| Dronninglunden AS | Real estate | 2017 |
| Dronninglunden FBK AS | Real estate | 2021 |
| Dronoid AS | Arts & recreation | 2024 |
| Drop Holding AS | Professional & scientific | 2017 |
| Drop Service AS | Transport & logistics | 2024 |
| Dropkick AS | Professional & scientific | 2016 |
| Dropout Media Norway AS | Professional & scientific | 2026 |
| Drops AS | Administrative & support | 2021 |
| Drops Design AS | Wholesale & retail | 1983 |
| Drops Holding AS | Wholesale & retail | 2005 |
| Drops Logistics AS | Wholesale & retail | 2009 |
| Dropsfabrikken AS | Wholesale & retail | 2015 |
| Droptable AS | | 2016 |
| Drotninghaug Forvaltning AS | Real estate | 2025 |
| Drottin AS | Information & communication | 2018 |
| Drowzee AS | Professional & scientific | 2018 |
| DRS Holding AS | Real estate | 2010 |
| Drtid Holding AS | Real estate | 2020 |
| Drubion AS | | 2021 |
| Drueclasen AS | Education | 2024 |
| Drueklasen AS | Real estate | 1998 |
| Drug Discovery Laboratory AS | Professional & scientific | 1995 |
| Drugis AS | | 2024 |
| Druidenes Hus Oslo SA | Real estate | 1981 |
| Druuusers AS | Wholesale & retail | 2022 |
| DRV 89B Ans | Real estate | 1991 |
| Dry Eye Media AS | Information & communication | 2015 |
| Dry Holdings AS | | 2022 |
| Dry Invest AS | | 2022 |
| Dryas AS | | 2026 |
| Dryhill Studio AS | Information & communication | 2025 |
| Dryhire AS | Administrative & support | 2025 |
| Drypnir AS | | 2019 |
| Dryskin AS | Manufacturing | 2018 |
| DRZ Invest AS | | 2017 |
| Dräger Norge AS | Wholesale & retail | 1984 |
| Dråpe Energi AS | Energy | 2021 |
| Dråpe Entreprenør AS | Construction | 2017 |
| Dråpe Music Da | Arts & recreation | 2013 |
| Dråper AS | Professional & scientific | 2021 |
| Dråpevin AS | Wholesale & retail | 2024 |
| Drøbacchus AS | Wholesale & retail | 1996 |
| Drøbak Hageby AS | Real estate | 2018 |
| Drøbak Invest AS | Real estate | 1994 |
| Drøbak Invest Holding AS | Real estate | 2005 |
| Drøbak Omsorgssenter AS | Real estate | 2016 |
| Drøbakveien 14 Og 18 Eiendom AS | Real estate | 2020 |
| Drøjsbjerg AS | Health & social care | 2012 |
| Drømmebarn AS | Wholesale & retail | 2016 |
| Drømmeblomster AS | Administrative & support | 2024 |
| Drømmefabrikken AS | Professional & scientific | 2002 |
| Drømmefakultetet AS | Arts & recreation | 2025 |
| Drømmefanger AS | Wholesale & retail | 2022 |
| Drømmeforhold AS | | 2022 |
| Drømmehjem AS | Real estate | 2020 |
| Drømmekjøkkenet Alnabru AS | Wholesale & retail | 2012 |
| Drømmekjøkkenet Prosjekt AS | Wholesale & retail | 2011 |
| Drømmekjøkkenet Skøyen AS | Wholesale & retail | 2013 |
| Drømmene AS | Administrative & support | 2021 |
| Drømmereiser AS | Administrative & support | 2009 |
| Drømmetank AS | | 2024 |
| Drømtorp AS | Real estate | 2018 |
| DS Bidco AS | Information & communication | 2024 |
| DS Business Development AS | Professional & scientific | 2023 |
| DS Byggpartner AS | Construction | 2014 |
| DS Capital AS | Financial services | 2017 |
| DS Holdco AS | Information & communication | 2024 |
| DS Holding AS | Wholesale & retail | 2016 |
| DS Invest 2024 AS | Real estate | 2013 |
| DS Rørlegger AS | Construction | 2017 |
| DS Smith Packaging Sweden AB Nuf | Wholesale & retail | 2012 |
| Ds-Fix AS | Construction | 2013 |
| Dsa Transport AS | Transport & logistics | 2019 |
| Dsasta AS | Financial services | 2007 |
| Dsatlantis AS | Information & communication | 2020 |
| DSB Drift AS | Professional & scientific | 2026 |
| DSB Holding AS | | 2020 |
| DSC Bygg AS | Construction | 2020 |
| DSD Explore AS | Professional & scientific | 2000 |
| DSF Holding AS | | 2025 |
| Dsi Systemer AS | Wholesale & retail | 1987 |
| Dsign Development Ans | Professional & scientific | 2004 |
| DSJ Holding AS | | 2021 |
| DSK Beauty Clinic AS | Health & social care | 2021 |
| DSK Capital AS | Professional & scientific | 2025 |
| DSS Diplomatic Security Service AS | Administrative & support | 2023 |
| DSS Engros AS | Wholesale & retail | 2022 |
| DSS Silkeborg A/S V/Pwc Skatterådgivere AS | Wholesale & retail | 2011 |
| DST Holding AS | | 2021 |
| Dst-Chemicals AS | Wholesale & retail | 2021 |
| DSV Air & Sea AS | Transport & logistics | 2001 |
| DT Capital AS | | 2026 |
| DT Investments AS | | 2026 |
| Dt&Shop Norge AS | Wholesale & retail | 2010 |
| DTL AS | Professional & scientific | 2020 |
| DTR Invest AS | | 2024 |
| DTW Holding AS | | 2022 |
| Du Cap Film & TV AS | Information & communication | 2022 |
| Du Er Kreativ AS | Hospitality | 2025 |
| Du Og Jeg Og Vi 2-3-4 SA | Arts & recreation | 2020 |