| MOONDANCE 1641945 · TMA948026 | an individual | 33 Wine | Registered | 2016 |
| MOUNTAINEER 1285420 · TMA725003 | DePuy Synthes, Inc. | 10 Medical | Registered | 2008 |
| MOUNTAINEER 0599088 · TMA354046 | LTP SPORTS GROUP INC. | 12 Vehicles | Registered | 1989 |
| MOUNTAINEER 0311350 · TMA164216 | an individual | 12 Vehicles | Registered | 1969 |
| MOUNTAINEER 0904238 | HER MAJESTY'S CANADIAN FORCES, DEPARTMENT OF NATIONAL DEFENCE | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1990 |
| MamaDances 1840605 · TMA1020082 | an individual | 41 Education | Registered | 2019 |
| MONTANE 1763383 · TMA1006219 | Montane Ltd. | 18 Leather24 Textiles25 Clothing | Registered | 2018 |
| MONDANO 1646737 · TMA950373 | PB Bakery Group Inc. | 29 Meat30 Coffee | Registered | 2016 |
| MONDANI 0835391 · TMA545680 | MONDANI HANDBAGS & ACCESSORIES, INC. (A NEW YORK CORPORATION) | 18 Leather | Registered | 2001 |
| MONDAINE 0285069 · TMA140089 | MONDAINE WATCH LIMITED | 14 Jewellery | Registered | 1965 |
| MONDUNE 2121852 | an individual | 32 Beer33 Wine | Pending | 2021 |
| MOUNTAINEERS 0924792 | THE MOHAWK COLLEGE OF APPLIED ARTS AND TECHNOLOGY | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2017 |
| MINDMANAGER 1017911 · TMA553288 | COREL CORPORATION | 9 Electronics | Registered | 2001 |
| MINTMAGICK 2263462 · TMA1255518 | an individual | 3 Cosmetics30 Coffee | Registered | 2024 |
| mandana 2239770 · TMA1258403 | mandana gmbH | 14 Jewellery40 Treatment42 Science | Registered | 2024 |
| MEMDENSE 2232143 · TMA1250289 | BL Technologies, Inc. | 40 Treatment | Registered | 2024 |
| MENDENG 2220875 · TMA1248545 | an individual | 25 Clothing | Registered | 2024 |
| MOUNTAINTOP 2205065 · TMA1241321 · design | an individual | 18 Leather | Registered | 2024 |
| MONTEMPO 2167493 · TMA1217512 | Canadian Mental Health Association, York Region Branch | 9 Electronics16 Paper41 Education+1 | Registered | 2024 |
| MONDEMEILLEUR 2115051 · TMA1201383 | MACKENZIE FINANCIAL CORPORATION | 36 Finance | Registered | 2023 |
| MindEMR 2109029 · TMA1180542 | an individual | 42 Science | Registered | 2023 |
| MindAmp 2090429 · TMA1184969 | MINDAMP LIMITED | 9 Electronics | Registered | 2023 |
| Minetom 2082954 · TMA1133466 | an individual | 11 Lighting | Registered | 2022 |
| MountainView 2079544 · TMA1165894 | Peak Innovations Inc. | 6 Metal19 Building | Registered | 2023 |
| Meant4Music 2056815 · TMA1275490 | Outback Shack Music Inc. | 35 Advertising38 Telecommunications41 Education | Registered | 2024 |