 | 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 |
| MONTASJE SERVICE AS | 991960368 | KRISTIANSUND |
| MONTASJETEKNIKK AS | 916886918 | LILLESAND |
| MØRCH & KOLDRE MUR & FLIS AS | 983752349 | LILLESTRØM |
| MØREBYGG AS | 927418169 | ÅLESUND |
| MØRE ELEKTROSERVICE AS | 991965742 | ÅLESUND |
| MØRE MILJØSANERING AS | 912383822 | SYKKYLVEN |
| MØRE RØR AS | 912403602 | SYKKYLVEN |
| MØRE STÅL AS | 917823758 | ÅLESUND |
| MØRE TAK AS | 927678047 | SULA |
| MORFEUS AS | 945139579 | OSLO |
| MORFO ARKITEKTER AS | 916637217 | OSLO |
| MORGAN AS | 998179327 | DRANGEDAL |
| MORGEDAL BYGG AS | 912118444 | KVITESEID |
| MORGEDAL RØR AS | 914397081 | SELJORD |
| MORITZ VATLE & SØNN AS | 917089019 | BERGEN |
| MORKEN MASKIN AS | 920366201 | SKAUN |
| MØRK VVS RØRLEGGERBEDRIFT AS | 920609333 | SKIPTVET |