| Mälarplast AB | 632 29 | Eskilstuna |
| Malmstens Verkstad AB | 341 31 | Ljungby |
| Manicus Teknik ApS | 4690 | Haslev |
| Masentia AB | 331 53 | Värnamo |
| Masentia AB | 331 53 | Värnamo |
| Maskin AB A. Fransson | 153 92 | HÖLÖ |
| Maskincentrum i Örnsköldsvik AB | 891 39 | Örnsköldsvik |
| Maximator AS | 4070 | RANDABERG |
| MCH Messecenter Herning A/S | 7400 | Herning |
| Meiszners Mekaniska AB | 613 41 | Oxelösund |
| Mekana Maskin AB | 702 27 | Örebro |
| Mekom - Mekankomponenter AB | 561 23 | Huskvarna |
| Mekpoint AB | 632 21 | Eskilstuna |
| Melin & Carlsson Hydraulic AB | 573 31 | Tranås |
| Merx Svenska AB | 602 23 | Norrköping |
| Messukeskus OY | 00520 | Helsingfors |
| Metabo Danmark A/S | 2630 | Taastrup |
| Metal Work Sverige AB | 235 39 | Vellinge |
| Metalcolour Sverige AB | 372 25 | Ronneby |
| Metalcolour Sverige AB | 372 30 | Ronneby |
| Metallcenter Sverige AB | 556 52 | Jönköping |
| Microbas Precision AB | 281 41 | Hässleholm |
| Migatronic Automation | 448 50 | Tollered |
| Migatronic Svetsmaskiner AB | 448 50 | Tollered |
| MinskaCO2 Sverige AB | 205 12 | Malmö |
| MInskaCO2.se | 8000 | Århus |
| Mirit Glas A/S | 2730 | DK-Herlev |
| Modellteknik i Eskilstuna AB | 631 02 | Eskilstuna |
| Moldow A/S | 6670 | Holsted |
| Mölltorps Gjuteri & Mekaniska Verkstad AB | 546 72 | Mölltorp |
| Morten Authen AS | 1850 | Mysen |
| Movomech AB | 291 09 | Kristianstad |
| MVUSAB Sweden | 777 50 | SMEDJEBACKEN |
| Mytec Ytbehandling AB | 432 13 | VARBERG |
