 | DALE RØR AS | 974527413 | SUNNFJORD |
| DALSBYGDA GRAVESERVICE ANS | 988707813 | OS (INNLANDET) |
| DALSEGG RØRLEGGERSERVICE AS | 912155420 | TYNSET |
| DAMI AS | 998031605 | ASKER |
| DAMMYR BYGG AS | 990927200 | FREDRIKSTAD |
| DAMSGÅRD BRANNSIKRING AS | 919334495 | BERGEN |
| DAN BLIKK AS | 968850601 | OSLO |
| DANIEL PLURA SNEKKERSERVICE AS | 823131542 | HITRA |
| DANIELSEN OG MURIQI BYGG AS | 927172259 | KRISTIANSAND |
| DANOR ELEKTRO AS | 982891523 | OSLO |
| DARAK DESIGN Dag Wirak | 951438707 | GRIMSTAD |
| DARK ARKITEKTER AS | 913659023 | OSLO |
| DARK BERGEN AS | 924729686 | BERGEN |
| DARK FREDRIKSTAD AS | 916322925 | FREDRIKSTAD |
| DARK MATTER AS | 915855849 | LØRENSKOG |
| DARK STAVANGER AS | 921629559 | STAVANGER |
| DATEK INSTALLASJON AS | 916110529 | OSLO |
| DATELCO AS | 968366076 | OSLO |
| DAVID ANDERSEN | 970429409 | HOLMESTRAND |
| DAVID BYGG AS | 975966844 | ASKER |
| DAVIK ALLSERVICE v/Bjørn Forsberg | 988664030 | BREMANGER |
| DAVMAR SERVICES AS | 929265513 | SANDEFJORD |
| DAVOR KNEZEVIC | 989292145 | SKAUN |
| DAXARO ARKITEKTUR AS | 925580910 | KONGSBERG |
| DBB AS | 930564788 | HAUGESUND |
| DB BYGG AS | 920254179 | INDRE ØSTFOLD |
| DBYGG AS | 911839768 | LUNNER |
| DC BYGG SERVICE AS | 929405196 | ØYER |
| DE BYGG AS | 927033747 | HAMMERFEST |
| DECO NORGE AS | 916204078 | MOSKENES |
| DE ELEKTRO AS | 989119621 | OSLO |
| DEGERUD TØMRERSERVICE AS | 997817982 | NESODDEN |
| DEGREE OF FREEDOM AS | 996013448 | OSLO |
| DEGVOLD BYGG ANS | 969976110 | ØSTRE TOTEN |
| DEKAGON AS | 932563509 | RINGSAKER |
| DEKO BYGG AS | 926751867 | LØRENSKOG |
| DEMCO AS | 931596187 | BERGEN |
| DEMOTEC AS | 997843878 | LARVIK |
| DERBITAK MALCO AS | 918750592 | KRISTIANSAND |
| DEROME TAKSTOLTEKNIKK AS | 976024893 | EIDSVOLL |
| DE RØRLEGGERSERVICE AS | 987283963 | BJØRNAFJORDEN |
| DETOTAKST AS | 912235556 | SANDNES |
| DEVO AS | 915662323 | STAVANGER |
| DF PRO AS | 931100556 | MOSS |
| D. HAUGEN BYGG AS | 927434326 | ALVER |
| DIAGEN INTERNATIONAL INC. AS | 989280813 | RÅDE |
| DIDRIK NYSTED AS | 914858488 | SANDNES |
| DIG PLAN AS | 871064792 | ØYGARDEN |
| DILLERUD ANLEGG AS | 998053617 | SKIPTVET |
| DIMA MURERFIRMA AS | 998386160 | KARMØY |