| Name | Type | Country |
|---|---|---|
| Mirari Iniciativas Creativas S.L. | Enterprise | Spain |
| MLS Multimedia AE | Enterprise | Greece |
| Mobile Dreams Consulting S.L. | Enterprise | Slovenia |
| Mondragón Corporación | Enterprise | Spain |
| Mondragon Unibertsitatea | University | Spain |
| Montajes Electricos Cuerva | Enterprise | Spain |
| MORElab | University | Spain |
| Mtu Eesti Ariinglite Assotsiatsioon | Enterprise | |
| MultiMed Engineers | Enterprise | Italy |
| MUNICIPALITY OF AMAROUSSION | Public administration |