 | MOMENT BETONG AS | 927896311 | SANDNES |
| MOMENTUM ARKITEKTER AS | 992034904 | OSLO |
| MOMRAK MESTERBYGG AS | 931590847 | FYRESDAL |
| MONSEN ELEKTRO AS | 914392489 | BERGEN |
| MONS GREGERSEN AS | 979346050 | HOLMESTRAND |
| MONSTAD BYGG AS | 997299639 | TØNSBERG |
| MONTAL SYSTEMS AS | 957226833 | VIK |
| MONTASJE SERVICE AS | 991960368 | KRISTIANSUND |
| MONTASJETEKNIKK AS | 916886918 | LILLESAND |
| MØRCH & KOLDRE MUR & FLIS AS | 983752349 | LILLESTRØM |
| MØRE ANLEGG AS | 934349024 | SYKKYLVEN |
| 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 |
| MORITZ VATLE & SØNN AS | 917089019 | BERGEN |
| MORKEN MASKIN AS | 920366201 | SKAUN |
| MØRK VVS RØRLEGGERBEDRIFT AS | 920609333 | OSLO |
| MORO-BYGG AS | 929149270 | TRONDHEIM |
| MORTEN AAMODTBYGG AS | 928486397 | HÅ |
| MORTEN BRUVOLD AS | 999614361 | LUNNER |
| MORTEN EIDE ARKITEKTER AS | 943783950 | OSLO |
| MORTEN FOSSEN AS | 979964315 | SIGDAL |
| MORTEN GULTVEDT ENTREPRENØR AS | 970903178 | ÅS |
| MORTEN HALHJEM BYGG AS | 917799474 | BJØRNAFJORDEN |
| MORTEN KVAL AS | 980395952 | LILLEHAMMER |
| MORTEN LUDVIGSEN GRAVESERVICE | 968903691 | LØRENSKOG |
| MORTEN NYBROT AS | 990478376 | BJØRNAFJORDEN |
| MORTEN RØR AS | 995360039 | EIGERSUND |
| MORTEN RUGLAND MEKANISK | 922050422 | HÅ |
| MORTEN SLAATSVEEN | 986082247 | GJØVIK |
| MOSENG POULSEN ARKITEKTUR AS | 976812638 | OSLO |
| MOSJØEN RØRLEGGERSERVICE AS | 932809028 | VEFSN |
| MOSS BAD OG VARME AS | 930686018 | MOSS |
| MOSS ENTREPRENØR AS | 916135815 | RÅDE |
| MOSS FLIS & BETONG AS | 995256797 | MOSS |
| MOSS GLASS OG FASADE AS | 987415517 | MOSS |
| MOSS RØRLEGGER AS | 933576256 | MOSS |
| MOSS RØRLEGGERSERVICE AS | 976814738 | MOSS |
| MOSS SNØRYDDINGSKOMPANI AS | 923535349 | MOSS |
| MOSS VVS AS | 816173892 | MOSS |
| MOSTER ELEKTRO AS | 990904715 | BØMLO |
| MOSTUE AS | 913184602 | NORDRE FOLLO |
| M. OTTERSHAGEN & SØNN AS | 995709651 | LØTEN |
| MOTUM AS | 818709722 | OSLO |
| MOVATEK AS | 921862709 | EIDSVOLL |
| MOVENTA AS | 935405319 | FROGN |
| MP ENTREPRENØR AS | 934802292 | BÆRUM |
| MPFC AS | 922699550 | NITTEDAL |
| MPF ENTREPRENØR AS | 985613338 | OSLO |
| MR ENTREPRENØR AS | 930576182 | HOL |
| MR. FUG AS | 920844561 | OSLO |
| MR HÅNDVERK AS | 921565356 | DRAMMEN |
| M ROMULD & SØNNER AS | 915472249 | KRISTIANSUND |
| MR. PUKK AS | 998740908 | OSLO |
| MRS VVS AS | 917983615 | LILLESTRØM |
| M.SIVERTSEN BYGG AS | 986998705 | RISØR |
| MT-BYGGTEKNIKK AS | 922943117 | STJØRDAL |
| MT BYGGVERK AS | 997993454 | OSLO |
| MT CABINS AS | 928964213 | AURSKOG-HØLAND |
| MTE AS | 927385546 | SØRREISA |
| MTE-BYGG AS | 936095518 | FREDRIKSTAD |
| MT FLIS AS | 928911993 | TRONDHEIM |
| MTG AS | 941627943 | TRONDHEIM |
| MTK BYGG AS | 919076755 | ULLENSVANG |
| MT KLIMA AS | 820739582 | RINGERIKE |
| MULDBAKKEN BYGG AS | 997991877 | SØR-AURDAL |
| MULTIBETONG AS | 915270646 | NARVIK |
| MULTI BYGG AS | 910854798 | RINGSAKER |
| MULTIBYGG AS INGENIØR- OG ENTREPRENØRFORRETNING | 952720600 | NITTEDAL |
| MULTIBYGG HÅNDVERK AS | 932846225 | OSLO |
| MULTIBYGG NORD AS | 925854999 | ALTA |
| MULTI BYGG PARTNER AS | 918588930 | LIER |
| MULTICO AS | 919563974 | IVELAND |
| MULTICON RØR SERVICE AS | 920618472 | BÆRUM |
| MULTICONSULT NORGE AS | 918836519 | OSLO |
| MULTIDRIFT AS | 834743442 | ALTA |
| MULTI ENTREPRENØR AS | 919369809 | BJØRNAFJORDEN |
| MULTIFLIS AS | 992299649 | ARENDAL |
| MULTI KRAFT AS | 975926451 | LIER |
| MULTILUFT AS | 917786429 | HORTEN |
| MULTIREHAB AS | 918714227 | OSLO |
| MULTI VVS & VARMEPUMPER AS | 831688262 | RINGERIKE |
| MULVIK AS | 932102978 | VOLDA |
| MUR & BETONGSERVICE Arne Sægrov | 984770006 | SANDNES |
| MURCO AS | 926380877 | TRONDHEIM |
| MUREFIRMA PÅL HAUGEN | 953996529 | RINGSAKER |
| MURER ARUN ARORA | 997082885 | ULLENSAKER |
| MURER AUDUN FREDRIKSEN AS | 996785793 | EIDSVOLL |
| MURER BERGEHAGEN AS | 920641865 | LILLEHAMMER |
| MURERCOMPANIET AS | 912065332 | DRAMMEN |
| MURERFIRMA BREITVE AS | 976301935 | HAUGESUND |
| MURERFIRMA EDVIN AAMODT | 987660937 | KRISTIANSAND |
| MURERFIRMA FRANK FREDRIKSEN AS | 983174752 | ULLENSAKER |