| Consenso AS | Wholesale & retail | 2005 |
| Consilia Beauty AS | Other services | 2023 |
| Consilio Kommunikasjon AS | Professional & scientific | 1994 |
| Contektor AS | Professional & scientific | 2012 |
| Contrall AS | Professional & scientific | 2025 |
| Contus Økonomi AS | Professional & scientific | 2014 |
| Copia AS | Information & communication | 2005 |
| Corpus Fysioterapi AS | Health & social care | 2023 |
| Cosmo Trend AS | Wholesale & retail | 2003 |
| Count & Convert AS | Information & communication | 2019 |
| CR Interiør AS | Wholesale & retail | 2012 |
| Craftsmanship Holding AS | Hospitality | 2015 |
| Cramer Drift AS | Professional & scientific | 2006 |
| Createam AS | Professional & scientific | 2021 |
| CREW2YOU AS | Real estate | 2026 |
| CTK AS | | 2021 |
| Cto Invest AS | | 2020 |
| CWC Invest AS | Financial services | 2017 |
| Cycle Start AS | Manufacturing | 2020 |
| Cypod Solutions AS | Professional & scientific | 2019 |
| D C Consult Ans | Wholesale & retail | 1991 |
| D/S Victor AS | Hospitality | 2024 |
| Dabster AS | Real estate | 2020 |
| Dace Invest Limited Nuf | Professional & scientific | 2005 |
| Dag Og Eva Mathisen Da | Real estate | 2006 |
| Dagusiki Holding AS | Financial services | 2008 |
| Dali Holding AS | Real estate | 2005 |
| Dampejordet Holding AS | Real estate | 2005 |
| Dancity Invest AS | | 2023 |
| Dans Og Fritid AS | Wholesale & retail | 2012 |
| Dansebakken AS | Real estate | 1994 |
| Datamentor AS | Information & communication | 1991 |
| Dbet AS | Professional & scientific | 2023 |
| DC Consult Ans Randi Dolven Og Bjørn Behrentz | Information & communication | 1991 |
| De Arte Gymnastica AS | Wholesale & retail | 2020 |
| De Lange Eiendom AS | Real estate | 2005 |
| De Lange Holding AS | Financial services | 2012 |
| Debet Finans AS | Administrative & support | 2020 |
| Deepak Holding AS | Hospitality | 2012 |
| Dekk Partner AS | Wholesale & retail | 1994 |
| Dekklaget AS | Administrative & support | 2023 |
| Dekkmesteren Tønsberg AS | Wholesale & retail | 2000 |
| Dekktech AS | Wholesale & retail | 2021 |
| Dekorativ Designs International Ans | Construction | 2003 |
| Delikatessen Ans Karin Og Tore Bjørnsvik | Hospitality | 1990 |
| Delta IT AS | Professional & scientific | 2025 |
| Den Lille Kokeboka AS | Professional & scientific | 2024 |
| Dentaverse AS | Real estate | 2021 |
| Descending AS | Real estate | 2022 |
| Det Gylne Galleri AS | Wholesale & retail | 2023 |
| DGH Tønsberg AS | Wholesale & retail | 2024 |
| Dhaliwal AS | Real estate | 2017 |
| Dhaliwal Eiendom AS | Real estate | 2018 |
| DHW Holding AS | Professional & scientific | 2024 |
| Diatec AS | Manufacturing | 1985 |
| Digiref AS | Information & communication | 2012 |
| Digital Paper AS | Real estate | 2023 |
| Din Fastlege I Tønsberg AS | Health & social care | 2020 |
| Din Handel AS | Real estate | 2024 |
| Din Handel Barn AS | Wholesale & retail | 2024 |
| Disma AS | Wholesale & retail | 2016 |
| Ditech Eiendom AS | Real estate | 2007 |
| Diva Drift Niels Otto Wold Og Thomas Ness Da | Hospitality | 1991 |
| DK Company Online AS | Wholesale & retail | 2009 |
| DKC Norway AS | Wholesale & retail | 2003 |
| DKV Norway AS | Wholesale & retail | 2004 |
| DKV Retail Norway AS | Wholesale & retail | 2006 |
| Dockside Næring AS | Real estate | 2012 |
| Dockup AS | Wholesale & retail | 2026 |
| Doppler Film AS | Information & communication | 2013 |
| Doris Invest AS | Real estate | 2020 |
| Doxis Nordics AS | Information & communication | 2021 |
| DP Tønsberg AS | Hospitality | 2021 |
| DR Blystad AS | Health & social care | 2014 |
| DR. Hexebergs Klinikk AS | Health & social care | 2010 |
| Drange Byggservice AS | Construction | 2012 |
| Drift Holding AS | | 2024 |
| Drive Development AS | Professional & scientific | 2013 |
| Driverent AS | Administrative & support | 2013 |
| Driveshield AS | Information & communication | 2024 |
| Drop-In Legene AS | Health & social care | 2018 |
| Drude Musikk AS | Arts & recreation | 2025 |
| DS Kysten AS | Transport & logistics | 1970 |
| Dui Clinique AS | Wholesale & retail | 1998 |
| Dæhli Bakken Holding AS | | 2026 |
| Dörrich Design AS | Wholesale & retail | 2022 |
| Døvleveien 23-25 AS | Real estate | 1988 |
| Døvleveien AS | Real estate | 2013 |
| E. Karlsen Stenhuggeri AS | Manufacturing | 2024 |
| E.G. Innovation & Management AS | | 2022 |
| E18 Eiendomsselskab AS | Real estate | 2010 |
| E7 Eiendom AS | | 2025 |
| E7 Invest AS | | 2025 |
| Ea Næringsmegling AS | Real estate | 2024 |
| Easysales Transport & Logistikk Ans | Transport & logistics | 2021 |
| Eccco Regnskap AS | Professional & scientific | 2023 |
| Eco Lovers AS | Professional & scientific | 2021 |
| Edalio AS | Information & communication | 2026 |
| Eeh Eiendom AS | Real estate | 2026 |
| Effektmakeren AS | Arts & recreation | 2013 |