 | PS ANLEGG AS | 912561798 | GRIMSTAD |
| P S HÅLAND RØR AS | 980926826 | TIME |
| PSLAND AS | 926375474 | BERGEN |
| PSV ELEKTRO AS | 920753183 | ULLENSAKER |
| PSW POWER & AUTOMATION AS | 982574145 | ØYGARDEN |
| PTG KULDETEKNISK AS | 986165460 | TROMSØ |
| PTG MULTI KULDE AS | 979843445 | BODØ |
| PTP AS | 914968623 | ENEBAKK |
| PUKK & GRAVESERVICE DRIFT AS | 915497640 | SANDEFJORD |
| PULS ARKITEKTER AS | 977503264 | OSLO |
| P UNDHEIM AS | 984079834 | TIME |
| PUR ARKITEKTUR AS | 915464378 | OSLO |
| PUSHAK AS | 992309318 | OSLO |
| PUSSMESTER AS | 918721371 | OSLO |
| PV ARKITEKTER AS | 966540249 | LARVIK |
| PV EIENDOM AS | 911608774 | STAVANGER |
| PX SOLUTIONS AS | 992074299 | DRAMMEN |
| PZ SERVICE AS | 912168646 | OSLO |
| Q2 ARKITEKTER AS | 990964599 | ARENDAL |
| QDP ARKITEKTER AS | 819498822 | FROGN |
| QPS AS | 998432839 | LEVANGER |
| QUADRAT BYGG AS | 928866297 | TROMSØ |
| QUALE MASKIN VED FRODE KNUTSEN | 995183145 | LYNGDAL |
| QUIPU AS | 927409127 | FREDRIKSTAD |
| R1 ENTREPRENØR AS | 990684650 | FLESBERG |
| R25 ARKITEKTER AS | 924620781 | NORDRE FOLLO |
| R3 ENTREPRENØR AS | 971170824 | OSLO |
| RA1 BYGG AS | 979555660 | ARENDAL |
| RAA BYGG AS | 813688662 | BERGEN |
| RAAD AS | 928898474 | ØVRE EIKER |
| RAAEN DICK | 970101543 | ØVRE EIKER |
| RAA GRAVESERVICE AS | 988856762 | RAKKESTAD |
| RAANÆS ARNE MAGNUS | 970399925 | ENEBAKK |
| RAASOK BYGG | 994832441 | INDRE ØSTFOLD |
| RÅDE GRAVESERVICE AS | 917447373 | MOSS |
| RÅDE RØRLEGGERSERVICE AMUNDSEN | 929596552 | MOSS |
| RÅDGIVENDE INGENIØRER LØYNING AS | 968469029 | KRISTIANSAND |
| RÅDGIVERHUSET AS | 999539491 | FREDRIKSTAD |
| RADONMANNEN AS | 998384125 | LILLESTRØM |
| RÆDERGÅRD ENTREPRENØR AS | 917570884 | ØRLAND |
| RAFOS ENTREPRENØR AS | 897676842 | RINGSAKER |
| RAFTEVOLD ARVID | 970405615 | VOLDA |
| RAGNAR AAS AS | 945530006 | EVJE OG HORNNES |
| RAGNAR BOVIM ARKITEKT MNAL | 891965702 | OSLO |
| RAGNAR KONSTAD | 969999811 | MELHUS |
| RAGNAR SUNDET | 996997847 | FROSTA |
| RAGNAR SVENSEN AS | 932241536 | STAVANGER |
| RÅHOLT BYGG OG EIENDOMSSERVICE AS | 916554036 | EIDSVOLL |
| RAIDON AS | 916165536 | LILLESTRØM |
| RAIL INFRASTRUCTURE AS | 918052194 | OSLO |