 | RJ MASKIN Ronny Johannessen | 982567785 | SELJORD |
| RJUKAN VVS & ELEKTRO AS | 982142601 | TINN |
| RKF STÅLBYGG AS | 991100016 | GOL |
| R-K MASKIN AS | 921832656 | BALSFJORD |
| R K MONTASJE AS | 947948490 | SANDEFJORD |
| RK MUR AS | 997802659 | HOLMESTRAND |
| RKS ENTREPRENØR AS | 989656570 | INDRE ØSTFOLD |
| RK TEKNISKE AS | 991061193 | STAVANGER |
| RMB- AS | 998474728 | LILLESTRØM |
| RM BYGG & BETONG AS | 927405512 | NORD-FRON |
| RM BYGGFORNYING AS | 918430172 | RINGERIKE |
| RMC EIENDOM AS | 922859779 | GRIMSTAD |
| R. MJELDE AS | 998097266 | BERGEN |
| RMT AS | 919157658 | NORDREISA |
| R. NIELSEN ENTREPRENØR AS | 918529551 | OSTERØY |
| RØA ELEKTRISKE AS | 983188524 | OSLO |
| RØA INVEST BYGG AS | 988940119 | OSLO |
| ROALDHUS AS | 934454421 | GISKE |
| ROALD JOHANSEN INGENIØRFORRETNING AS | 960917227 | ALTA |
| ROALD MADSEN AS | 925510610 | TROMSØ |
| ROALD ØEN AS | 922820198 | SOGNDAL |
| ROAN MASKIN AS | 916567383 | ÅFJORD |
| ROAR OLSEN | 969951355 | KRISTIANSAND |
| ROAR STEEN EDVARDSEN ENTREPRENØRFORRETNING AS | 979973810 | FREDRIKSTAD |
| ROASTORM BYGG AS | 998524172 | ØVRE EIKER |
| ROBERT ROLLAND AS | 912402622 | BERGEN |
| ROBERT RØRLEGGER ROBERT NIEMIEC | 915417485 | OSLO |
| ROBERTS AS | 918282688 | IBESTAD |
| 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 |
| RODA AGRI MASKIN AS | 996657728 | STAVANGER |
| RØDAL & MYHRER ELEKTRO AS | 827118672 | OSLO |
| RØD BYGG OG EIENDOM AS | 924368608 | FREDRIKSTAD |
| RODEO ARKITEKTER AS | 915062296 | OSLO |
| RØED AS | 918559949 | ØVRE EIKER |
| 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 EKREN MASKIN AS | 997843789 | ØYGARDEN |
| ROGER JORDALEN MASKIN AS | 976220196 | ØYGARDEN |