construction | 2023 |
| A-Tech DC Services AS | Professional & scientific | 2024 |
| A-Tech Eiendom AS | Real estate | 2022 |
| A. Waag & Co. AS | Construction | 2008 |
| A.I. Tveita Invest AS | | 2022 |
| Aarid AS | Professional & scientific | 2008 |
| Aasbø-Nielsen Invest AS | | 2024 |
| Achat Holding AS | | 2024 |
| Aga Company AS | Wholesale & retail | 2017 |
| Agnar AS | Professional & scientific | 1998 |
| Ak-Tek AS | Professional & scientific | 2014 |
| Albus Eiendom AS | Real estate | 2022 |
| Alex's Food Truck AS | Hospitality | 2020 |
| Alive Helse Kristiansand AS | Health & social care | 2016 |
| Alive Holding AS | | 2021 |
| Allround AS | Professional & scientific | 1957 |
| Alm Tech AS | Professional & scientific | 2011 |
| Amundsen Bygg AS | Construction | 2021 |
| Amundsen Holding AS | | 2021 |
| Amundsen Ventilasjon AS | Construction | 2020 |
| Amy Cliphouse AS | Other services | 2012 |
| Andare AS | Professional & scientific | 2016 |
| Andersen Holding AS | Real estate | 1998 |
| Anib Holding AS | | 2021 |
| Anleggsdrift AS | Construction | 1990 |
| Apotekergaarden AS | Real estate | 2013 |
| Ar Marine Service AS | Manufacturing | 2024 |
| Arbeid & Fritid AS | Real estate | 1988 |
| Ark Bygg Og Flis AS | Construction | 2022 |
| Arnadalen Eiendom AS | Real estate | 2013 |
| Arve Lier Olsen AS | Construction | 2013 |
| AS Sekkekilen Eiendom | Real estate | 2021 |
| Asdalstrand 171 AS | Real estate | 2017 |
| Asta Consulting AS | | 2026 |
| Asvall AS | Professional & scientific | 1993 |
| Autopit AS | Wholesale & retail | 2025 |
| Ava Bygg Og Varme AS | Wholesale & retail | 2024 |
| Axenter AS | Information & communication | 2018 |
| B Holding AS | Real estate | 2008 |
| Babord AS | Real estate | 1999 |
| Bamble Andelsgård SA | Agriculture & fishing | 2015 |
| Bamble Boligprosjekter AS | Professional & scientific | 1995 |
| Bamble Bruk AS | Real estate | 1997 |
| Bamble Eiendom AS | Administrative & support | 2014 |
| Bamble Golfdrift AS | Arts & recreation | 2000 |
| Bamble Hagesenter AS | Wholesale & retail | 1995 |
| Bamble Handelspark AS | Real estate | 2017 |
| Bamble Kiropraktor Klinikk Da | Health & social care | 2022 |
| Bamble Lagerseksjoner AS | Real estate | 2024 |
| Bamble Næringspark AS | Real estate | 2009 |
| Bamble Pukkservice AS | Mining & quarrying | 2020 |
| Bamble Rør AS | Construction | 1993 |
| Bamble Rør Holding AS | | 2025 |
| Bamble Skogsdrift AS | Agriculture & fishing | 2017 |
| Bamble Taxi SA | Transport & logistics | 1979 |
| Bamble Tomteselskap AS | Real estate | 2020 |
| Bamble Utleie AS | Administrative & support | 2026 |
| Bamble Ved Da | Agriculture & fishing | 2006 |
| Bamblepoteta Ans | Hospitality | 2021 |
| Bartera AS | Information & communication | 2025 |
| Bauta Byggtjenester AS | Construction | 2022 |
| BB Bygg Stathelle AS | Construction | 2009 |
| BB Prosjekt AS | Real estate | 2005 |
| BDB Ing B Damberg Byggesaksansvarlig AS | Professional & scientific | 1998 |
| Benessio AS | Education | 2026 |
| Bente Egell Johnsen AS | Wholesale & retail | 1997 |
| Benteck Holding AS | Financial services | 2005 |
| Beraten Invest AS | | 2024 |
| Bernie Holding AS | Real estate | 2021 |
| Bernt Erik Andersen Holding AS | | 2005 |
| Bernt Espen Sitt AS | Professional & scientific | 2020 |
| BF5 Holding AS | Wholesale & retail | 2021 |
| BH Dahlen Kran & Transport AS | Transport & logistics | 2013 |
| Bjerkene Bolig AS | Real estate | 2008 |
| Bjerkene Invest AS | Financial services | 2017 |
| Bjordam AS | Construction | 2024 |
| Bjurholt AS | Transport & logistics | 2022 |
| Bjørkeløkka AS | Real estate | 2005 |
| Bjørkøya Og Siktesøya Drift Vann Og Avløp SA | Water & waste | 2013 |
| Bjørkøya Utvikling AS | Real estate | 2006 |
| BK Installasjon AS | Construction | 2025 |
| Bleikelia Skog Og Tre Ans | Agriculture & fishing | 2018 |
| Blue Energy Group Norway AS | Professional & scientific | 2026 |
| Bluegreen Base AS | Real estate | 2022 |
| Bluegreen Fusion AS | Manufacturing | 2020 |
| Bluegreen Future AS | Professional & scientific | 2022 |
| Bluegreen Group AS | Professional & scientific | 2023 |
| Bluegreen Investments AS | Professional & scientific | 2020 |
| Bluegreen Seafood AS | Agriculture & fishing | 2021 |
| Bluegreen Technologies AS | Manufacturing | 2016 |
| Bluegreen Visions II AS | Manufacturing | 2023 |
| Bluegreen Visions III AS | | 2023 |
| Blueiq AS | Administrative & support | 2025 |
| BMJ Eiendom AS | Real estate | 2013 |
| Boligsalg AS | | 2023 |
| Borealis | | 1996 |
| Borealis GmbH Nuf | Wholesale & retail | 2007 |