| MASTERTRACK 1987896 · TMA1200894 | Unicorn Tire Corporation | 12 Vehicles | Registered | 2023 |
| MasterTrack 1941543 · TMA1152494 | an individual | 6 Metal19 Building20 Furniture | Registered | 2022 |
| MASTERHALL 1902050 · TMA1130782 | 2264918 ONTARIO LIMITED | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2022 |
| MASTERPACK 1855360 · TMA1053200 | an individual | 22 Ropes42 Science | Registered | 2019 |
| MASTERACK 1557238 · TMA863084 | Masterack Manufacturing and Installation, LLC | 6 Metal12 Vehicles20 Furniture+2 | Registered | 2013 |
| MASTERCALF 1481975 · TMA807533 | Masterfeeds Inc. | 5 Pharmaceuticals31 Fresh | Registered | 2011 |
| MASTERTRAK 1250028 · TMA656830 | Jayman Built Ltd. | 37 Construction | Registered | 2006 |
| MASTERTAPE 2236047 | an individual | 16 Paper | Pending | 2023 |
| MASTERPAK 2208958 | Masterpak Inc. | 6 Metal16 Paper20 Furniture | Pending | 2022 |
| Masterstage 1098911 · TMA602018 | Masterstage Mfg. Inc. | 6 Metal | Registered | 2004 |
| meistertask 2055019 | MeisterLabs GmbH | 9 Electronics35 Advertising38 Telecommunications+1 | Pending | 2020 |
| MASTERLY 2296275 · TMA1263377 · design | Owner not listed | 9 Electronics35 Advertising41 Education+3 | Registered | 2024 |
| MASTERLY 2243542 · TMA1263081 | Owner not listed | 9 Electronics35 Advertising41 Education+3 | Registered | 2024 |
| MASTERVAC 1992813 · TMA1152674 · design | Canadian Tire Corporation, Limited | 7 Machines | Registered | 2022 |
| MASTERPAN 1964676 · TMA1178188 | an individual | 21 Housewares | Registered | 2023 |
| MASTERTRIM 1822132 · TMA1036314 | Siemens Industry Software Inc. | 9 Electronics | Registered | 2019 |
| MASTERCARD 1812853 · TMA1094980 · design | Mastercard International Incorporated | 9 Electronics16 Paper35 Advertising+4 | Registered | 2021 |
| MASTERCARD 1812852 · TMA1094233 · design | Mastercard International Incorporated | 9 Electronics16 Paper35 Advertising+4 | Registered | 2021 |
| MasterTemp 1810526 · TMA1022522 | PENTAIR WATER POOL AND SPA, INC. | 11 Lighting | Registered | 2019 |
| MASTERVAC 1771091 · TMA1030553 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERSEAL 1771084 · TMA1030583 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERLOCK 1736068 · TMA1033727 | Winfield Solutions, LLC | 1 Chemicals | Registered | 2019 |
| MASTEREASE 1731205 · TMA1062067 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2019 |
| MASTERPASS 1615737 · TMA1017425 | Mastercard International Incorporated | 9 Electronics35 Advertising36 Finance+3 | Registered | 2019 |
| MASTERVAC 1555952 · TMA859801 · design | Canadian Tire Corporation, Limited | 7 Machines | Registered | 2013 |