| MaritimEA Research |
| Marks & Spencer Group plc |
| Marlin Bidco Limited |
| Mars Chocolate North America |
| Mars Inc |
| Mars Petcare UK Ltd |
| Marston's plc |
| Marvi Mazhar & Associates |
| Masar Association |
| Masimo Corporation |
| Masraf Al Rayan Q.P.S.C. |
| Massachusetts Institute of Technology |
| Massachusetts Mutual Life Insurance Company [OR: MassMutual] |
| Massimo Dutti |
| Massimo Zanetti Industries SA |
| Master Trust Bank of Japan |
| Master Trust Bank of Japan, Ltd |
| Mastertech Serviços de Treinamento Profissional Ltda |
| MasterTherm SK s.r.o. |
| MasterTherm UK |
| Matamba Film Labs Trust |
| Matchstick Men Group Limited |
| Matrix Chambers Limited |
| Maxeon Solar Technologies, Ltd. |
| Maxingvest ag |