| mbiomics GmbH | |
| mbIT Smart Technology | |
| mbits Imaging GmbH | |
| MBmedien Group GmbH | |
| MBN Maschinenbaubetriebe Neugersdorf GmbH | Saxony |
| mbon S.Meier, N. Oemler GbR | North Rhine-Westphalia |
| MBS GmbH | North Rhine-Westphalia |
| MC Arztsysteme Rheinland GmbH | North Rhine-Westphalia |
| mc Group | Berlin |
| MC Technologies GmbH | Lower Saxony |
| MCA GmbH | North Rhine-Westphalia |
| MCD Elektronik GmbH | Rhineland-Palatinate |
| McDomain | Saxony |
| MCE-ETV GmbH | Bavaria |
| McGrip web excellence | Baden-Württemberg |
| MCL Computer & Zubehör GmbH | Baden-Württemberg |
| MCL Computer-Spezialisten.de GmbH | |
| MCM Klosterfrau Healthcare GmbH | |
| McMakler GmbH | |
| McNeT Medien GmbH & Co. KG | Bavaria |
| MCS Consulting GmbH | Baden-Württemberg |
| MCS Moorbek Computer Systeme GmbH | Hamburg |
| MCS Schwarz - IT mit SYSTEM | Bavaria |
| MCS Systeme GmbH | |
| MCT-IT GmbH & Co. KG | Saxony |
| MD Consulting & Informationsdienste GmbH | Thuringia |
| MD Hardware & Service GmbH | Lower Saxony |
| mdbw GmbH | Baden-Württemberg |
| Mdc Multimedia, DatenManagement & Consulting GmbH & Co. KG | Bremen |
| MDC Vertriebs- GmbH | Bavaria |
| MDCC Magdeburg-City-Com GmbH | Saxony-Anhalt |
| mdn Hübner GmbH | Bavaria |
| MDS Informationssysteme Winfried Müller KG | |
| mds. Agenturgruppe GmbH | Bavaria |
| mdt Consulting GmbH | |
| ME-Meßsysteme GmbH | Brandenburg |
| Me4dia GmbH | Berlin |
| Meaningful Things GmbH & Co. KG | |
| measX GmbH & Co. KG | North Rhine-Westphalia |
| Mecadat AG | Bavaria |
| MECALUX GmbH | North Rhine-Westphalia |
| mech-tron GmbH & Co. KG | Bavaria |
| Mecksite Onlinemarketing | Mecklenburg-Vorpommern |
| Mecuris GmbH | |
| Med 360° Rheinland GmbH | |
| MED Editor | Baden-Württemberg |
| MED+ORG Alexander Reichert GmbH | Baden-Württemberg |
| med-i-bit EDV-Beratungs GmbH | |
| Medac GmbH | |
| Medes Electronics GmbH | Baden-Württemberg |