| Navn | Postnummer | By |
|---|---|---|
| Maskinagenten AS | 1859 | Slitu |
| MECHMAN AS | 4100 | Jørpeland |
| Metabo Norge AS | 3241 | Sandefjord |
| Miko Marine AS | 1366 | Lysaker |
| Mink-Bürsten ApS | 5492 | Vissenbjerg |
| Mirit-Glas A/S | 2730 | Herlev |
| Mitsubishi Electric Factory Automation | 3019 | Drammen |
| Mjørud AS | 1894 | Rakkestad |
| MLT Maskin & Laserteknikk AS | 0667 | Oslo |
| Monitor ERP System | 0279 | Oslo |
| Morten Authen AS | 1852 | Mysen |
| Murrelektronik AS | 9000 | Aalborg |