 | RETT ENTREPRENØR AS | 925880388 | OSLO |
| RETTE RØR AS | 920772404 | SKIEN |
| RETT HJEM ARKITEKTER AS | 999638821 | TRONDHEIM |
| RETURA IR AS | 985711267 | LEVANGER |
| RETURA SOGN & FJORDANE AS | 985226482 | GLOPPEN |
| RETVEDT AS | 917722102 | RINGERIKE |
| REVER & DRAGE AS | 917324093 | OSLO |
| REVHEIM MUR OG HAGE AS | 915429947 | OSTERØY |
| REYRR AS | 825500162 | SANDNES |
| RFB AS | 925553956 | KRISTIANSAND |
| RF BYGGETEKNIKK AS | 928779319 | OSLO |
| RFG BETONG AS | 930537713 | NORD-FRON |
| RGB ENTREPRENØR AS | 932723697 | OSLO |
| RG BYGGENTREPRENØR AS | 930927112 | FREDRIKSTAD |
| RGR ELEKTRO AS | 925273481 | BERGEN |
| RGV AS | 915521371 | RINGSAKER |
| RH BYGG AS | 987877065 | EIDSKOG |
| RHK AS | 929787544 | FREDRIKSTAD |
| RH KVALITETSBYGG AS | 924701757 | LILLEHAMMER |
| RIBA RÅDGIVENDE INGENIØRER AS | 979886381 | OSLO |
| RIBE ENTREPRENØR AS | 932332817 | LILLESAND |
| RIB INORD AS | 992320885 | ALTA |
| RIB KONSULT AS | 827660302 | DRAMMEN |
| RICHARD FOSSUM | 926605860 | NORDRE LAND |
| RIEBER PROSJEKT AS | 911678462 | ASKER |
| RIFORM AS | 915101836 | SANDNES |
| RIFT ARKITEKTUR AS | 927485699 | OSLO |
| RIGEO AS | 921836821 | BÆRUM |
| RIIK AS | 928037592 | SØR-VARANGER |
| RIIS BYGG ENTREPRENØR AS | 988400106 | LILLESTRØM |
| RIIS BYGG TRØNDELAG AS | 930700312 | TRONDHEIM |
| RIIS EIENDOM AS | 937757964 | TRONDHEIM |
| RIIS ELEKTRO AS | 967907103 | HALDEN |
| RIIS GLASS OG FASADE AS | 969047780 | TRONDHEIM |
| RIIS-RØNNOW AS | 917676003 | OSLO |
| RIKELEKTRO AS | 991320164 | HALDEN |
| RIKSHEIM CONSULTING AS | 960186516 | ÅLESUND |
| RIKSTAD GRØNTANLEGG AS | 929475712 | TØNSBERG |
| RIKSVOLD AS | 990518475 | VERDAL |
| RINDAL MUR OG BETONG AS | 920801226 | RINDAL |
| RINDALSHYTTER AS | 984057091 | RINDAL |
| RINDALS-TRE AS | 984136358 | RINDAL |
| RINGBO BBL | 948321475 | RINGERIKE |
| RINGEN RØRSERVICE AS | 920678564 | OSLO |
| RINGERIKE ANLEGGSSERVICE AS | 980502767 | RINGERIKE |
| RINGERIKE VVS AS | 931643045 | RINGERIKE |
| RING FORSKALING AS | 827156582 | RINGERIKE |
| RINGJORD ELEKTRO AS | 925573779 | TROMSØ |
| RINGLI BYGG AS | 825542612 | ØYSTRE SLIDRE |
| RINGSAKER ELEKTRO AS | 911948745 | RINGSAKER |