| Bøkestredet Holding AS | Real estate | 2020 |
| Bøketre AS | Professional & scientific | 2020 |
| Børre Svindal Larsen Totalentreprenør AS | Construction | 2020 |
| C Halvorsen Invest AS | Real estate | 2020 |
| C. Dahl Holding AS | Real estate | 2016 |
| C2 Næringspark AS | Real estate | 2022 |
| C2B Kamerateknikk & Videoproduksjon AS | Information & communication | 2022 |
| C3 Næringspark AS | Real estate | 2022 |
| Ca Investo AS | Real estate | 2005 |
| Cairn Invest AS | | 2024 |
| Calas AS | Wholesale & retail | 1983 |
| Caleo Holding AS | Wholesale & retail | 2004 |
| Camah AS | Professional & scientific | 2019 |
| Camelot Escape Room AS | Information & communication | 2019 |
| Camilla Kristiansen Vogt AS | Wholesale & retail | 2023 |
| Camp Snacks AS | Wholesale & retail | 2023 |
| Camping Og Fritid AS | Wholesale & retail | 2022 |
| Canaccas Invest Da | Financial services | 2006 |
| Canon Business Center Vestfold Telemark AS | Wholesale & retail | 1987 |
| Car-O-Liner Norge AS | Wholesale & retail | 2013 |
| Carat Eiendom AS | Real estate | 2009 |
| Carat Eiendomsforvaltning AS | Administrative & support | 1999 |
| Caremed AS | Wholesale & retail | 2014 |
| Carl M Lundh Norge Filial Av Carl M Lundh AB, Sverige Nuf | Wholesale & retail | 2014 |
| Cartech AS | Other services | 1997 |
| Carwash Larvik AS | Other services | 2014 |
| Cass Holding AS | | 2025 |
| Cass II AS | Real estate | 2025 |
| Catering and Restaurant Services AS | Real estate | 1985 |
| Cba Infra AS | Administrative & support | 2002 |
| CBG AS | | 2025 |
| Celep AS | Hospitality | 2016 |
| Celeste Holding AS | Financial services | 2018 |
| Central Eiendom AS | Real estate | 1995 |
| Cesa-Invest AS | | 2021 |
| Challenge Me AS | Professional & scientific | 2017 |
| Charta Prosjekt Limited Nuf | Professional & scientific | 2006 |
| Chemical Compass AS | Professional & scientific | 2025 |
| Chicoman AS | | 2012 |
| Choice-Recruitment AS | Administrative & support | 2023 |
| Chris a Lindhjem AS | Transport & logistics | 2023 |
| Chris Hammerkvist AS | Wholesale & retail | 2008 |
| Christoffersen Transport AS | Transport & logistics | 1989 |
| Chwol 752 Holding AS | Other services | 2023 |
| Cirrus Holding AS | Financial services | 2005 |
| Ckokkersvold Holding AS | | 2020 |
| Clarksgt. 6 AS | Real estate | 2007 |
| Classic Eiendom AS | Real estate | 1988 |
| Classic Sport Car AS | Wholesale & retail | 2020 |
| Clockwork Ekspress AS | Transport & logistics | 2023 |
| Cloud 247 AS | Information & communication | 2021 |
| Cmmi Invest AS | Information & communication | 2020 |
| Coast Comfort Invest Ans | | 1995 |
| Coat AS | | 2025 |
| Coat Holding AS | | 2025 |
| Communication Distribution AS | Professional & scientific | 2003 |
| Concrete Consulting AS | Professional & scientific | 2018 |
| Consul-Tech AS | Real estate | 2015 |
| Containerservice AS | Administrative & support | 1992 |
| Containerservicen Transport AS | Administrative & support | 2000 |
| Contaxt AS | Real estate | 2013 |
| Cool Down AS | Wholesale & retail | 2020 |
| Cornerlarvik AS | Hospitality | 2024 |
| Cos Dagligvare AS | Wholesale & retail | 2010 |
| Cravings AS | Manufacturing | 2022 |
| Cro Foldvik Eiendom AS | Real estate | 2021 |
| Crossbutikken AS | Wholesale & retail | 2016 |
| CRT Holding AS | Financial services | 2015 |
| CS Group AS | Wholesale & retail | 2023 |
| CTC Invest AS | Wholesale & retail | 2005 |
| Cuescore International AS | Information & communication | 2016 |
| D Og S Holding AS | | 2025 |
| D. Schmitt GmbH & Co. KG | Professional & scientific | 2005 |
| Dag Astor Nielsen Invest AS | Real estate | 1986 |
| Dahlen AS | | 2024 |
| Damgården AS | Education | 2017 |
| Dampejordet Eiendom AS | Real estate | 1997 |
| Damskog Hovet AS | Professional & scientific | 2017 |
| Danebu Eiendomsutvikling AS | Real estate | 2022 |
| Data Hjelp for Privat Personer Ltd Nuf | Other services | 2009 |
| Data Reset Solutions AS | Information & communication | 2025 |
| Dataregnskap AS | Professional & scientific | 2003 |
| Dava Foods Norway AS | Manufacturing | 1987 |
| Dava Foods Property Norway AS | Manufacturing | 2007 |
| Dawn Eiendom AS | Real estate | 2025 |
| Decibelprodukter AS | Wholesale & retail | 1990 |
| Defender Holding AS | | 2022 |
| Dekkspesialisten Larvik AS | Wholesale & retail | 1996 |
| Demotec AS | Construction | 2012 |
| Den Norske Kryddermølle AS | Manufacturing | 2021 |
| Der! Eiendom AS | Real estate | 2010 |
| Det Kreative Hjørnet SA | Other services | 2018 |
| Devosec AS | Information & communication | 2020 |
| DG Eiendom AS | Real estate | 2023 |
| DH Gruppen AS | Wholesale & retail | 2023 |
| DHS AS | Wholesale & retail | 2020 |
| Diego Holding AS | | 2024 |
| Digital Design Distribution AS | Professional & scientific | 1991 |
| Digitalsenteret AS | Wholesale & retail | 2003 |
| Din Kompetanse AS | Education | 2022 |