| Durable Scandinavia AB Nuf | Wholesale & retail | 2024 |
| Durakovic Invest AS | | 2026 |
| Durango Sport AS | Real estate | 1995 |
| Durantum Holding AS | | 2024 |
| Duravit Norge Nuf | Wholesale & retail | 2010 |
| Durbeck Holding AS | Real estate | 2021 |
| Duri Fagprofil AS | Wholesale & retail | 1979 |
| Durieta Invest AS | Information & communication | 2015 |
| Durimente AS | | 2019 |
| Durmaz AS | Hospitality | 2025 |
| Durrani Transport AS | Transport & logistics | 2016 |
| Durudveien 37/39 AS | Real estate | 1993 |
| Dus Arkitekter AS | Professional & scientific | 2023 |
| Dus Frisør AS | Other services | 1997 |
| Dus Og Sus AS | Real estate | 2003 |
| Dusavik Næringspark Eiendom Ans | Real estate | 1998 |
| Dusavika Eiendomsinvest AS | Real estate | 2009 |
| Dusavika Park AS | Real estate | 2007 |
| Dusavika Park Holding AS | Real estate | 2005 |
| Dusty Bottoms AS | Hospitality | 2018 |
| Duties AS | Professional & scientific | 2015 |
| Duties Holding AS | Professional & scientific | 2022 |
| Dutta Holding AS | | 2022 |
| Dutte Invest AS | Real estate | 2021 |
| Duus Consulting AS | Real estate | 2021 |
| Duus Invest AS | Real estate | 2017 |
| Duvholt Invest AS | | 2021 |
| Duwel Norway AS | Wholesale & retail | 2014 |
| Dux Ducis AS | | 2012 |
| Dux Holding AS | | 2023 |
| Duy Q. Ngo AS | Wholesale & retail | 2014 |
| Duymaz AS | Wholesale & retail | 2020 |
| DV Consulting AS | Professional & scientific | 2018 |
| DV Enterprise AS | Hospitality | 2018 |
| DV Holding AS | | 2025 |
| Dvale AS | Information & communication | 2026 |
| Dvalencia AS | Information & communication | 2025 |
| Dvalencia Holding AS | Information & communication | 2025 |
| Dvb-Holding AS | | 2021 |
| Dvergfossen Kraft AS | Energy | 2018 |
| Dvergmaal Holding AS | Financial services | 2024 |
| Dvergsdal Consulting AS | Professional & scientific | 2011 |
| Dvergsnestangen Eiendom Invest AS | Real estate | 2007 |
| Dvergsnestangen Lagereiendom Invest AS | Real estate | 2015 |
| Dversi AS | Information & communication | 2026 |
| Dvest Holding AS | | 2023 |
| DVJ Insights AS | Professional & scientific | 2025 |
| DVM Eiendom AS | Transport & logistics | 2023 |
| DVM Global AS | Construction | 2023 |
| DVS AS | Wholesale & retail | 2024 |
| DVS Holding AS | Professional & scientific | 2021 |
| DVT AS | Wholesale & retail | 2017 |
| DWB Holding AS | | 2018 |
| Dwi AS | Administrative & support | 2017 |
| DWK Holding AS | | 2025 |
| DWK Offshore AS | Administrative & support | 2024 |
| Dyade-Forlag Inger Halvorsen | Information & communication | 1995 |
| Dybdahl Holding AS | Real estate | 2007 |
| Dybdal Capital AS | | 2025 |
| Dybe AS | | 2022 |
| Dybvad Invest AS | | 2020 |
| Dybvig AS | Construction | 1996 |
| Dybvik Holding I AS | Real estate | 2006 |
| Dybwad-Olsen AS | Wholesale & retail | 1980 |
| Dybwadsgynekologene Da | Health & social care | 2016 |
| Dydlands Konsulenttjenester AS | Administrative & support | 2016 |
| Dyfam AS | Real estate | 2005 |
| Dyflin AS | Real estate | 2023 |
| Dykesteen Holding AS | Real estate | 2009 |
| Dyktig Regnskapsfører AS | Professional & scientific | 2022 |
| Dyktig Selskap AS | Transport & logistics | 2018 |
| Dymo Eiendom AS | Real estate | 2006 |
| Dymo Invest AS | Real estate | 2021 |
| Dyna AS | Real estate | 2013 |
| Dyna Fyr AS | Hospitality | 2001 |
| Dynabyte Advisory AS | Information & communication | 2019 |
| Dynabyte Consulting AS | Information & communication | 2009 |
| Dynabyte Invest AS | Real estate | 2018 |
| Dynabyte Projects AS | Professional & scientific | 2019 |
| Dynabyte Risk Management AS | Professional & scientific | 2021 |
| Dynacap Norway AS | Professional & scientific | 2025 |
| Dynacon AS | Information & communication | 2020 |
| Dynacy AS | | 2020 |
| Dynamic AS | Information & communication | 2009 |
| Dynamic Bytes AS | Information & communication | 2018 |
| Dynamic Capital AS | Professional & scientific | 2017 |
| Dynamic Motion AS | Administrative & support | 2019 |
| Dynamic Performance AS | Wholesale & retail | 2024 |
| Dynamic Project Management AS | | 2000 |
| Dynamic Services AS | Information & communication | 2023 |
| Dynamic Solutions AS | Information & communication | 2000 |
| Dynamic Solutions International AS | Information & communication | 2012 |
| Dynamic World Solution AS | Construction | 2015 |
| Dynamis AS | Real estate | 2019 |
| Dynamisk Forandring AS | Health & social care | 2015 |
| Dynaplan AS | Information & communication | 2004 |
| Dynasmith AS | Financial services | 2016 |
| Dynatos AS | Information & communication | 2018 |
| Dynatrace AS | Information & communication | 1991 |
| Dynea Holding AS | Real estate | 2013 |