| Dobstan AS | Dalen | 2023 |
| Docktech AS | Oslo | 2019 |
| Doctor Drywall AS | Sortland | 2021 |
| Doda Malerservice Og Vedlikehold Ans | Klavestadhaugen | 2010 |
| Dokka Blikkenslager AS | Dokka | 2023 |
| Dokka Entreprenør AS | Dokka | 2004 |
| Dokka Entreprenør Eiendom AS | Dokka | 2013 |
| Dokken & Moen Murmesterforretning AS | Lillehammer | 2020 |
| Dokken Bygg Og Anlegg AS | Reinli | 2016 |
| Doktor Gress På Taket AS | Oppdal | 2021 |
| Dolmen & Sønner AS | Ålesund | 1995 |
| Dolomiti Rocce S.R.L. | 32014 Ponte Nelli Alpi (Bl) | 2022 |
| Dom-Bud Wieslawa Matusik Nuf | 33-332 Binczarowa | 2025 |
| Domar Mariusz Mierzejek | Pl-07-430 Myszyniec | 2011 |
| Dombås Maskinstasjon AS | Dombås | 1998 |
| Domden AS | Oslo | 2023 |
| Domin Bygg Entreprenør AS | Kolbotn | 2020 |
| Dominik Dostal | Matrand | 2020 |
| Dominik Patryk Stec AS | Ål | 2012 |
| Dominion Deutschland GmbH | De-40852 Ratingen-Lintorf | 1998 |
| Dominion Global France Nuf | Fr-13016 Marseille | 1996 |
| Dominion Polska SP Zoo | Pl - 44 109 Gliwice | 2015 |
| Dominor Bygg AS | Tennfjord | 2022 |
| Dommersnes & Larsen Ans | Vikebygd | 1994 |
| Dommersnes Og Larsen AS | Karmsund | 1996 |
| Domo Industrie Service GmbH | 44309 Dortmund | 2006 |
| Domus Alfa Norge AS | Lierstranda | 2015 |
| Domus Bygg AS | Hyggen | 2023 |
| Domus Maler Og Mur AS | Hvalstad | 2016 |
| Domus Prosjekt AS | Oslo | 2023 |
| Donar AS | Blomsterdalen | 2002 |
| Doning AS | Jaren | 2021 |
| Donk Eda AS | Edland | 2016 |
| Donvitas Bygg AS | Årnes | 2017 |
| Door Installation Norway AS | Kråkstad | 2017 |
| Doprastav Export & Partner S.R.O. Nuf | 831 04 Bratislava | 2017 |
| Dorholt Maskin AS | Notodden | 2022 |
| Doron Byggtjenester | Oslo | 2005 |
| Dosa Renovasjon AS | Langangen | 2025 |
| Doserne AS | Oslo | 2007 |
| Double a AS | Skien | 2013 |
| Douglas Bygg AS | Skien | 2019 |
| Dove Holding AS | Kristiansand S | 2006 |
| Dovland Anlegg AS | Evje | 2020 |
| Dovre Bygg Entreprenør AS | Orkanger | 2016 |
| Dovre BYGGSERVICE1 AS | Oslo | 2018 |
| Dovre Entreprenør AS | Trondheim | 1987 |
| Dovre Handverk AS | Dovre | 2008 |
| Dovre Holding AS | Trondheim | 2003 |
| Dovre Rør AS | Dovreskogen | 2000 |
| Dovrebygg AS | Dombås | 1993 |
| Downstream Elektro AS | Lonevåg | 2017 |
| Dozer Og Maskindrift AS | Skreia | 2025 |
| Dozerdrift AS | Rødberg | 1978 |
| Dozerdrift Holding AS | Rødberg | 2005 |
| DP Clean Tech Europe Nuf | Oslo | 2011 |
| DP Graveservice AS | Fjørtoft | 2020 |
| DP Kobber- Og Blikkenslager AS | Lommedalen | 2021 |
| DP Mur&Flis AS | Oslo | 2021 |
| DP Nordform AS | Lierstranda | 2026 |
| DP World Logistics High Tech Europe GmbH | De-41468 Neuss | 2017 |
| Dpe Holding AS | Løvenstad | 2019 |
| Dpend Construction AS | Drammen | 2008 |
| Dpend Entreprenør AS | Drammen | 2011 |
| Dpend Gruppen AS | Drammen | 2005 |
| Dpend Management AS | Drammen | 2024 |
| Dpend VVS AS | Drammen | 2005 |
| Dpi-Nord Aps | Isdalstø | 2010 |
| Dpi-Norway AS | Isdalstø | 2010 |
| DPM Decks Nuf | Ee-61508 Tartumaa | 2019 |
| DR Fjellteknikk AS | Frosta | 2026 |
| DR Holding AS | Førde | 1998 |
| DR Montasje AS | Sandnes | 2020 |
| Dr.Elektro AS | Arnatveit | 2020 |
| Dr.Led AS | Oslo | 2024 |
| Drag Rør AS | Drag | 2005 |
| Dragados Norge AS | Oslo | 2021 |
| Dragebygg AS | Stadlandet | 1983 |
| Dragon Entreprenør AS | Sandshamn | 2025 |
| Dramart Uab | Lt-45245 Kaunas | 2014 |
| Drammen Anleggsmaskin AS | Risør | 1988 |
| Drammen Betongsaging AS | Drammen | 2024 |
| Drammen Brannsikring AS | Drammen | 2025 |
| Drammen Bygg Og Rehabilitering AS | Drammen | 2024 |
| Drammen Byggentreprenør AS | Drammen | 2002 |
| Drammen Byggprosjekt AS | Oslo | 1999 |
| Drammen Byggservice AS | Drammen | 2012 |
| Drammen Elektro AS | Drammen | 2023 |
| Drammen Entreprenør AS | Krokstadelva | 2012 |
| Drammen Gulvservice AS | Svelvik | 2024 |
| Drammen Handverk Og Service AS | Drammen | 2024 |
| Drammen Interiørsnekkeri AS | Drammen | 2022 |
| Drammen Isolering Og Blikk AS | Drammen | 2006 |
| Drammen Låsservice AS | Svelvik | 2008 |
| Drammen Malerservice AS | Drammen | 2015 |
| Drammen Mesterbygg AS | Drammen | 2005 |
| Drammen Mur & Flis AS | Drammen | 2021 |
| Drammen Rehabilitering AS | Drammen | 2002 |
| Drammen Rør AS | Lier | 2021 |
| Drammen Rørleggerbedrift AS | Drammen | 2019 |