| Dermalounge AS | Health & social care | 2014 |
| Dermanord AS | Health & social care | 2025 |
| Dermanuka AS | Other services | 2020 |
| Dermatect AS | Information & communication | 2026 |
| Dermatvillingene AS | Other services | 2024 |
| Dertour Nordic AB Nuf | Administrative & support | 1998 |
| Desa Nor Express AS | Transport & logistics | 2016 |
| Desa Personal AS | Transport & logistics | 2017 |
| Desatascos Low Cost Cantabria Limited | Wholesale & retail | 2025 |
| Descartes Technologies AS | Information & communication | 2022 |
| Describeit AS | Professional & scientific | 2025 |
| Desember AS | Professional & scientific | 2018 |
| Deseo AS | Professional & scientific | 2012 |
| Desertfest Oslo AS | Arts & recreation | 2021 |
| Desi Catering AS | Hospitality | 2024 |
| Desi Holding AS | | 2021 |
| Desi Kjøkken AS | Hospitality | 2018 |
| Desidert AS | Information & communication | 2014 |
| Design & Montasje AS | Construction | 2018 |
| Design Build AS | Professional & scientific | 2020 |
| Design by Living AS | Professional & scientific | 2026 |
| Design by Stavem AS | Information & communication | 2015 |
| Design Bygg Og Malertjenester Nuf | Construction | 2022 |
| Design Classics AS | Wholesale & retail | 2025 |
| Design Colour AS | Construction | 2012 |
| Design Elements AS | Construction | 2016 |
| Design House AS | Wholesale & retail | 2020 |
| Design House Oslo AS | Professional & scientific | 2000 |
| Design House Stockholm AS | Wholesale & retail | 2015 |
| Design Hub AS | Information & communication | 2025 |
| Design International AS | Wholesale & retail | 1990 |
| Design Invest AS | | 2020 |
| Design Matters AS | Professional & scientific | 2021 |
| Design Møbler Norge AS | Wholesale & retail | 2016 |
| DESIGN2YOU AS | Professional & scientific | 2016 |
| Designaid AS | Professional & scientific | 2012 |
| Designated AS | Manufacturing | 1992 |
| Designbad AS | Construction | 2025 |
| Designed by Aps | Administrative & support | 2013 |
| Designer Group Norway AS | Construction | 2020 |
| Designerina AS | Professional & scientific | 2012 |
| Designers Club Ans | Professional & scientific | 2001 |
| Designers Outlet AS | Wholesale & retail | 2018 |
| Designinstituttet AS | Education | 2004 |
| Designit Oslo AS | Professional & scientific | 2006 |
| Designskilt AS | Wholesale & retail | 2017 |
| Designtank Da | Real estate | 2002 |
| Designtime AS | Professional & scientific | 2019 |
| Desimal AS | Professional & scientific | 2010 |
| Desimal Invest AS | | 2024 |
| Desiness AS | Wholesale & retail | 2014 |
| Desired Path AS | Information & communication | 2025 |
| Desitin Arzneimittel GmbH | Wholesale & retail | 1997 |
| Desken AS | Arts & recreation | 2002 |
| Desken Invest AS | Financial services | 2017 |
| Destan AS | Transport & logistics | 2021 |
| Destillare AS | Professional & scientific | 2026 |
| Destination Africa AS | Administrative & support | 2023 |
| Desto AS | Information & communication | 2023 |
| Det Andre Teatret AS | Arts & recreation | 2010 |
| Det Britiske Investeringscompagnie AS | | 1995 |
| Det Er Bælmbar Da | Hospitality | 2019 |
| Det Glutenfrie Verksted AS | Wholesale & retail | 2019 |
| Det Gode Arbeidsliv AS | Education | 2015 |
| Det Gode Bord AS | Hospitality | 2026 |
| Det Gode Bord Kantiner AS | Hospitality | 2026 |
| Det Gode Selskab AS | Arts & recreation | 2016 |
| Det Grønne Kjøkken AS | Hospitality | 2017 |
| Det Gylne Snitt AS | Wholesale & retail | 2014 |
| Det Invest AS | Real estate | 2017 |
| Det Lille AS | Professional & scientific | 1996 |
| Det Lille Konditori Ans | Wholesale & retail | 1990 |
| Det Nordiske Eiendomscompagnie Da | Wholesale & retail | 2016 |
| Det Nordiske Kompaniet AS | Real estate | 2019 |
| Det Norske Brenneri AS | Wholesale & retail | 2011 |
| Det Norske Eiendomscompagnie AS | Real estate | 2006 |
| Det Norske Eiendomsselskap AS | Real estate | 2014 |
| Det Norske Holdingselskab AS | Real estate | 2023 |
| Det Norske Mikroteatret AS | Arts & recreation | 2015 |
| Det Norske Regnskapfører Da | Professional & scientific | 2024 |
| Det Norske Renholdsbyrå AS | Administrative & support | 2005 |
| Det Nye AS Lakkegaten 18 | Real estate | 1947 |
| Det Nye AS Sigurdsgt 16 | Households | 1931 |
| Det Nye Bogstadv 52 AS | Real estate | 1974 |
| Det Nye Pilestredet 63 C-D AS | Real estate | 1972 |
| Det Nye Selskap AS | Hospitality | 2026 |
| Det Serveres AS | Arts & recreation | 2022 |
| Det Skandinaviske Medieselskap AS | Professional & scientific | 2013 |
| Det Søte Liv AS | Professional & scientific | 2015 |
| Det Var En Gang AS | Arts & recreation | 2022 |
| Detach Da | Information & communication | 2007 |
| Detailer Cliairmax AS | Other services | 2025 |
| Detailshop AS | Wholesale & retail | 2020 |
| Detaljer AS | Real estate | 2014 |
| Detaljer.No AS | Wholesale & retail | 2019 |
| Detect Web Da | Information & communication | 2015 |
| Detektor Rekruttering AS | Administrative & support | 2015 |
| Detektor VVS AS | Construction | 2003 |
| Deterklart AS | Wholesale & retail | 2026 |
| Detfolktenker AS | | 2023 |