| Betongkutteren AS | Construction | 2007 |
| BG Maling Og Gulvsliping Da | Construction | 1999 |
| BG Skog Og Trefelling AS | Agriculture & fishing | 2021 |
| Biblos AS | Other services | 2013 |
| Bilauksjonen Kristiansand AS | Real estate | 1991 |
| Bilbygg Sør AS | Real estate | 2022 |
| Bilen Din AS | Other services | 1995 |
| Bilen Din Invest AS | Other services | 2020 |
| Billie 1 Holding AS | Arts & recreation | 2023 |
| Billy Søgne AS | Wholesale & retail | 2022 |
| Bilnerden.No AS | Wholesale & retail | 2017 |
| Birkedalsveien 31 AS | Manufacturing | 2008 |
| Birkedalsveien 34 AS | Real estate | 2021 |
| Birkedalsveien 35 AS | Real estate | 2024 |
| Birkedalsveien 35 Seksjon 4 AS | Real estate | 2007 |
| Birkedalsveien 35 Seksjon 5 AS | Real estate | 2007 |
| Birkedalsveien 55 AS | Real estate | 2005 |
| Birkedalsveien 62 A-B AS | Real estate | 2026 |
| Birkedalsveien 64 AS | Real estate | 2016 |
| Birkedalsveien 68 AS | Real estate | 2019 |
| Birkedalsveien 68C AS | Real estate | 2002 |
| Birkedalsveien 78 AS | Real estate | 2018 |
| Birkedalsveien AS | Real estate | 2020 |
| Birkedalsveien Invest AS | Real estate | 2004 |
| Birthe Larsen AS | Financial services | 2014 |
| Bjørk Frisør AS | Other services | 2013 |
| Blikkenslager T I Pedersen AS | Construction | 2018 |
| Blokkskatt AS | Information & communication | 2025 |
| Bloomin AS | Wholesale & retail | 2026 |
| BM Motorsport AS | Other services | 2026 |
| Bnauto AS | Wholesale & retail | 2013 |
| Boligen Sør AS | Construction | 2019 |
| Bondens Kolonial AS | Wholesale & retail | 2024 |
| Borz Gym AS | Arts & recreation | 2026 |
| Borågeren Eiendom AS | Real estate | 2018 |
| Borøya Avløpslag SA | Water & waste | 2016 |
| Borøya Vannverk SA | Water & waste | 1985 |
| Bravesteps AS | Professional & scientific | 2025 |
| Breilid-Repstad Invest AS | | 2025 |
| Brillefin AS | Wholesale & retail | 2021 |
| Brim Bygg AS | Real estate | 2018 |
| Broderidesign AS | Manufacturing | 2022 |
| Brukerutstyr AS | Wholesale & retail | 2022 |
| Bryggeservice Sør AS | Manufacturing | 2000 |
| Bråten Innovation AS | Professional & scientific | 2021 |
| Brødrene Grim AS | Real estate | 2024 |
| Brødrene Try AS | Real estate | 1997 |
| Bsa Invest AS | Financial services | 2015 |
| BT Bil AS | Wholesale & retail | 2023 |
| Buehaven AS | Real estate | 2023 |
| Buland Skog Da | Agriculture & fishing | 2008 |
| Bunnpris Høllen AS | Wholesale & retail | 2006 |
| Business to Business Marketing AS | Professional & scientific | 2001 |
| Byen Eiendom AS | Real estate | 2024 |
| Byge AS | Professional & scientific | 2020 |
| Bygg & Profil AS | Manufacturing | 2025 |
| Bygg & Teknikk AS | Professional & scientific | 2005 |
| Bygg I Sør AS | Real estate | 2006 |
| Bygg Og Vedlikeholdstjenester AS | Construction | 2022 |
| Byggfirma Jakob AS | Construction | 2011 |
| Byggfirma Stian a. Larsen AS | Construction | 2023 |
| Byggmester Atle Og Martin Aamodt AS | Construction | 2013 |
| Byggmester Skraastad AS | Construction | 2022 |
| Byggmester Steinar Try AS | Construction | 2011 |
| Byggmester Vidar Reger AS | Construction | 1997 |
| Byggmester Øyvind Bakkevold AS | Construction | 2001 |
| Byggtech Ans | Construction | 2001 |
| Bykluminvest AS | Agriculture & fishing | 2011 |
| Bølgen Eiendomsutvikling AS | | 2017 |
| C.N. Invest AS | Real estate | 2023 |
| Camilla Ommundsen AS | Wholesale & retail | 2025 |
| Campino Søgne AS | Hospitality | 2014 |
| Cato Hetland Holding AS | Real estate | 2023 |
| Caza Invest AS | Construction | 2023 |
| CB Industriservice AS | Manufacturing | 2026 |
| Charlottes Fotterapi AS | Health & social care | 2025 |
| CHN Invest AS | | 2018 |
| CHN Marin AS | Wholesale & retail | 2023 |
| Christianssand Eiendom AS | Real estate | 2017 |
| Christianssand Servicestasjon AS | Wholesale & retail | 2015 |
| CJ Eiendom AS | Real estate | 2016 |
| Clearsight AS | Wholesale & retail | 2021 |
| CMT Holding AS | | 2020 |
| CN Agder Invest AS | Real estate | 2020 |
| Codeify AS | Information & communication | 2025 |
| Corona Holding AS | Real estate | 2005 |
| Corona Interiør AS | Wholesale & retail | 1976 |
| Cpmaterials AS | Professional & scientific | 2014 |
| Craftwear AS | Construction | 2021 |
| Cresta AS | | 2026 |
| Cy Holding AS | | 2012 |
| D-T Holding AS | | 2024 |
| Da Long AS | Real estate | 2009 |
| Dag Christian Nielsen Holding AS | Financial services | 2009 |
| Danielsen Og Muriqi Bygg AS | Construction | 2021 |
| Decka AS | Professional & scientific | 2016 |
| Deep Blue Solutions AS | Administrative & support | 2017 |
| Dennis & Co AS | Professional & scientific | 2012 |
| Dennis AS | Professional & scientific | 2016 |
| Devens Cafe AS | Hospitality | 2022 |