| Mastermates 2181339 · TMA1230233 | 1749615 ONTARIO INC. | 10 Medical | Registered | 2024 |
| MASTERTRIM 1822132 · TMA1036314 | Siemens Industry Software Inc. | 9 Electronics | Registered | 2019 |
| MASTERTRIP 0649827 · TMA390479 | Mastercard International Incorporated | 36 Finance38 Telecommunications39 Transport | Registered | 1991 |
| "MASTERMIX" 0185525 · UCA20175 | Masterfeeds Inc. | 31 Fresh | Registered | 1944 |
| MASTERMATES 2181335 · design | 1749615 ONTARIO INC. | 10 Medical | Pending | 2022 |
| MASTERMEDI 2086173 · TMA1170080 | an individual | 10 Medical | Registered | 2023 |
| 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 |
| MASTERPIX 1723524 · TMA1048196 | CORNING INCORPORATED | 16 Paper40 Treatment42 Science | Registered | 2019 |
| MASTERAIR 1553237 · TMA904241 | Construction Research & Technology GmbH | 1 Chemicals | Registered | 2015 |
| MASTERCARD 1489905 · TMA808955 · design | Mastercard International Incorporated | 6 Metal9 Electronics16 Paper+7 | Registered | 2011 |
| MASTERCARD 1489904 · TMA808956 · design | Mastercard International Incorporated | 6 Metal9 Electronics16 Paper+7 | Registered | 2011 |
| MASTERCARD 1489901 · TMA811033 | Mastercard International Incorporated | 6 Metal9 Electronics16 Paper+7 | Registered | 2011 |
| MASTERMADE 1477074 · TMA855039 | IW Apparel, LLC | 13 Firearms18 Leather25 Clothing+1 | Registered | 2013 |
| MASTERBATH 1365592 · TMA779893 | RSI HOME PRODUCTS MANAGEMENT, INC. | 20 Furniture | Registered | 2010 |
| MASTERTRAK 1250028 · TMA656830 | Jayman Built Ltd. | 37 Construction | Registered | 2006 |
| MASTERTRAN 1198015 · TMA631122 | an individual | 4 Oils | Registered | 2005 |
| MASTERCARD 1020894 · TMA545538 · design | Mastercard International Incorporated | 36 Finance | Registered | 2001 |
| MASTERPAR 1003083 · TMA557381 | an individual | 11 Lighting | Registered | 2002 |
| MASTERGRIP 0886528 · TMA555172 | Wells Lamont Industry Group LLC | 9 Electronics | Registered | 2001 |
| MASTERCARD 0871988 · TMA519006 · design | Mastercard International Incorporated | 9 Electronics | Registered | 1999 |
| MASTERCARD 0845616 · TMA516037 · design | Mastercard International Incorporated | 16 Paper36 Finance38 Telecommunications | Registered | 1999 |
| MASTERCARE 0696121 · TMA434636 · design | an individual | 16 Paper | Registered | 1994 |
| MASTERCARD 0650229 · TMA424467 · design | Mastercard International Incorporated | 16 Paper36 Finance | Registered | 1994 |
| MASTERCARD 0449433 · TMA267139 · design | Mastercard International Incorporated | 36 Finance | Registered | 1982 |