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| DRANGE MASKIN & TRANSPORT AS | 832486612 | ØYGARDEN |
| DRANGE MURMESTERFORRETNING AS | 977074037 | OSTERØY |
| DRANGES TAKST OG BYGG AS | 915879799 | AURSKOG-HØLAND |
| DRÅPE ENTREPRENØR AS | 920044352 | OSLO |
| DRIFT OG ANLEGG AS | 918546332 | SANDEFJORD |
| DR ING A AAS-JAKOBSEN AS | 941019285 | OSLO |
| DR ING A AAS-JAKOBSEN TRONDHEIM AS | 959115621 | TRONDHEIM |
| DR.ING. TORBJØRN KJOBERG AS | 924190531 | OSLO |
| DRIV ARKITEKTER AS | 984590857 | OSLO |
| DRMA AS | 985787972 | DRAMMEN |
| DRØBAK ARKITEKTKONTOR AS | 943515026 | FROGN |
| DRØBAK RØRLEGGERSERVICE AS | 845705712 | FROGN |
| DRØBAK TØMRERSERVICE AS | 992793279 | FROGN |
| DROGSETH BYGG AS | 824324662 | NORDRE FOLLO |
| DRØMMEHUSET AS | 918617132 | BERGEN |
| DRONEDATA AS | 922346151 | EIDSKOG |
| DRONNINGA LANDSKAP AS | 988695521 | OSLO |
| DR TECHN KRISTOFFER APELAND AS | 857288262 | OSLO |
| DR TECHN OLAV OLSEN AS | 981124626 | BÆRUM |
| DRUGLI MASKIN AS | 986977295 | ORKLAND |
| DRY WORKS AS | 912396967 | NOME |
| DS BYGG & EIENDOM AS | 928728935 | ELVERUM |
| DS BYGGTEAM AS | 929256514 | STANGE |
| DS ENTREPRENØR AS | 893846352 | FREDRIKSTAD |
| DSL STÅL AS | 987976012 | MELHUS |
| DS NOR AS | 997222717 | KRISTIANSUND |
| DS RØR & VARME AS | 915533965 | TRONDHEIM |
| DS STÅLKONSTRUKTION NUF | 995522225 | MOSS |
| DST ARKITEKTER AS | 929224876 | DRAMMEN |
| DST BYGG AS | 929583396 | SANDEFJORD |
| DUCO AS | 914180929 | KARMØY |
| DUO TAKST AS | 929774698 | TIME |
| DVERGSDAL & SUNDE BYGG AS | 986219447 | SUNNFJORD |
| DVI SERVICE AS | 989999419 | KINN |
| DVS ENTREPRENØR AS | 979677863 | NITTEDAL |
| DYBDAHL MASKIN AS | 929509234 | INDRE FOSEN |
| DYBSJORD MASKIN AS | 998182980 | HOL |
| DYBVIG AS | 976700163 | OSLO |
| DYBWAD IVAR R | 969607913 | STJØRDAL |
| DYKTIGHANDVERKER AS | 916258801 | NITTEDAL |
| DYRENDAHL BYGG AS | 988190241 | INDRE FOSEN |
| DYRK AS | 925155365 | OSLO |
| DYRLI RØR AS | 977108217 | FLEKKEFJORD |
| DYRØ OG MOEN AS | 985175608 | OSLO |
| DYRØY ENTREPRENØR AS | 932209357 | ALVER |
| DYRUD BYGG AS | 927801302 | OSLO |
| DYRUD ELEKTRO AS | 981072316 | SELJORD |
| DYRUD MASKIN OG UTEMILJØ AS | 814835022 | GRAN |
| DYVIK & FASTING ARKITEKTER AS | 999560857 | OSLO |