 | MN RØRLEGGERBEDRIFT AS | 927270188 | DRAMMEN |
| MO1 MASKIN AS | 927712202 | ÅL |
| M.Ø ANLEGG OG BETONG 2 AS | 931053396 | LINDESNES |
| MOBILGRUS AS | 996727300 | TYNSET |
| MOBY ENTREPRENØR AS | 991145834 | FREDRIKSTAD |
| MO BYGGSERVICE AS | 928451526 | ASKER |
| MODAHL ELEKTRISKE AS | 923660194 | NORDRE FOLLO |
| MODALSLI RØR AS | 923699562 | FLEKKEFJORD |
| MODALSLI RØR LISTER AS | 928459713 | LYNGDAL |
| MODERNE BYGGFORNYELSE AS | 979446071 | OSLO |
| MODERNE UTEROM AS | 912682439 | OSLO |
| MODERNE VVS AS | 967478091 | OSLO |
| MODULPLUSS SØR AS | 927065029 | EVJE OG HORNNES |
| MODULSERVICE AS | 998210585 | SKIEN |
| MODULVEGGER BERGEN AS | 897997312 | BERGEN |
| MODULVEGGER STAVANGER AS | 938527024 | SANDNES |
| MODUS ARKITEKTER AS | 998653576 | OSLO |
| MODUS MUR AS | 919332026 | KRISTIANSAND |
| MOE ENTREPRENØR AS | 991482806 | FJORD |
| MOELVEN BYGGMODUL AS | 941809219 | RINGSAKER |
| MOELVEN LIMTRE AS | 913711300 | RINGSAKER |
| MOELVEN MODUS AS | 951269778 | ULLENSAKER |
| MOELV RØRSERVICE AS | 983196551 | RINGSAKER |
| MOE MASKIN OG TRANSPORT AS | 824353182 | SMØLA |
| MOEN BYGGTJENESTER AS | 995383756 | SOLA |
| MOENS BYGGSERVICE AS | 928027902 | VESTNES |
| MOFOSSBAKKE BYGG SERVICE | 995263076 | DRANGEDAL |
| MOI ARKITEKTER AS | 917126917 | ASKER |
| MOI BYGG AS | 983270492 | KVINESDAL |
| MOI RØR AS | 971004525 | KRISTIANSAND |
| MOLAND TOTAL AS | 911908921 | SENJA |
| MOLDEN ARKITEKTER AS | 954990508 | BERGEN |
| MOLDE VVS AS | 990507139 | MOLDE |
| MOLDJORD BYGG OG ANLEGG AS | 986899545 | BEIARN |
| MOLDREM MASKIN AS | 925581372 | VEFSN |
| MOLL AS | 996755088 | SANDNES |
| MØLL BYGG AS | 814348962 | LINDESNES |
| MØLLER MUR OG BYGG AS | 963433212 | OSLO |
| MØLNÅ SNEKKERSERVICE | 895590142 | TRONDHEIM |
| MOLO CONSULTING AS | 932019248 | KRISTIANSAND |
| MØLSTER INSTALLASJON AS | 985160775 | VOSS |
| MOLVÆR BYGG AS | 875998552 | SULA |
| MOMEK CIVIL AS | 990797366 | RANA |
| MOMENT BETONG AS | 927896311 | SANDNES |
| MOMENTUM ARKITEKTER AS | 992034904 | OSLO |
| MOMRAK MESTERBYGG AS | 931590847 | FYRESDAL |
| MONIA AS | 918888020 | OSLO |
| MONSEN ELEKTRO AS | 914392489 | BERGEN |
| MONS GREGERSEN AS | 979346050 | HOLMESTRAND |
| MONTAL SYSTEMS AS | 957226833 | VIK |