| Membrion 2014398 · TMA1167637 | MEMBRION, INC. | 1 Chemicals9 Electronics | Registered | 2023 |
| MEMBRAGEL 1317825 · TMA779134 | an individual | 5 Pharmaceuticals10 Medical | Registered | 2010 |
| MEMBRION 2241218 · design | Owner not listed | 1 Chemicals9 Electronics40 Treatment | Pending | 2022 |
| MEMBERSFIRST 1135407 · TMA622146 | Canadian Credit Union Association Cooperative | 36 Finance | Registered | 2004 |
| MEMBREDIRECT 1052382 · TMA579072 | Canadian Credit Union Association Cooperative | 35 Advertising36 Finance38 Telecommunications+4 | Registered | 2003 |
| MEMBERSFIRST 0862878 · TMA524768 | Canadian Credit Union Association Cooperative | 16 Paper | Registered | 2000 |
| MEMBERDIRECT 0819631 · TMA506427 | Canadian Credit Union Association Cooperative | 36 Finance38 Telecommunications | Registered | 1999 |
| MEMBRASIN 2121044 · TMA1223659 | an individual | 3 Cosmetics5 Pharmaceuticals | Registered | 2024 |
| MEMBRANA 1757119 · TMA979369 | 3M Company | 9 Electronics10 Medical11 Lighting+1 | Registered | 2017 |
| MEMBRAIN 1679394 · TMA909756 · design | CertainTeed Corporation | 17 Rubber | Registered | 2015 |
| MEMBREL 1547123 · TMA886482 | Owner not shown | 11 Lighting | Registered | 2014 |
| MEMBREX 1477500 · TMA811535 | ESM Technologies, LLC | 5 Pharmaceuticals | Registered | 2011 |
| MEMBRELL 1443997 · TMA811546 | Redd Remedies, Inc. | 5 Pharmaceuticals30 Coffee | Registered | 2011 |
| MEMBRAY 1393856 · TMA751125 | Toray Kabushiki Kaisha (Toray Industries Inc.) | 11 Lighting | Registered | 2009 |
| MEMBERNET 1000117 · TMA576484 · design | Canadian Credit Union Association Cooperative | 36 Finance | Registered | 2003 |
| MEMBERNET 0882475 · TMA547964 | Canadian Credit Union Association Cooperative | 36 Finance | Registered | 2001 |
| MemBrain 0775347 · TMA458547 | MARMOT MOUNTAIN , LLC | 25 Clothing | Registered | 1996 |
| MEMBRALOX 0551586 · TMA323062 · design | PALL CORPORATION | 22 Ropes | Registered | 1987 |
| MEMBRANE 2274235 | Membrane Labs Inc. | 9 Electronics36 Finance42 Science | Pending | 2023 |
| MEMBERGUEST 1855131 · TMA1061605 | an individual | 35 Advertising41 Education | Registered | 2019 |
| MAINFREIGHT 1716350 · TMA944040 · design | MAINFREIGHT LIMITED | 35 Advertising36 Finance39 Transport | Registered | 2016 |
| MAINFREIGHT 1561462 · TMA853151 | MAINFREIGHT LIMITED | 35 Advertising36 Finance39 Transport | Registered | 2013 |
| MAINFREIGHT 1317856 · TMA743966 | MAINFREIGHT LIMITED | 35 Advertising36 Finance39 Transport | Registered | 2009 |
| MinePwr 2248105 · TMA1277592 | manufacture adria inc | 9 Electronics | Registered | 2024 |
| MOONBROCH 2194174 · TMA1238324 | Independent Bottlers Group Inc. | 33 Wine | Registered | 2024 |