 | RINGJORD ELEKTRO AS | 925573779 | TROMSØ |
| RINGLI BYGG AS | 825542612 | ØYSTRE SLIDRE |
| RINGSAKER ELEKTRO AS | 911948745 | RINGSAKER |
| RINGSAKER VEGG- OG TAKELEMENTER AS | 983823920 | RINGSAKER |
| RINGSIDE RØRLEGGERBEDRIFT AS | 915407692 | OSLO |
| RINGSTAD BYGG AS | 982984947 | NES |
| RINGSTAD ODD | 970227016 | INDRE ØSTFOLD |
| RINGVOLL VVS OG VARMEPUMPETEKNISK AS | 996936333 | MOSS |
| RINOR AS | 930774170 | RANA |
| RIPO FABRIKA AS | 912878465 | OSLO |
| RISA AS | 980404129 | HÅ |
| RISANGER & SØNN AS | 982146011 | HAUGESUND |
| RISDAL AS | 913855728 | NORD-FRON |
| RISKA SVEIS AS | 933767027 | SANDNES |
| RISNES ELEKTRO AS | 929874390 | ALVER |
| RISOLVE AS | 997667174 | ELVERUM |
| RISØR HEIS OG ELEKTROSERVICE AS | 994272683 | RISØR |
| RISØY BYGG AS | 888106332 | ØYGARDEN |
| RIVENES AS | 915428940 | BERGEN |
| RIVE- OG KNUSESERVICE AS | 980042529 | KRISTIANSAND |
| RIVIER AS | 832185612 | OSLO |
| RIWO AS | 915621902 | ASKØY |
| RJAZANTSEV BYGG | 932112558 | GJESDAL |
| R. JEGTEBERG AS | 925274321 | BYKLE |
| RJ MASKIN Ronny Johannessen | 982567785 | SELJORD |
| RJ MULTISERVICE AS | 930831433 | AUSTRHEIM |
| RJUKAN VVS & ELEKTRO AS | 982142601 | TINN |
| R.K. BETONGPARTNER AS | 920734774 | RØROS |
| RKF STÅLBYGG AS | 991100016 | GOL |
| RK MASKIN & TRANSPORT AS | 921832656 | BALSFJORD |
| R K MONTASJE AS | 947948490 | TØNSBERG |
| 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 PLAN AS | 934775937 | RINGERIKE |
| RMS-A AS | 835032892 | OSLO |
| RMT AS | 919157658 | NORDREISA |
| RMTI AS | 934231120 | ASKER |
| R. NIELSEN ENTREPRENØR AS | 918529551 | OSTERØY |
| RØA ELEKTRISKE AS | 983188524 | BÆRUM |
| ROALDHUS AS | 934454421 | GISKE |
| ROALD JOHANSEN INGENIØRFORRETNING AS | 960917227 | ALTA |
| ROALD MADSEN AS | 925510610 | TROMSØ |
| 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 |
| 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 |
| 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 |