| Bpe AS | Construction | 2019 |
| Brego AS | Information & communication | 2014 |
| Bremo Invest AS | Financial services | 2011 |
| Brinil Holding AS | Health & social care | 2020 |
| Brio Barn & Lek Center Lagunen AS | Wholesale & retail | 1997 |
| Brio Invest Limited Nuf | Financial services | 2007 |
| Briskebu&Straumen Invest AS | | 2012 |
| BRM Saga Invest AS | | 2025 |
| BRM Saga Prosjekt AS | | 2025 |
| Brosvik Holding AS | Real estate | 2005 |
| Bti AS | Professional & scientific | 2014 |
| Bulder Verksted AS | Manufacturing | 2008 |
| Bustad Invest AS | | 2017 |
| Byggmester Aspenes AS | Construction | 2012 |
| Byggmester Heggland AS | Construction | 1997 |
| Byggmester Valde AS | Construction | 1972 |
| Byrkjeland AS | Financial services | 2017 |
| Bæksler AS | | 2018 |
| Bølge AS | Wholesale & retail | 1988 |
| Bønes Byggservice AS | Construction | 2023 |
| Børrenøse AS | | 2022 |
| C Dahm Maskinforretning AS | Wholesale & retail | 1873 |
| C. Sørheim Invest AS | Construction | 1996 |
| Caa Invest AS | | 2024 |
| Cab AS | Health & social care | 2014 |
| Cacady AS | Real estate | 1916 |
| Caile Capital AS | | 2026 |
| Californie AS | Real estate | 2016 |
| Cambia AS | Professional & scientific | 2022 |
| Camtera AS | Education | 2023 |
| Caneda Capital AS | | 2025 |
| Carsten Søreide AS | Professional & scientific | 2014 |
| Carsten Søreide Consulting Da | Professional & scientific | 2009 |
| Carsten Søreide Regnskap AS | Professional & scientific | 2024 |
| Casa Flores AS | Real estate | 2006 |
| Cashback Bil AS | Wholesale & retail | 2016 |
| Cashew AS | | 2020 |
| Cbjelland Holding AS | Health & social care | 2022 |
| Ceci Invest AS | | 2026 |
| Cedrik AS | | 2000 |
| Centrum Trafikkskole AS | Education | 1986 |
| Centrum Trafikkskole Tilhenger AS | Education | 2019 |
| Certago AS | Manufacturing | 2018 |
| Cesira AS | Professional & scientific | 2025 |
| Chacalil AS | Real estate | 2009 |
| Cheesyfood AS | Hospitality | 2025 |
| Chimaera AS | Professional & scientific | 2006 |
| Chop Holding AS | | 2019 |
| Christian Birkeland Holding AS | Financial services | 2004 |
| Christine Grieg-Lie AS | | 2019 |
| Christopher Nilsen AS | Professional & scientific | 2018 |
| Classic Beauty AS | Other services | 2020 |
| Cleanocean-Farming AS | Agriculture & fishing | 2016 |
| Cliff House AS | Financial services | 2017 |
| CLK Invest AS | Financial services | 2014 |
| CNS Holding AS | | 2024 |
| Cobble Skateboards AS | Wholesale & retail | 2014 |
| Cof Founders AS | | 2025 |
| Coj AS | | 2026 |
| Comtrader AS | Wholesale & retail | 2008 |
| Cookiesbyvindenes AS | Manufacturing | 2020 |
| Cowo AS | Professional & scientific | 2015 |
| Cpoint AS | Professional & scientific | 2004 |
| Cream Invest AS | Financial services | 2018 |
| CS Team AS | Administrative & support | 2023 |
| Csad Ventures AS | Real estate | 2022 |
| Cscj AS | Information & communication | 2023 |
| CSM AS | Real estate | 2005 |
| CT Invest AS | Other services | 2015 |
| CTK Eiendom AS | Real estate | 2013 |
| Cuoto AS | Wholesale & retail | 2020 |
| Curveball AS | Professional & scientific | 2026 |
| CWL Holding AS | Professional & scientific | 2023 |
| D.G Holding AS | | 2021 |
| Dagsvik Invest AS | Information & communication | 2005 |
| Dajanto Invest AS | Financial services | 2014 |
| Dalehavn Holding AS | Real estate | 2026 |
| Dalgård Legetjenester AS | Health & social care | 2026 |
| Darihus Byggservice AS | Construction | 2018 |
| Datatrafikk Consulting AS | Information & communication | 2024 |
| Datatrafikk Holding AS | Information & communication | 2005 |
| DBM Holding AS | Construction | 2019 |
| Dcon AS | Information & communication | 2022 |
| Dda Holding AS | | 2012 |
| Ddad AS | Administrative & support | 2022 |
| Deepwater Invest AS | | 2025 |
| Defibrio AS | Information & communication | 2020 |
| Dekk Og Deler AS | Wholesale & retail | 2011 |
| Dekk Og Deler Import AS | Wholesale & retail | 2015 |
| Delivio AS | Transport & logistics | 2026 |
| Delta AS | Real estate | 1976 |
| Den Syttende AS | | 2021 |
| Descamisado AS | Arts & recreation | 2022 |
| Desom Holding AS | | 2018 |
| Det Røde Huset På Berget Holding AS | | 2021 |
| Det Vestlandske Chili Kompagniet AS | Manufacturing | 2021 |
| Deunge AS | | 2022 |
| Diafragma AS | Health & social care | 2020 |
| Didsiv Holding AS | Real estate | 2018 |
| Digident AS | Wholesale & retail | 2013 |