 | ROALD ØEN AS | 922820198 | SOGNDAL |
| ROALD SERVICE AS | 934397045 | GISKE |
| ROAN MASKIN AS | 916567383 | ÅFJORD |
| ROAR OLSEN | 969951355 | KRISTIANSAND |
| RØA RØR AS | 990333416 | OSLO |
| RØA SNEKKERLAG AS | 936562604 | OSLO |
| ROASTORM BYGG AS | 998524172 | ØVRE EIKER |
| ROBERT HØYNESDAL | 989058096 | ULLENSAKER |
| ROBERT ROLLAND AS | 912402622 | BERGEN |
| ROBERT RØRLEGGER ROBERT NIEMIEC | 915417485 | OSLO |
| ROBERTSEN & SLOTNES AS | 953710765 | SKJERVØY |
| ROBERT SLETTMO AS | 919992018 | ØYGARDEN |
| Robertson Nordisk A/S | 915436595 | TRONDHEIM |
| ROB MASKIN AS | 996719308 | FARSUND |
| ROBO HOLDING AS | 989245430 | MELHUS |
| ROCKS ENTREPRENØR AS | 995617781 | HÆGEBOSTAD |
| ROCOR AS | 930772925 | OSLO |
| RODA AGRI MASKIN AS | 996657728 | STAVANGER |
| RØDAL & MYHRER ELEKTRO AS | 827118672 | OSLO |
| RØD BRANNTEKNIKK AS | 931400169 | SARPSBORG |
| RODEO ARKITEKTER AS | 915062296 | OSLO |
| RØED AS | 918559949 | ØVRE EIKER |
| ROGALAND BRANN OG SIKKERHET ANS | 970890742 | HAUGESUND |
| ROGALAND BYGG & BETONG AS | 818765762 | GJESDAL |
| ROGALAND ELEKTRO AS | 981513886 | STAVANGER |
| ROGALAND INDUSTRI AUTOMASJON AS | 920325637 | STAVANGER |
| ROGALAND KULDE AS | 980783952 | SANDNES |
| ROGALAND MONTASJE BYGG AS | 892581002 | STAVANGER |
| ROGALANDS REHABILITERING AS | 921664621 | STAVANGER |
| ROGALAND TAK AS | 916213395 | SANDNES |
| ROGALAND VVS AS | 917661375 | STAVANGER |
| ROGER AAMODT BYGG AS | 988412988 | KRISTIANSAND |
| ROGER JORDALEN MASKIN AS | 976220196 | ØYGARDEN |
| ROGER NILSEN AS | 983145612 | GRANE |
| ROGERS MASKIN & TRANSPORT ROGER N LEIRVIK | 951341533 | NARVIK |
| ROGKA AS | 832363812 | OSLO |
| ROGNAN BYGGSENTER AS | 974406446 | SALTDAL |
| ROGNAN RØRSERVICE AS | 973197118 | SALTDAL |
| ROGNE BYGG AS | 976135253 | ØYSTRE SLIDRE |
| ROGNLI BYGG AS | 918617973 | HVALER |
| ROGNMO GRAVESERVICE AS | 931527134 | MÅLSELV |
| ROGNSTAD BYGGTEKNIKK AS | 913139763 | ULLENSAKER |
| ROGNSTAD VVS AS | 979938217 | HURDAL |
| ROGSTAD & ODDEN AS | 919695803 | FOLLDAL |
| ROHA AS | 933880818 | ASKER |
| ROJO ARKITEKTER AS | 951770930 | TRONDHEIM |
| RØKENES AS | 966550015 | ALTA |
| R O LARSEN MASKIN AS | 998431735 | TØNSBERG |
| ROLF ANDREASSEN AS | 865473362 | FREDRIKSTAD |
| ROLF B. MOBERG CAND.PHILOL./ARCHITECT WITH LICENSE IN NORWAY. ACCORDIONIMPORT. | 929105702 | BERGEN |
| Rolf Døli A/S | 946943967 | SØR-ODAL |
| ROLF KRISTIANSEN | 955216849 | FROGN |
| ROLF LEVORSEN AS | 879637732 | NORE OG UVDAL |
| ROLF OG RONNY MASKIN AS | 981439821 | TRYSIL |
| ROLF OLAV KNUTSEN | 991009647 | FROLAND |
| ROLFS GRAVING OG PLANERING AS | 927886278 | SKIEN |
| ROLLAND VVS AS | 834515202 | BERGEN |
| ROLV EIDE AS | 988367060 | ØYGARDEN |
| ROLV SNARE AS | 932106817 | KONGSVINGER |
| ROLVSØY BYGG AS | 995698323 | SARPSBORG |
| ROLVSØY RØR AS | 935152445 | FREDRIKSTAD |
| ROLVUNG OG BRØNDSTED ARKITEKTER AS | 927167492 | TRONDHEIM |
| ROMARHEIM ENTREPRENØR AS | 997050789 | ALVER |
| ROMERIKE ANLEGGSDRIFT AS | 964460469 | ULLENSAKER |
| ROMERIKE BAD AS | 999198570 | ULLENSAKER |
| ROMERIKE ELEKTRO AS | 976494881 | ULLENSAKER |
| ROMERIKE ENTREPRENØR AS | 933295141 | ULLENSAKER |
| ROMERIKE GEOTEKNIKK AS | 926732617 | LILLESTRØM |
| ROMERIKE GRAVING OG TRANSPORT V/PER-CHRISTIAN AAS | 969098865 | ULLENSAKER |
| ROMERIKE & HADELAND BLÅSEISOLERING AS | 936175155 | EIDSVOLL |
| ROMERIKE HUS AS | 891141092 | RÆLINGEN |
| ROMERIKE KLIMASERVICE AS | 996025209 | EIDSVOLL |
| ROMERIKE MASKIN AS | 985479569 | NES |
| ROMERIKE OPPMÅLING AS | 979376499 | LILLESTRØM |
| ROMERIKE PROFILTEKNIKK AS | 971163364 | LILLESTRØM |
| ROMERIKE RØRLEGGERBEDRIFT AS | 990122792 | ULLENSAKER |
| ROMERIKE TAK OG FASADE AS | 934186087 | GJERDRUM |
| ROMERIKE TAK OG MEMBRAN AS | 931710346 | GJERDRUM |
| ROMRISS AS | 921283555 | BERGEN |
| ROMSDAL MASKIN AS | 991897321 | MOLDE |
| ROMSLY AS | 930687391 | AURSKOG-HØLAND |
| ROM SPRINKLER AS | 916567367 | PORSGRUNN |
| RØNAAS ENTREPRENØR AS | 920976077 | NES |
| RONALD ØDEGÅRD AS | 814580822 | KONGSBERG |
| RONDANE ENTREPRENØR AS | 988850306 | SØR-FRON |
| RONDANE OPPMÅLING AS | 922256640 | SEL |
| RONGVE BYGG | 981889770 | VOSS |
| RONGVE OG FYLLING ELEKTRO AS | 994034529 | ÅLESUND |
| RØNNESTAD & BJØRSVIK AS | 979487754 | BERGEN |
| RØNNING ANLEGG AS | 889255722 | VESTBY |
| RØNNING ANLEGGSTJENESTER | 970386858 | ORKLAND |
| RØNNING ELEKTRO AS | 915581714 | STAVANGER |
| RØNNINGEN BYGGTJENESTER AS | 925773840 | NORDRE LAND |
| RØNNINGENE AS | 921558368 | HOLMESTRAND |
| RØNNINGEN KJELL VICTOR | 970300600 | ELVERUM |
| RØNNINGEN MASKIN AS | 988132020 | NES |
| RØNNING ENTREPRENØR AS | 992046996 | ASKER |
| RØNNING INDRELID AS | 956990726 | ØVRE EIKER |
| RONNY MOLDESTAD | 969938839 | KARMØY |
| RONNY'S MASKIN AS | 912212041 | HOL |