| COMMONGOALS 1188430 · TMA622764 | S.H. Rowat Enterprises Ltd. | 9 Electronics41 Education42 Science | Registered | 2004 |
| ComUnik 2196058 · TMA1198251 | 9149-6695 Québec inc. | 9 Electronics35 Advertising38 Telecommunications | Registered | 2023 |
| COMMUNICAST 2190746 · TMA1217622 | Communispond, Inc. | 41 Education | Registered | 2024 |
| 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 |
| COMMENZA 1981094 · TMA1148695 | Corteva Agriscience LLC | 5 Pharmaceuticals | 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 |
| CANNAMIZER 1833602 · TMA1009613 · design | Shenzhen Transpring Enterprise Ltd. | 34 Tobacco | Registered | 2018 |
| CANNAMIZER 1833581 · TMA1010376 · design | Shenzhen Transpring Enterprise Ltd. | 10 Medical | Registered | 2018 |
| CANAMEK 1813210 · TMA1056191 | Canamek Systems Inc | 9 Electronics | Registered | 2019 |
| CONNING 1785023 · TMA984421 | Conning & Company | 9 Electronics16 Paper35 Advertising+1 | Registered | 2017 |
| COMMUNICA 1777370 · TMA1023648 | Communica Public Affairs Inc. | 35 Advertising36 Finance38 Telecommunications+2 | Registered | 2019 |
| COMENZA 1759116 · TMA975485 · design | an individual | 6 Metal | Registered | 2017 |
| COMENZA 1757485 · TMA975484 | an individual | 6 Metal | Registered | 2017 |
| COWMANAGER 1741250 · TMA997009 | an individual | 9 Electronics | Registered | 2018 |
| CONYNGHAM 1732373 · TMA1028135 | Slane Castle Irish Whiskey Limited | 33 Wine | Registered | 2019 |