| De Du Veit AS | Oslo | 2023 |
| De Heldige AS | Sarpsborg | 2016 |
| De Unevnelige Da | Oslo | 2019 |
| De Utvalgte AS | Nesodden | 2010 |
| Dead Movie Animals Da | Oslo | 2024 |
| Deadeye Navigator Da | Oslo | 2019 |
| Deadline Event AS | Sortland | 2015 |
| Deathcrush Da | Oslo | 2011 |
| Deathfjord Da | Svelgen | 2026 |
| Debut Holding AS | Oslo | 2005 |
| Decathlon Cycling Team | Fr-73290 La Motte-Servolex | 2024 |
| Deception Da | Oslo | 2022 |
| Deconform AS | Kristiansand S | 2019 |
| Ded Dead Dedemption AS | Oslo | 2026 |
| Dedikert AS | Minnesund | 2022 |
| Deed AS | Berger | 2013 |
| Deep Sea Music and Management AS | Trondheim | 2016 |
| Deepfrost Management AS | Trondheim | 2016 |
| Deja-Vu Norway SA | Askim | 2020 |
| Delbart Da | Tromsø | 2025 |
| Delillustrates AS | Kristiansand S | 2022 |
| Delselius & You AB Nuf | Se-131 52 Nacka Strand | 2025 |
| Delta Iform AS | Karasjok | 2014 |
| Delta Lyd Og Lys AS | Verdal | 2024 |
| Delta Rights AS | Lillehammer | 2020 |
| Deludo Da | Oslo | 2005 |
| Demabe AS | Oslo | 2022 |
| Demningen AS | Fjell | 2012 |
| Den Du Trenger AS | Bjørkelangen | 2024 |
| Den Gode Tonen AS | Ålgård | 2022 |
| Den Mangfaldige Scenen AS | Oslo | 2013 |
| Den Norske Beatlesfestivalen AS | Bergen | 2022 |
| Den Norske Filmfestivalen AS | Haugesund | 1987 |
| Den Norske Matfestivalen I Ålesund AS | Ålesund | 1999 |
| Den Norske Opera & Ballett AS | Oslo | 1957 |
| Den Rosa Fabrikken AS | Oslo | 2023 |
| Den Ved Siden Av Bowiekniv AS | Oslo | 2013 |
| Denebola Live AS | Lysekloster | 2023 |
| Denlangu Muay Thai AS | Lillestrøm | 2022 |
| Denstad Consulting AS | Trondheim | 2016 |
| Dentalcompagniet Eiendom AS | Narvik | 1997 |
| Depmes AS | Lørenskog | 2019 |
| Der Media AS | Bergen | 2021 |
| Descamisado AS | Rådal | 2022 |
| Desertfest Oslo AS | Oslo | 2021 |
| Desk AS | Kolsås | 2021 |
| Desk Stories AS | Nesodden | 2025 |
| Desken AS | Oslo | 2002 |
| Destinasjon Oppdal AS | Øyer | 2011 |
| Destinasjon Torghatten AS | Brønnøysund | 2026 |
| Det Andre Teatret AS | Oslo | 2010 |
| Det Annet Kjønn Da | Stavanger | 2022 |
| Det Er Meg Det Kommer an På AS | Duken | 2020 |
| Det Fronske Kompani Da | Vinstra | 2016 |
| Det Gode Selskab AS | Oslo | 2016 |
| Det Grønne Skafferi AS | Aukra | 2019 |
| Det Norske Fosse-Kompaniet AS | Snertingdal | 2019 |
| Det Norske Ibsenkompaniet AS | Gjerdrum | 2010 |
| Det Norske Ibsenkompaniet Produksjoner AS | Gjerdrum | 2023 |
| Det Norske Mikroteatret AS | Oslo | 2015 |
| Det Serveres AS | Oslo | 2022 |
| Det Skjer I Kragerø Profil Og Event AS | Kragerø | 2011 |
| Det Stille Teateret Ans | Tranby | 2014 |
| Det Tropiske Grammofonselskab AS | Kragerø | 2016 |
| Det Var En Gang AS | Oslo | 2022 |
| Det Vestnorske Teateret AS | Bergen | 1985 |
| Dette Teateret Da | Oslo | 2024 |
| Deuce AS | Sandnes | 1994 |
| Deutero AS | Lørenskog | 2002 |
| Deux AS | Fyllingsdalen | 2005 |
| Devi Design AS | Vinje | 2024 |
| Dewangen-Produksjoner AS | Oslo | 2022 |
| Dextra Artes AS | Oslo | 1986 |
| Dextra Musica AS | Oslo | 2005 |
| DHK Invest 2 AS | Drammen | 2022 |
| Dialog Og Samfunn SA | Bodø | 2018 |
| Dictis Press AS | Oslo | 2026 |
| Dide AS | Bodø | 2026 |
| Die Schnapskapelle Ans | Narvik | 1995 |
| Dietrich Johannes Buder Orgelverksted AS | Nesttun | 2012 |
| Dig Deeper Norway Da | Oslo | 2010 |
| Diger Skjerm AS | Mo I Rana | 2026 |
| Digital Media Group AS | Oslo | 2023 |
| Digital Media Group Kultur AS | Oslo | 2023 |
| Dignycare AS | Sola | 2026 |
| Digresjon Ans | Oslo | 2017 |
| Digt Og Forbannet Løgn AS | Oslo | 2012 |
| Dikterstua AS | Mo I Rana | 2020 |
| Din Arrangør AS | Sande I Vestfold | 2016 |
| Din Jakt AS | Skjold | 2008 |
| Din Russetid AS | Sandnes | 2018 |
| Din Våte Drøm Da | Oslo | 2025 |
| Dindal Sameie Ans | Oppdal | 1999 |
| Dingemoen Arena AS | Dale I Sunnfjord | 2018 |
| Diode AS | Oslo | 2007 |
| Dirty Girls AS | Vennesla | 2017 |
| Dirty Old Town Aktiesælskab AS | Kristiansand S | 2010 |
| Discobandet Ans | Drammen | 2019 |
| Discover Lofoten AS | Kabelvåg | 2018 |
| Diskord Da | Lierskogen | 2025 |