| MASTERWORD 1803334 · TMA992964 | MasterWord Services, Inc. | 41 Education | Registered | 2018 |
| MASTERCELL 1553239 · TMA904242 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERPEL 1553232 · TMA904245 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERGOLD 1183266 · TMA635355 | an individual | 4 Oils | Registered | 2005 |
| MASTERSHIELD 1991067 · TMA1251973 | MOLD-MASTERS (2007) LIMITED, a legal entity | 7 Machines | Registered | 2024 |
| MASTERSHIELD 0533001 · TMA312826 | FCA US LLC | 1 Chemicals | Registered | 1986 |
| MASTERSHIELD 2349064 | Construction Research & Technology GmbH | 1 Chemicals2 Paints17 Rubber | Pending | 2024 |
| MASTERFEEDS 0653853 · TMA386431 · design | Masterfeeds Inc. | 5 Pharmaceuticals31 Fresh | Registered | 1991 |
| MASTERFEEDS 0543885 · TMA313498 | Masterfeeds Inc. | 30 Coffee31 Fresh | Registered | 1986 |
| 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 |
| MasterEye 2096431 · TMA1216058 | GUILIN ZHISHEN INFORMATION TECHNOLOGY CO. LTD. | 9 Electronics | Registered | 2023 |
| MASTERMEDI 2086173 · TMA1170080 | an individual | 10 Medical | Registered | 2023 |
| MASTEREX 2077318 · TMA1157486 · design | an individual | 21 Housewares24 Textiles25 Clothing | Registered | 2022 |
| MASTERMIND 2067918 · TMA1135817 | Mastery Logistics Systems, Inc. | 42 Science | Registered | 2022 |
| MASTERHALL 1902050 · TMA1130782 | 2264918 ONTARIO LIMITED | 9 Electronics14 Jewellery16 Paper+4 | Registered | 2022 |
| 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 |
| MASTERSEAL 1771084 · TMA1030583 | GPCP IP Holdings LLC | 16 Paper | Registered | 2019 |
| MASTERKEY 1757815 · TMA964431 | an individual | 14 Jewellery16 Paper18 Leather+5 | Registered | 2017 |
| MASTERCEM 1695031 · TMA934139 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2016 |
| MASTERSET 1553231 · TMA904244 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERSEAL 1553229 · TMA904243 | an individual | 2 Paints19 Building | Registered | 2015 |
| MASTERLY 1532838 · TMA827790 | an individual | 7 Machines | Registered | 2012 |