| McCoy Holdings | Singapore |
| mClinica | Singapore |
| Media Labs Innovation | Singapore |
| Media360 Communications | |
| MediaCo Marketing Pte Ltd | Singapore |
| Mediacorp Pte Ltd | |
| MediaOne Business Group Pte Ltd | Singapore |
| MediaPlus Digital Pte Ltd | |
| Mediapop | Singapore |
| Mediatec Marketing Pte Ltd | Singapore |
| Mediatropy | |
| Medieval Empires Pte Ltd | |
| MediSun | |
| Meditec Trader Pte Ltd | Singapore |
| Meet Ventures | Singapore |
| MeetingCom Pte Ltd | Singapore |
| MegaRobo | Singapore |
| Memory World Singapore Pte Ltd | Singapore |
| Meridian Industries (Asia Pacific) Pte Ltd | Singapore |
| Meridian S2 Solutions | Singapore |
| Mesha Technologies Pte Ltd | |
| Metric Digital Singapore | Singapore |
| MFS | Singapore |
| MI Holdings | Singapore |
| Micepad | Singapore |
| Micro United | Singapore |
| Microbit Implementation Systems Pte Ltd | Singapore |
| Microbit Technology Pte Ltd | Singapore |
| Microlabs Pte Ltd | Singapore |
| MicroLogic Solutions | Singapore |
| Micropoint Technologies Pte Ltd | Singapore |
| MicroSec Pte Ltd | |
| Microsoft Singapore | Singapore |
| Microtel Technology Pte Ltd | Singapore |
| Mighty Bear Games | Singapore |
| Milan Design House | Singapore |
| Milky Way AI | Singapore |
| MimicPC | |
| Minco Electronics Pte Ltd | Singapore |
| MindoxTechno | Singapore |
| Mindsprint | |
| MiRXES Pte Ltd | Singapore |
| Mirxes Pte Ltd | |
| MIS Asia | Singapore |
| Misfit Technologies | Singapore |
| Mitec Automation Pte Ltd | Singapore |
| Mitsubishi Electric Asia | Singapore |
| ML Systems Integrator Pte Ltd | Singapore |
| Mobile Square | Singapore |
| Mobio Interactive | |