| Bråtane Invest AS | | 2014 |
| Bråvann Park - Seksjon 12 AS | Real estate | 2018 |
| Bråvann Park - Seksjon 15 AS | Real estate | 2018 |
| Bråvann Park - Seksjon 4 AS | Real estate | 2018 |
| Bråvann Park - Seksjon 5 AS | Real estate | 2018 |
| Bråvann Park - Seksjon 7 AS | Real estate | 2018 |
| Bråvann Park - Seksjon 8 AS | Real estate | 2018 |
| Bråvann Utvikling AS | Real estate | 2019 |
| Bråvannskleiva 1 AS | Real estate | 2023 |
| Bråvannskleiva 6 AS | Real estate | 2025 |
| Bråvannsløkka 3 AS | Real estate | 2025 |
| Brødrene Finnestad AS | Wholesale & retail | 2024 |
| Brødrene Hillesund AS | Real estate | 1979 |
| Brødrene Hillesund Garasjeportfabrikk AS | Manufacturing | 1987 |
| Brødrene Nygaard Ans | Real estate | 1928 |
| Brødrene Nygaard Invest Ans | Real estate | 2008 |
| Brødrene Princ Og Alban Ans | Hospitality | 2001 |
| Brødrene Stray AS | Real estate | 2005 |
| Brøyte-Service AS | Administrative & support | 2014 |
| Brøyteren AS | Administrative & support | 2024 |
| BT & Co AS | Construction | 2023 |
| BT Seat AS | Education | 2018 |
| Bta Holding AS | Professional & scientific | 2005 |
| Btregnskap AS | Professional & scientific | 2014 |
| Bualuang Thai Massage AS | Other services | 2019 |
| Bud & Vaktmester Service AS | Transport & logistics | 2006 |
| Budserv AS | Transport & logistics | 2023 |
| Bue Capital AS | Financial services | 2021 |
| Bue Fix AS | Administrative & support | 2026 |
| Buena Vista AS | Hospitality | 2005 |
| Buråsen 103 AS | Real estate | 2012 |
| Buråsen 11 AS | Real estate | 2023 |
| Buråsen 17 AS | Real estate | 2003 |
| Buråsen 18 AS | Real estate | 2007 |
| Buråsen 3-5 AS | Real estate | 2005 |
| Buråsen 32 AS | Real estate | 2015 |
| Buråsen 7 AS | Real estate | 2015 |
| Buråsen Eiendom AS | Real estate | 2006 |
| Buråsen Utvikling AS | Real estate | 2008 |
| Busck AS | Wholesale & retail | 2001 |
| Business Management Partner AS | Professional & scientific | 2022 |
| Business on Wheels AS | Manufacturing | 2014 |
| Buster Management AS | Professional & scientific | 2014 |
| Butangen Utvikling AS | Professional & scientific | 2024 |
| Butikk Og Informasjonssystemer AS | Wholesale & retail | 1995 |
| Butikkdrift Agder AS | Wholesale & retail | 2018 |
| Butikkdrift Alem Mebrahtom AS | Wholesale & retail | 2025 |
| Butikkdrift Nick AS | Wholesale & retail | 2025 |
| Butikkdrift Omid AS | Wholesale & retail | 2024 |
| Butikkhjelp AS | Wholesale & retail | 2015 |
| Butikkhuset Eiendom AS | Real estate | 2000 |
| Butikkhusgården Bygg AS | Construction | 2007 |
| Butikkstyring AS | Information & communication | 2011 |
| Buxus Evergreen AS | | 2022 |
| Buysell AS | Information & communication | 2025 |
| By & Bo Holding AS | Real estate | 2013 |
| By Bente AS | Wholesale & retail | 2020 |
| By Fjellvang AS | Wholesale & retail | 2023 |
| By Hair Studio AS | Other services | 2024 |
| By Olive AS | Professional & scientific | 2024 |
| Bydalslia Utvikling AS | Real estate | 2012 |
| Byen Media AS | Professional & scientific | 2018 |
| Byfjorden Charter AS | Transport & logistics | 2013 |
| Bygg & Bolig Partner AS | Administrative & support | 2004 |
| Bygg Fra Oss AS | Construction | 2017 |
| Bygg I Vater AS | Construction | 2013 |
| Bygg Olsen Ans | Construction | 1988 |
| Bygg Sør AS | Real estate | 1991 |
| Byggco Eiendom AS | Real estate | 2014 |
| Byggeren Eiendom AS | Real estate | 2022 |
| Byggeren Holding AS | Construction | 2020 |
| Byggevirksomhet AS | Construction | 1966 |
| Byggfirma Anders Klovland AS | Construction | 2010 |
| Byggfirma Bjelle Gård AS | Construction | 2018 |
| Byggfirma Erik Gavelstad AS | Construction | 2016 |
| Byggfirma Jarle Hægeland AS | Construction | 2012 |
| Byggfirma Martin Unhjem AS | Construction | 2022 |
| Byggfirma Peter Haugaa AS | Construction | 2023 |
| Byggfornyeren Kristiansand AS | Construction | 2023 |
| Byggkonsulent Sør AS | Professional & scientific | 2022 |
| Bygglos AS | Professional & scientific | 2013 |
| Byggmester a. Klavenes AS | Construction | 2008 |
| Byggmester Berggren Og Rogstad AS | Construction | 2023 |
| Byggmester Dale Og Tønnessen AS | Administrative & support | 2023 |
| Byggmester Dovland AS | Construction | 2017 |
| Byggmester Engesland AS | Construction | 2014 |
| Byggmester Frigstad AS | Construction | 2020 |
| Byggmester Frode Lomeland AS | Construction | 2009 |
| Byggmester Gordon Jensen AS | Construction | 2012 |
| Byggmester Helge Taraldsen AS | Construction | 2009 |
| Byggmester Hjort AS | Construction | 2022 |
| Byggmester Høgetveit AS | Construction | 2000 |
| Byggmester Jørgen a. Dversnes AS | Construction | 2012 |
| Byggmester Jørgen Dovland AS | Construction | 2008 |
| Byggmester Kjetil Eftevåg AS | Construction | 2013 |
| Byggmester Kristiansen AS | Construction | 2004 |
| Byggmester Kristoffer Mjaaland AS | Construction | 2017 |
| Byggmester Magnar Vatne AS | Construction | 2005 |
| Byggmester Marius Kristensen AS | Construction | 2025 |
| Byggmester Mats Myhre AS | Construction | 2019 |