 | MIDTSTØL TRANSPORT AS | 914290864 | ARENDAL |
| MIDT-TELEMARK BRANNSERVICE AS | 977507030 | MIDT-TELEMARK |
| MIDT-TELEMARK BYGG AS | 985625506 | MIDT-TELEMARK |
| MIDT-TELEMARK RØR AS | 922255792 | NOME |
| MIDTUN BYGGESERVICE AS | 980411850 | GULEN |
| MIFO AS | 851450912 | MOLDE |
| MIKA BYGGTJENESTER AS | 912087999 | LIER |
| MIKAEL WIK AS | 994788787 | VERDAL |
| MIKALSEN INSTALLASJON AS | 927062283 | SKJERVØY |
| MIKALSEN MASKIN AS | 916992378 | HASVIK |
| MIKKEL AMB | 924464690 | RINGSAKER |
| MIKKELSEN GRAVING AS | 927306808 | FREDRIKSTAD |
| MIKKELSEN & MIKKELSEN AS | 988238686 | SANDEFJORD |
| MILJØANLEGG ENTREPRENØRFORRETNING AS | 987544627 | ØYGARDEN |
| MILJØ BYGG AS | 881023822 | STAVANGER |
| MILJØ BYGG VEST AS | 963763921 | BERGEN |
| MILJØCONSULT AS | 980908100 | BERGEN |
| MILJØ ELEKTRO AS | 960850661 | SANDNES |
| MILJØLANDSKAP ANLEGG AS | 985862923 | INDRE ØSTFOLD |
| MILJØPROSJEKT AS | 992841044 | SKIEN |
| MILJØSANERING AS | 998831741 | ØYGARDEN |
| MILJØTAK AS | 976714113 | GJERDRUM |
| MILJØ-VVS AS | 919414081 | RINDAL |
| MINDE BLIKK AS | 918062572 | BERGEN |
| MINDOR BERGE AS | 937520468 | HERØY (MØRE OG ROMSDAL) |
| MINDSTATE SOLUTIONS AS | 923567828 | FÆRDER |
| MINEL AINSTALL AS | 992514914 | GRAN |
| MINEL DRØBAK ELEKTRISKE AS | 980433994 | FROGN |
| MINEL ELMONTASJE AS | 990239673 | HAMAR |
| MINEL ELMONTASJE ELVERUM AS | 980349683 | ELVERUM |
| MINEL GJØVIK AS | 986354026 | GJØVIK |
| MINEL GLÅMDAL AS | 974531682 | KONGSVINGER |
| MINEL GUDBRANDSDAL AS | 887486972 | SEL |
| MINEL KREATIV ELEKTRO SKI AS | 994853694 | NORDRE FOLLO |
| MINEL LAND ELEKTRISKE AS | 944701613 | NORDRE LAND |
| MINH RØRLEGGERSERVICE AS | 983823785 | OSLO |
| MINIMASKIN AS | 976139186 | BERGEN |
| MIØSEN PROSJEKT AS | 896178652 | STANGE |
| MIRA BYGG AS | 917376492 | ØYER |
| MIREK BYGG Miroslaw Czeslaw Tritt | 994566563 | FROGN |
| MITHASSEL INGENIØR OG RØRLEGGERBEDRIFT AS | 979575319 | OSLO |
| MIVENT AS | 823242522 | OSLO |
| MJÅSETH & ULLEBUST BYGG AS | 930120820 | ASKVOLL |
| MJÅTVEIT ØYVIND | 970283846 | HÅ |
| MJELDE BYGG AS | 931119869 | OSTERØY |
| MJELSTAD OG STOKKE RØRLEGGERFORRETNING AS | 974371855 | OSTERØY |
| MJELSTAD VVS AS | 997948297 | BERGEN |
| MJG MASKIN AS | 924779950 | BIRKENES |
| Mjøen VVS A/S | 947427601 | ORKLAND |
| M.JOHANSEN AS | 819758352 | LYNGEN |