 | MASKINENTREPRENØR HERBJØRN NILSSEN AS | 979710968 | TROMSØ |
| MASKINENTREPRENØR JIMMY NORE & SØNN AS | 984231512 | KINN |
| MASKINENTREPRENØR JOSTEIN SUNDE AS | 932251442 | SUNNFJORD |
| MASKINENTREPRENØR KARSTEN MIKALSEN AS | 997091558 | FREDRIKSTAD |
| MASKINENTREPRENØR KNUT ROLANDSEN AS | 984283814 | RØST |
| MASKINENTREPRENØR KRISTIAN KRISTIANSEN AS | 982585058 | NARVIK |
| Maskinentreprenør Lobben & Skinstad A/S | 945856335 | ØVRE EIKER |
| MASKINENTREPRENØR MAGNUS KNUDSEN AS | 930078425 | KRAGERØ |
| MASKINENTREPRENØR MONAN AS | 922960690 | KRISTIANSAND |
| MASKIN ENTREPRENØR ROGER NÆRUM AS | 889568232 | SKIEN |
| MASKINENTREPRENØR RUNE HORVE | 992498218 | KRISTIANSAND |
| MASKINENTREPRENØR S. HAMMERSETH | 969410737 | KINN |
| MASKINENTREPRENØR SØLVE BOGEN AS | 935848296 | ØVRE EIKER |
| MASKINENTREPRENØR STIAN A. OLSEN AS | 918488588 | NANNESTAD |
| MASKINENTREPRENØR TOR GABRIELSEN AS | 982389836 | TROMSØ |
| MASKINENTREPRENØR TRYGVE AASEN AS | 929052137 | SUNNFJORD |
| MASKINFIRMA ÅGE SIMONSEN & SØNN AS | 986550224 | ARENDAL |
| MASKINKONTAKT AS | 837880122 | BERGEN |
| MASKINKRAFT AS | 977485576 | RINGSAKER |
| MASKIN OG UTEMILJØ AS | 987902817 | INDRE ØSTFOLD |
| MASKINSERVICE Arne Jørgen Bøhnsdalen | 980649121 | KONGSVINGER |
| MASKINSTYRING AS | 919720441 | RINGSAKER |
| MASKINTJENESTER AS | 996787028 | SKIEN |
| MASKIN-TRANSPORT AS | 933303950 | ÅMOT |
| MASONITE BEAMS AS | 925357065 | RANA |
| MASSETRANSPORT AS | 982951720 | TRONDHEIM |
| MASSIVBETONG AS | 935120543 | SEL |
| MASSIV LUST AS | 997244605 | OSLO |
| MASTERBAD AS | 927209330 | OSLO |
| MASTER SEALING AS | 925353868 | VERDAL |
| MAST GULV AS | 928222268 | SOLA |
| M.A.T BYGG AS | 935270596 | BERGEN |
| MATEC ØST AS | 998755255 | KONGSVINGER |
| MA TEK AS | 879582512 | SØR-VARANGER |
| MATEMA BYGG AS | 932179180 | AURSKOG-HØLAND |
| MATHIAS BEKKEVOLD | 924010193 | STANGE |
| MATHISEN AS | 951648736 | RINGSAKER |
| MATHISEN BYGGRÅDGIVING | 991784691 | LARVIK |
| MATIZ ARKITEKTUR AS | 931767941 | ULLENSAKER |
| MA TOTALBYGG AS | 990250448 | OSLO |
| MATS ANDRE GJØEN | 925418439 | BJØRNAFJORDEN |
| MATS HUS AS | 967385816 | TANA |
| MAURA BYGG AS | 926038508 | NANNESTAD |
| MAXBO TEKNISKE TJENESTER AS | 924463163 | PORSGRUNN |
| MAXBYGG OG EIENDOM AS | 918765344 | NANNESTAD |
| MAXHARRAJ BYGG OG FUKTTEKNIKK | 832744972 | LILLESAND |
| MAX PFISTER AS | 980464075 | GRIMSTAD |
| MAX-RØR AS | 997836871 | DRAMMEN |
| MAXRØR AS | 997265696 | BERGEN |
| MAXWELL CONSULTING NORWAY AS | 834404702 | ASKER |
| MAXWELL NORGE AS | 913492528 | TRONDHEIM |
| MBA ENTREPRENØR AS | 990694001 | RANA |
| MB ANLEGG AS | 820721462 | GAUSDAL |
| MB BYGGSERVICE AS | 925925837 | FROGN |
| M BJØRGUM MASKINSTASJON AS | 980915395 | HOLTÅLEN |
| MBM PROSJEKT AS | 814759032 | LIER |
| MBPROFF AS | 997952340 | KARMØY |
| MB RØRINDUSTRI AS | 928755487 | BAMBLE |
| M BYGG AS | 917583013 | LUNNER |
| M CARLSEN & SØNN AS | 998540860 | GRAN |
| MCE AS | 982837553 | ETNE |
| MC RØR AS | 913015762 | KONGSBERG |
| MD FREMBYGG AS | 931791451 | LIER |
| MDH ARKITEKTER AS | 995117398 | OSLO |
| M DOBLOUG AS | 885866522 | RINGSAKER |
| ME ANLEGGSSERVICE AS | 913169298 | ASKER |
| MEBYR AS | 970942408 | RINGERIKE |
| MECC AS | 829609142 | DRAMMEN |
| MEDALEN MASKIN AS | 995407795 | SIGDAL |
| MEDBY AS | 885873782 | GAUSDAL |
| MED BYGGMESTER AS | 932953226 | PORSGRUNN |
| MEDVIND ARKITEKTUR AS | 925597384 | BÆRUM |
| ME GRAVESERVICE AS | 926886126 | LIER |
| MEINICH ARKITEKTER AS | 925974625 | OSLO |
| MEKVIK MASKIN AS | 914240980 | KRISTIANSUND |
| MELBA VVS AS | 964816565 | OSLO |
| MELBY MASKIN AS | 961611571 | EIDSKOG |
| MELCON AS | 939847065 | AURLAND |
| MELDAL BLIKKENSLAGERVERKSTED AS | 944444378 | ORKLAND |
| MELHUS BYGG & EIENDOM AS | 919932511 | MELHUS |
| MELING BYGGTEKNIKK AS | 925179701 | STAVANGER |
| MELKEVOLL MASKIN AS | 992834013 | STRYN |
| MELLBYE ARKITEKTUR INTERIØR AS | 945844159 | OSLO |
| MELLEBYGG AS | 988975699 | LØRENSKOG |
| MELLES RØRLEGGER AS | 923668861 | KRISTIANSAND |
| MELUM MASKIN AS | 913772261 | SKIEN |
| MEMBRAN ENTREPRENØR AS | 922237395 | ASKER |
| MEMBRANER OG TAKTEKKING AS | 874402052 | GJERDRUM |
| MEMBRANTAK SERVICE AS | 932267101 | MIDTRE GAULDAL |
| MEMEL BYGG AS | 926401750 | ULLENSAKER |
| MEMM DRIFT AS | 929579798 | TROMSØ |
| MEMO ELEKTRO AS | 985853673 | LØRENSKOG |
| MEMO ELSERVICE AS | 998191246 | LØRENSKOG |
| MEPRO RØR AS | 912678954 | DRAMMEN |
| MERÅKER VVS AS | 926352458 | MERÅKER |
| MER ARKITEKTUR AS | 939626387 | OSLO |
| MERCUR VVS ENTREPRENØR AS | 920015239 | OSLO |
| MERELEKTRO AS | 917886172 | OSLO |
| MERK AS | 992675497 | ÅLESUND |
| ME-RO BETONGSAGING AS | 991286659 | LIER |