| MasterFit 2069039 · TMA1158318 | Yiwu Zhaoen Sports Goods Co. Ltd. | 28 Toys | Registered | 2022 |
| MASTERCOIN 1635453 · TMA886563 | BALCAN INNOVATIONS INC. | 22 Ropes | Registered | 2014 |
| MASTERFILE 1299558 · TMA815130 · design | an individual | 9 Electronics39 Transport40 Treatment+1 | Registered | 2012 |
| MASTERFILE 0470348 · TMA268851 | MASTERFILE CORPORATION | 9 Electronics16 Paper19 Building+6 | Registered | 1982 |
| MASTERFILL 2338919 | Owner not listed | 1 Chemicals | Pending | 2024 |
| MASTERFILE 0909319 | THE CANADIAN MEDICAL ASSOCIATION/ASSOCIATION MÉDICAL CANADIENNE ("CMA") | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1997 |
| MASTERFORCE 2165431 · TMA1211276 | MENARD, INC. | 6 Metal7 Machines8 Hand+5 | Registered | 2023 |
| MASTERBUILT 2151190 · TMA1226050 | Masterbuilt Manufacturing, LLC | 4 Oils9 Electronics11 Lighting+1 | Registered | 2024 |
| MASTERFLOOR 1207002 · TMA698008 | Kaindl Marken GmbH | 19 Building | Registered | 2007 |
| MASTERBUILT 1205154 · TMA632340 | Jayman Built Ltd. | 37 Construction | Registered | 2005 |
| MASTERJOINT 2332639 | Construction Research & Technology GmbH | 2 Paints17 Rubber19 Building | Pending | 2024 |
| MASTERFLEX 2007072 · TMA1141074 | ALLPRO CORPORATION | 16 Paper | Registered | 2022 |
| MASTERCORE 1919047 · TMA1110533 | BRIDGESTONE CORPORATION | 12 Vehicles17 Rubber | Registered | 2021 |
| MASTERHALL 1902050 · TMA1130782 | 2264918 ONTARIO LIMITED | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2022 |
| Masteri 1880719 · TMA1061406 | BEYES DENTAL CANADA INC. | 3 Cosmetics5 Pharmaceuticals10 Medical+1 | Registered | 2019 |
| MASTERTRIM 1822132 · TMA1036314 | Siemens Industry Software Inc. | 9 Electronics | Registered | 2019 |
| MASTERWORD 1803334 · TMA992964 | MasterWord Services, Inc. | 41 Education | Registered | 2018 |
| MASTERSEAL 1771084 · TMA1030583 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERLOCK 1736068 · TMA1033727 | Winfield Solutions, LLC | 1 Chemicals | Registered | 2019 |
| MASTERPIX 1723524 · TMA1048196 | CORNING INCORPORATED | 16 Paper40 Treatment42 Science | Registered | 2019 |
| MASTERCELL 1553239 · TMA904242 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERROC 1553238 · TMA905166 | Construction Research & Technology GmbH | 1 Chemicals2 Paints19 Building | Registered | 2015 |
| MASTERAIR 1553237 · TMA904241 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERPEL 1553232 · TMA904245 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERSEAL 1553229 · TMA904243 | an individual | 2 Paints19 Building | Registered | 2015 |