| Byggmester N. P Andersen AS | Construction | 2018 |
| Byggmester Ove Fosse AS | Construction | 2020 |
| Byggmester Per Christian Thorkildsen AS | Construction | 2021 |
| Byggmester Ragnar Pedersen AS | Construction | 2024 |
| Byggmester Rasmussen & Fosseli AS | Real estate | 2026 |
| Byggmester Rune Byklum AS | Construction | 2021 |
| Byggmester Rune Egeland AS | Construction | 2008 |
| Byggmester S a Sødal AS | Construction | 2002 |
| Byggmester Stein Skaar AS | Construction | 2002 |
| Byggmester Steinar Olsen AS | Construction | 2023 |
| Byggmester Sørli AS | Construction | 2025 |
| Byggmester Tønnes AS | Construction | 2005 |
| Byggmester Østensvik AS | Construction | 2014 |
| Byggmester Øystein Haaverstad AS | Construction | 2017 |
| Byggmesterfirma Kjellevikhansen AS | Construction | 2013 |
| Byggmo AS | Real estate | 1990 |
| Byggmo Eiendom AS | Real estate | 2000 |
| Byggprodukter Utl Ans | Wholesale & retail | 2015 |
| Byggservice Sør AS | Construction | 2019 |
| Byggtrade Ans | Construction | 2011 |
| Byggtrade AS | Wholesale & retail | 2023 |
| Byggtrade Limited Nuf | Construction | 2011 |
| Byggutvikling AS | Real estate | 1996 |
| Byhaven Holding AS | Real estate | 2013 |
| Byhaven Næring 1 AS | Real estate | 2018 |
| Byhaven Næring 2 AS | Real estate | 2018 |
| Byhaven Næring 3 AS | Real estate | 2018 |
| Byhaven Næring 5 AS | Real estate | 2018 |
| Byklum Invest AS | Administrative & support | 2002 |
| Byklum Varehandel AS | Wholesale & retail | 2018 |
| Bymoen 23 AS | Real estate | 2005 |
| Bymoen 3 AS | Real estate | 2006 |
| Bynoma AS | Wholesale & retail | 2024 |
| Bystranda Eiendom AS | Real estate | 2009 |
| Bystranda Legesenter Da | Health & social care | 2013 |
| Bystranda Næring AS | Real estate | 2006 |
| Bytt.No AS | Information & communication | 2014 |
| Boligaksjeselskapet Agder Alle 4 | Households | 1947 |
| Båly Kontorfellesskap AS | Agriculture & fishing | 2006 |
| Båt Is AS | | 2021 |
| Båthuset Gruppen AS | Wholesale & retail | 2021 |
| Båthuset Kristiansand AS | Wholesale & retail | 2013 |
| Båthuset Opplag AS | Real estate | 2001 |
| Båtmannsgt 4 AS | Real estate | 1998 |
| Båtmontasje AS | Manufacturing | 2019 |
| Båtopplag Sør AS | Transport & logistics | 2022 |
| Båtsmannsg 4 Ans | Real estate | 1986 |
| Båtutstyr Norge AS | Wholesale & retail | 2025 |
| Bærekraft Kristiansand AS | Professional & scientific | 2020 |
| Bærkart AS | Information & communication | 2020 |
| Bø Handelspark AS | Real estate | 2008 |
| Bølgen Båtservice AS | Manufacturing | 2023 |
| Bølgeskvulpet AS | Financial services | 2007 |
| Bøma AS | Financial services | 2005 |
| Bønder I Byen Drift AS | Hospitality | 2012 |
| Bønder I Byen Oslo AS | Hospitality | 2023 |
| Børslid Montasje AS | Construction | 2004 |
| Bøs Bygg Og Eiendom AS | Real estate | 2012 |
| Bøttger AS | Construction | 2005 |
| Bøttger Invest AS | Real estate | 2020 |
| Bøttger Næringseiendom AS | | 2023 |
| C Aamodt AS | Agriculture & fishing | 2013 |
| C E Holding AS | Construction | 2020 |
| C Eiendom AS | Real estate | 2004 |
| C Herlofsen Holding AS | | 2021 |
| C Link Holding AS | Administrative & support | 2021 |
| C R Berges Bokhandel AS | Wholesale & retail | 2001 |
| C&G Motorcycles AS | Wholesale & retail | 2023 |
| C. Langeland Holding I AS | Professional & scientific | 2018 |
| C.Hansen Holding AS | Construction | 2022 |
| C.R.E.A.M. Holdings AS | | 2026 |
| Cactusglobe AS | Wholesale & retail | 2023 |
| Cadre AS | Professional & scientific | 2020 |
| Cadre Elvekraft 2 AS | Energy | 2023 |
| Cadre Elvekraft AS | Energy | 2022 |
| Cadre Group AS | Energy | 2022 |
| Cadre Invest AS | Energy | 2021 |
| Cadre Ppa 1 AS | Construction | 2023 |
| Caetek AS | Information & communication | 2022 |
| Cafe Bar Norge AS | Wholesale & retail | 2024 |
| Cafe Verftet AS | Hospitality | 1981 |
| Cage Eiendom AS | Real estate | 2022 |
| Cage Holding AS | Real estate | 2012 |
| Cahego Holding AS | Wholesale & retail | 2020 |
| Cajeiko AS | Wholesale & retail | 2020 |
| Caleco Holding AS | Financial services | 2018 |
| Calk Eiendom AS | Real estate | 2024 |
| Calk Holding AS | Professional & scientific | 2023 |
| Calla AS | Wholesale & retail | 2013 |
| Cameron Innovation AS | | 2022 |
| Cami Invest AS | Real estate | 2005 |
| Camilla Invest AS | | 2024 |
| Camillas Blomsterdesign AS | Wholesale & retail | 2014 |
| Camillas Catering AS | Hospitality | 2014 |
| Camillo Bastrup AS | Wholesale & retail | 2019 |
| Camino Cacao AS | Wholesale & retail | 2024 |
| Camo Holding AS | Financial services | 2008 |
| Campino 2 AS | | 2025 |
| Campino Pizza KRS AS | Hospitality | 2024 |
| Campitor AS | Real estate | 2005 |