| Azg Ausbein Und Zerlege Service Sarl | Manufacturing | 2000 |
| Azumi-No AS | Hospitality | 2023 |
| Azur AS | | 2021 |
| Aøb Invest AS | | 2022 |
| B & K Vask Da | Administrative & support | 1988 |
| B & T Invest AS | Real estate | 2005 |
| B Cool Consult Nuf | Construction | 2006 |
| B Eiendom AS | Real estate | 2025 |
| B Vingerhagen AS | | 2023 |
| B&C Kristiansand AS | Hospitality | 2025 |
| B&F Holding AS | Professional & scientific | 2005 |
| B&G Investering AS | | 2025 |
| B&M Invest AS | | 2023 |
| B&R Consulting AS | Education | 2021 |
| B&T Stray AS | Real estate | 2006 |
| B-T Holding AS | Construction | 2018 |
| B. Eggen Holding AS | Construction | 2022 |
| B.O Invest AS | | 2022 |
| Babycare AS | Wholesale & retail | 1993 |
| Babycare Detalj Kristiansand AS | Wholesale & retail | 2004 |
| Babysvømming Kristiansand Da | Hospitality | 2005 |
| Back to School Holding AS | Wholesale & retail | 2017 |
| Backe Sør AS | Construction | 2022 |
| Backer Sør AS | | 2026 |
| Backhand AS | Professional & scientific | 2016 |
| Bacon Holding AS | Real estate | 2016 |
| Badeland Eiendom AS | Real estate | 2009 |
| Bae Invest AS | Real estate | 2007 |
| Bageren Holding AS | | 2026 |
| Bagto Eiendom AS | Real estate | 2012 |
| Bagus Da | Wholesale & retail | 2000 |
| Bajas Holding AS | Financial services | 2005 |
| Bakgården Bar AS | Hospitality | 1993 |
| Bakgården Holding AS | Hospitality | 2005 |
| Bakken Performance AS | Arts & recreation | 2026 |
| Bakstad Holding AS | | 2025 |
| Bakstvogna AS | Hospitality | 2018 |
| Balchensvei 5 Bolig AS | Real estate | 2021 |
| Balchensvei 5 Eiendom AS | Real estate | 1997 |
| Bald and Beautiful Productions AS | Arts & recreation | 2013 |
| Balder AS | Real estate | 1999 |
| Balder Bedriftshelsetjeneste Ans | Health & social care | 2003 |
| Balder Drammen Holding AS | Real estate | 2019 |
| Balder Fastigheter Norge AS | Real estate | 2016 |
| Balder Sølfast Park AS | Real estate | 2019 |
| Balder Vekst AS | Real estate | 2005 |
| Baltic Holding AS | | 2025 |
| Balto Invest AS | | 2019 |
| Bamse Brakar B3 AS | Real estate | 2025 |
| Bamse Utleie B4 AS | Real estate | 2008 |
| Banana Holding AS | | 2025 |
| Banatti AS | Wholesale & retail | 2026 |
| Bandagisten AS | Wholesale & retail | 1964 |
| Baneheia Park AS | Real estate | 2007 |
| Baneheia Park Næringseiendom AS | Real estate | 2021 |
| Bang Kommunikasjon AS | Professional & scientific | 2012 |
| Bangarang! AS | Professional & scientific | 2015 |
| Banjara AS | Information & communication | 2014 |
| Barabb AS | | 2025 |
| Barberer'N AS | Other services | 2008 |
| Bare Marte AS | Wholesale & retail | 2018 |
| Bare Takst AS | Real estate | 2023 |
| Baresy AS | Professional & scientific | 2020 |
| Baring Farsund Holding AS | Professional & scientific | 2021 |
| Baring Global AS | | 2025 |
| Baring Group AS | Agriculture & fishing | 2022 |
| Baring Ocean AS | Agriculture & fishing | 2021 |
| Baring Shanwei AS | | 2024 |
| Barkaden Kristiansand AS | Hospitality | 2026 |
| Barkved Hageservice AS | Administrative & support | 2025 |
| Barley Holding AS | | 2024 |
| Barnefilmfestivalen AS | Information & communication | 2007 |
| Barneland AS | Wholesale & retail | 1988 |
| Barnemote AS | Wholesale & retail | 2002 |
| Barrikaden AS | Hospitality | 2023 |
| Barrus Capital AS | Professional & scientific | 1997 |
| Barstøl Eiendom AS | Real estate | 2020 |
| Barstøl Holding AS | Real estate | 2014 |
| Barstøltoppen AS | Real estate | 2021 |
| Barstølveien 102-104 Eiendom AS | Real estate | 2002 |
| Barstølveien 11 AS | Real estate | 1993 |
| Barstølveien 15 AS | Real estate | 2019 |
| Barstølveien 17 AS | Real estate | 2007 |
| Barstølveien 19 AS | Real estate | 2007 |
| Barstølveien 24 B AS | Real estate | 2008 |
| Barstølveien 24 D AS | Real estate | 1999 |
| Barstølveien 26 AS | Real estate | 2005 |
| Barstølveien 28B AS | Real estate | 2023 |
| Barstølveien 3 AS | Real estate | 2008 |
| Barstølveien 30 AS | Real estate | 1998 |
| Barstølveien 32 AS | Real estate | 2006 |
| Barstølveien 34 AS | Real estate | 2005 |
| Barstølveien 40 AS | Real estate | 2007 |
| Barstølveien 44 AS | Real estate | 2006 |
| Barstølveien 46 a AS | Real estate | 2010 |
| Barstølveien 50 - 54 AS | Real estate | 2006 |
| Barstølveien 60-62 AS | Real estate | 2001 |
| Barstølveien 7A AS | Real estate | 2022 |
| Barstølveien 82 AS | Real estate | 2008 |
| Barstølveien 96 AS | Real estate | 2015 |