| COMMENSAL 1382942 · TMA737834 | Groupe Commensal Inc. | 5 Pharmaceuticals29 Meat30 Coffee+5 | Registered | 2009 |
| COMMENSAL 1382941 · TMA737835 · design | Groupe Commensal Inc. | 5 Pharmaceuticals29 Meat30 Coffee+5 | Registered | 2009 |
| COMMENÇAL 1019189 · TMA599634 | COMUNICACIÕ ESPORT, SA | 9 Electronics12 Vehicles14 Jewellery+1 | Registered | 2004 |
| COMMONS 2212489 | Joro Tech, Inc. | 9 Electronics | Pending | 2022 |
| COMMUNICAST 2190746 · TMA1217622 | Communispond, Inc. | 41 Education | Registered | 2024 |
| COMMENZA 1981094 · TMA1148695 | Corteva Agriscience LLC | 5 Pharmaceuticals | Registered | 2022 |
| COMMUNICA 1777370 · TMA1023648 | Communica Public Affairs Inc. | 35 Advertising36 Finance38 Telecommunications+2 | Registered | 2019 |
| COMMONSKU 1534817 · TMA865503 · design | commonsku Inc. | 9 Electronics16 Paper42 Science | Registered | 2013 |
| commonsku 1534816 · TMA865504 | commonsku Inc. | 9 Electronics16 Paper42 Science | Registered | 2013 |
| COMMUNISIS 1069020 · TMA601411 | Paragon Customer Communications (London) Limited | 16 Paper21 Housewares35 Advertising+4 | Registered | 2004 |
| COMMONSKU 2297037 · design | commonsku Inc. | 9 Electronics16 Paper42 Science | Pending | 2023 |
| COMMONKNOWLEDGE 1480850 · TMA828018 | Commonwealth Legal Inc. | 38 Telecommunications41 Education42 Science+1 | Registered | 2012 |
| ComUnik 2196058 · TMA1198251 | 9149-6695 Québec inc. | 9 Electronics35 Advertising38 Telecommunications | Registered | 2023 |
| Ciningji 2176222 · TMA1262746 | GUANGZHOU WANG LAO JIGREAT HEALTH INDUSTRY CO. LTD. | 32 Beer | Registered | 2024 |
| CANNING 2120773 · TMA1233270 | The Canning School Limited | 9 Electronics16 Paper41 Education+1 | Registered | 2024 |
| Conomus 2116667 · TMA1193600 | Shenzhen Songjia Clothing Co. Ltd. | 28 Toys | Registered | 2023 |
| CHENANGO 2106033 · TMA1253571 | American Sports Licensing, LLC | 12 Vehicles | Registered | 2024 |
| CHENMING 2073323 · TMA1143833 · design | SHANDONG CHENMING PAPER HOLDINGS LTD. | 16 Paper | Registered | 2022 |
| CHEEMONG 2050866 · TMA1156237 · design | Shenzhen Beke Technology Co.Ltd | 9 Electronics | Registered | 2022 |
| CHAMONIX 2020756 · TMA1134902 | Active Sports, LLC | 9 Electronics25 Clothing28 Toys | Registered | 2022 |
| CINEMACHINE 1938444 · TMA1178115 | an individual | 9 Electronics41 Education42 Science | Registered | 2023 |
| CINIONIC 1937217 · TMA1200741 | an individual | 9 Electronics36 Finance37 Construction+3 | Registered | 2023 |
| 7 COMMUNICATIONS 1930436 · TMA1117170 | Futersco Inc. | 35 Advertising | Registered | 2022 |
| COMMONSPIRIT 1926727 · TMA1118749 | an individual | 35 Advertising44 Medical | Registered | 2022 |
| CANNAMIZER 1833761 · TMA1010378 · design | Shenzhen Transpring Enterprise Ltd. | 10 Medical | Registered | 2018 |