| MCC 360 1794972 · TMA1001079 | MEDICAL COUNCIL OF CANADA | 9 Electronics16 Paper35 Advertising+2 | Registered | 2018 |
| MC35 2155989 · TMA1229348 | Adey Holdings (2008) Limited | 1 Chemicals2 Paints3 Cosmetics | Registered | 2024 |
| MC3+ 2143670 · TMA1247937 | Adey Holdings (2008) Limited | 3 Cosmetics | Registered | 2024 |
| MC20 2075603 · TMA1202594 · design | an individual | 12 Vehicles28 Toys | Registered | 2023 |
| MC20 2026625 · TMA1169538 · design | an individual | 12 Vehicles28 Toys | Registered | 2023 |
| MG30 1842122 · TMA1016806 | Kortech Calcium Services Ltd. | 1 Chemicals | Registered | 2019 |
| MC10+ 1839013 · TMA1055146 | Adey Holdings (2008) Limited | 5 Pharmaceuticals | Registered | 2019 |
| MC10 1702045 · TMA954624 · design | Medidata Solutions, Inc. (a Delaware corporation) | 9 Electronics10 Medical14 Jewellery+1 | Registered | 2016 |
| MC³ 1664809 · TMA961620 | La Cordée Macap Inc. | 25 Clothing41 Education | Registered | 2017 |
| MAAS360 1768183 · TMA1043831 | INTERNATIONAL BUSINESS MACHINES CORPORATION | 9 Electronics16 Paper41 Education+1 | Registered | 2019 |
| MAX 360 1746304 · TMA964088 | Escort Inc. | 9 Electronics | Registered | 2017 |
| MSK 360 1991652 | an individual | 41 Education44 Medical | Pending | 2019 |
| MEXJAI 2262813 · TMA1284734 · design | Guangzhou Fangze International Trade Co. Ltd. | 3 Cosmetics | Registered | 2025 |
| MYCHWAY 2260561 · TMA1281125 · design | an individual | 3 Cosmetics10 Medical35 Advertising | Registered | 2025 |
| MOYICOW 2260427 · TMA1279446 | an individual | 9 Electronics | Registered | 2024 |
| MUYOKA 2256739 · TMA1276274 | Shanghai Huasha Import & Export Co. Ltd. | 21 Housewares | Registered | 2024 |
| MASKA 2252320 · TMA1251648 | Camions Maska Inc. | 35 Advertising36 Finance37 Construction+1 | Registered | 2024 |
| MIKAH 2249478 · TMA1267410 | an individual | 8 Hand18 Leather | Registered | 2024 |
| MK 2248145 · TMA1279124 · design | Michael Kors (Switzerland) International GmbH | 18 Leather25 Clothing | Registered | 2024 |
| MK 2248144 · TMA1267276 · design | Owner not listed | 18 Leather25 Clothing | Registered | 2024 |
| MK 2248143 · TMA1279123 · design | Michael Kors (Switzerland) International GmbH | 18 Leather25 Clothing | Registered | 2024 |
| MAX 1000 2248060 · TMA1267266 · design | Owner not listed | 5 Pharmaceuticals34 Tobacco | Registered | 2024 |
| MK 2247702 · TMA1279116 · design | Michael Kors (Switzerland) International GmbH | 18 Leather25 Clothing | Registered | 2024 |
| MJW 2246573 · TMA1265801 | Owner not listed | 10 Medical | Registered | 2024 |
| MKGO 2245930 · TMA1263249 · design | Owner not listed | 14 Jewellery | Registered | 2024 |