 | MAGNE HOPE AS ENTREPRENØRFORRETNING | 918366016 | ALVER |
| MAGNE MAGLER WIGGEN SIVILARKITEKTER MNAL AS | 979423705 | OSLO |
| MAGNE NORHEIM ENTREPRENØRFORRETNING | 885225802 | BERGEN |
| MAGNE OG JAN BERGET ANLEGGSDRIFT AS | 933846539 | ØVRE EIKER |
| MAGNE OPLAND AS | 976755421 | VEFSN |
| MAGNE SVEEN AS | 860318822 | VESTRE TOTEN |
| MAGNETUN MASKIN AS | 815185382 | GOL |
| MAGNUS EICHINGER VASSBOTN | 985305757 | VOLDA |
| MAGNUS M THUNESTVEDT AS | 937610440 | OSTERØY |
| MAGNUS TRANDEM AS | 925815349 | INDRE ØSTFOLD |
| MAJO BYGG AS | 831097272 | ALVER |
| MAKE ARKITEKTER AS | 813016702 | OSLO |
| MAKE MAKE AS | 927761807 | OSLO |
| MALAK RØRSERVICE AS | 913916034 | OSLO |
| MALARCHITECTURE AS | 998597919 | OSLO |
| MALERCOMPAGNIET OSLO AS | 960992482 | OSLO |
| MALERFIRMA MONSEN AS | 995474115 | BERGEN |
| MALERHUSET AS | 988118656 | OSLO |
| MALERMESTER BUER AS | 819391122 | LILLESTRØM |
| MALERMESTER GREGERSEN AS | 998142482 | LUNNER |
| MALERMESTER JENS PETTER LUNDE AS | 939640533 | OSLO |
| MALERMESTER MEUSBURGER AS | 924447788 | ULLENSVANG |
| MALERMESTER ROALD HEPSØ AS | 958222688 | SKAUN |
| MALERMESTER STUDSRUD AS | 880387642 | MARKER |
| MALERMESTER STURE BRÆKSTAD AS | 976523822 | TRONDHEIM |
| MALERMESTRENE JUUHL & BRATFOSS AS | 997327888 | OSLO |
| MALERSENTRALEN AS | 990062773 | HARSTAD |
| MALERSTUEN BYGG AS | 927456117 | NORDRE FOLLO |
| MALERSVENN ANTONIO DIAS AS | 992006528 | OSLO |
| MALING OG FLIS AS | 917514690 | TROMSØ |
| MALMIN ENTREPRENØR AS | 914561345 | SANDNES |
| MALMO OG UGELSTAD EIENDOMSSERVICE AS | 989361112 | RINGSAKER |
| MALOLO EIENDOM AS | 818505752 | TRONDHEIM |
| MÅLØY BYGG AS | 923117644 | KINN |
| MÅLØY BYGGSERVICE AS | 992230487 | KINN |
| MÅLØY EIENDOMSUTVIKLING AS | 929338650 | KINN |
| MÅLSELV BYGG AS | 989965832 | MÅLSELV |
| MÅLSELV MASKIN & TRANSPORT AS | 818313942 | MÅLSELV |
| MAMA BYGG 1 AS | 912007987 | LIER |
| MAMA BYGG AS | 915743358 | LIER |
| MANDAL BYGG AS | 917131392 | LINDESNES |
| MANDAL KJØLESERVICE AS | 991622497 | LINDESNES |
| MANDAL PIPESERVICE AS | 819474222 | LINDESNES |
| MANDAL RØRLEGGERSERVICE AS | 998028078 | LINDESNES |
| MANDT BYGG AS | 922140820 | INDRE ØSTFOLD |
| MANGLERUD RØRLEGGERBEDRIFT AS | 990400970 | OSLO |
| MANNA RØRSERVICE AS | 931049682 | RINGERIKE |
| MANNDALEN MASKIN AS | 897935082 | KÅFJORD |
| MANNHART AS | 919042214 | LARVIK |
| MANNIMASKIN AS | 920262023 | OSLO |