| DN Consulting AS | Veavågen | 2025 |
| Dna Events AS | Oslo | 2012 |
| Dna Tracer Technologies AS | Oslo | 2012 |
| DNB Carnegie Business Management AS | Oslo | 2017 |
| DNC AS | Lommedalen | 2015 |
| DND Interventions Limited | Angus Dd10 9Ld Scotland | 2020 |
| Dnda AS | Drøbak | 2017 |
| DNN Holding AS | Fiskarstrand | 2024 |
| Dno Mena AS | Oslo | 2011 |
| Dns-Consulting AS | Oslo | 2020 |
| Dnspuls AS | Drammen | 2019 |
| DNV Aquaculture and Ocean Health AS | Sistranda | 2018 |
| DNV AS | Høvik | 1988 |
| DNV Australia Pty Limited | Au-2060 North Sydney Nsw | 2015 |
| DNV Business Assurance B.V. | Nl-2994 Lb Barendrecht | 2024 |
| DNV Business Assurance Group AS | Høvik | 2009 |
| DNV Business Assurance Norway AS | Høvik | 1990 |
| DNV Business Assurance Services UK Limited | London Se1 9Ql England | 2018 |
| DNV Business Assurance Zertifizierung GmbH | De-45329 Essen | 2019 |
| DNV China Company Limited | Shanghai | 2011 |
| DNV Classificacao, Certificacao E Consultoia Brasil Ltda | Br-20090-010 Brazil | 2024 |
| DNV Czech Republic S.R.O. | Cz-16000 Prague | 2012 |
| DNV Denmark | Dk-2900 Hellerup | 2011 |
| DNV Energy Insights USA Inc. | Texas Tx 77449 | 2020 |
| DNV Energy USA Inc. | Katy Tx 77449 | 2023 |
| DNV Finland OY AB | Fi-02150 Espoo | 2017 |
| DNV Gemi Siniflandirma Enerji Mühendislik Hizm Ltd Sti | Tr-34732 Istanbul | 2017 |
| DNV GL International SDN BHD | My-50450 Kuala Lumpur Jalan Pinang | 2017 |
| DNV GL South Africa (Pty) Ltd | Høvik | 2014 |
| DNV GL USA, Inc. | 77449 Katy Texas | 2011 |
| DNV Group AS | Høvik | 1984 |
| DNV Hellas - Classification and Certification Services Single Member Societe Anonyme | Gr-18545 Piraeus | 2010 |
| DNV Inspection AS | Høvik | 2021 |
| DNV Inspection Group AS | Høvik | 2021 |
| DNV Korea Ltd | 100772 Seoul | 2012 |
| DNV Management Consulting Shanghai Limited | Shanghai Pudong | 2013 |
| DNV Maritime Italy S.R.L. | It-20861 Agrate Brianza (Mb) | 2011 |
| DNV Mes India Private Limited | In-400070 Mumbai, Maharashtra | 2025 |
| DNV Netherlands B.V. | 6800Et Arnhem | 2005 |
| DNV Noble Denton Canada Ltd. | St-John'S A1B 0L2 | 2016 |
| DNV Poland SP. Z O.O. | Pl-81-537 Gdynia | 2007 |
| DNV Product Assurance AS | Høvik | 2011 |
| DNV SE | Høvik | 2012 |
| DNV Services UK Limited | Gb-London Se1 9Lq | 2011 |
| DNV Singapore Pte. Ltd. | Sg-118224 Singapore | 2007 |
| DNV Sweden AB | Se-171 54 Solna | 2017 |
| DNV UK Limited | Gb-London Se1 9Lq | 2015 |
| Doa Exploration Limited | Warnminister Wiltshire Ba12 9Hw | 2011 |
| Dob AS | Oslo | 2006 |
| Dobbel Applaus AS | Oslo | 2026 |
| Dobbel J Reklamebyrå AS | Trondheim | 1997 |
| Dober AS | Oslo | 2012 |
| Dobis P.R. AS | Trondheim | 2024 |
| Dobloug & Ruiz Veterinærtjenester AS | Vang På Hedmarken | 2025 |
| Dobrowen AS | Oslo | 2022 |
| Docent Rådgivning AS | Stavanger | 2023 |
| Dock Innovations AS | Nesøya | 2022 |
| Dockflow AS | Tananger | 2026 |
| Docklands AS | Tromsø | 2016 |
| Docklands Production AS | Tromsø | 2007 |
| Doew Norway AS | Tau | 2026 |
| Dof Erstatningssøksmålet AS | Sarpsborg | 2024 |
| Dog Stopper AS | Skien | 2023 |
| Doggovoggo Holding AS | Bergen | 2022 |
| Dogleg AS | Oslo | 2023 |
| Dogsafe AS | Nøtterøy | 2017 |
| Dogtor Invest AS | Oslo | 2022 |
| Dogwine AS | Rådal | 2023 |
| Dogwine Rebel Consulting AS | Rådal | 2025 |
| Dohmeyer NV | 9090 Melle | 2011 |
| Dokfoto AS | Oslo | 2022 |
| Dokino AS | Vormsund | 2022 |
| Dokkadeltaet Nasjonale Våtmarkssenter AS | Odnes | 2008 |
| Dokumentert AS | Oslo | 2013 |
| Dokumentsenter AS | Steinkjer | 2005 |
| Dokun AS | Oslo | 2026 |
| Dolfin AS | Fevik | 2025 |
| Dolimov Agency AS | Nannestad | 2025 |
| Dollarosa (SL) Ltd Nuf | Sl-Sierra Leone | 2026 |
| Dolly Kutte AS | Greåker | 2018 |
| Dollybird Retro | Se-632 30 Eskilstuna | 2013 |
| Dolos Signatursystemer AS | Oslo | 2026 |
| Dolphin Geophysical Pte Ltd | Sg-Singapore 408942 | 2011 |
| Dolphin Ior AS | Oslo | 2012 |
| Dolphin Retail Service AS | Oslo | 2019 |
| Dolphitech 2.0 AS | Gjøvik | 2021 |
| Dolphitech AS | Oslo | 2009 |
| Dolverhin Asalivator Holding AS | Oslo | 2022 |
| Dolverhin Holding AS | Oslo | 2008 |
| Dom Rago Consultancy AS | Fyllingsdalen | 2012 |
| Domaas AS | Oslo | 2018 |
| Dombestein Consulting AS | Kolltveit | 2015 |
| Dombås Veterinærkontor AS | Dombås | 2014 |
| Domenefabrikken Ba | Mjølkeråen | 2007 |
| Dominic Gorham Productions AS | Oslo | 2012 |
| Dominican Music Da | Oslo | 2008 |
| Dominis Invest AS | Nesodden | 2013 |
| Domino's Pizza Distribution LLC | Us - Michigan 48106 | 2019 |
| Domsta Nord | Lt-78284 Siauliai | 2018 |
| Don Lawrence Arkitekt AS | Oslo | 2015 |