| COCKROACHCLOUD 2120661 · TMA1195735 | Cockroach Labs, Inc. | 42 Science | Registered | 2023 |
| COCREACT!! 2090698 · TMA1252097 · design | Hoffmann Consulting GmbH | 9 Electronics35 Advertising41 Education+1 | Registered | 2024 |
| Chicrug 2259395 · TMA1281090 | Jiaxing Yuda Electric Appliance Co. Ltd | 27 Carpets | Registered | 2025 |
| Cigaragua 2258656 · TMA1276514 | Owner not shown | 34 Tobacco35 Advertising | Registered | 2024 |
| CASIRIS 2192694 · TMA1284497 · design | Hangzhou Zhongke Jiguang Technology Co., Ltd | 9 Electronics | Registered | 2025 |
| COSRX 2128293 · TMA1172882 · design | COSRX INC. | 5 Pharmaceuticals | Registered | 2023 |
| COSRX 2126859 · TMA1172847 · design | COSRX INC. | 3 Cosmetics | Registered | 2023 |
| COZYOURS 2124808 · TMA1187671 | Denem Publishing LP | 4 Oils | Registered | 2023 |
| CICARECOVERY 1978406 · TMA1148626 | LG H&H Co., LTD. | 3 Cosmetics | Registered | 2022 |
| CHOCOARROZ 1976761 · TMA1271928 · design | Owner not shown | 30 Coffee | Registered | 2024 |
| CASEROS 1899657 · TMA1083970 | Les Franchises Habaneros Inc. | 43 Restaurants | Registered | 2020 |
| CAESARS 1888530 · TMA1048060 · design | Caesars License Company, LLC | 27 Carpets | Registered | 2019 |
| CAESARS 1888527 · TMA1048057 | Caesars License Company, LLC | 27 Carpets | Registered | 2019 |
| CAESARS 1872301 · TMA1049735 · design | Caesars License Company, LLC | 20 Furniture24 Textiles | Registered | 2019 |
| CAESARS 1872300 · TMA1049720 | Caesars License Company, LLC | 20 Furniture24 Textiles | Registered | 2019 |
| CHECKERS 1861356 · TMA1091369 · design | Checkers Marketing Inc. | 35 Advertising37 Construction | Registered | 2021 |
| CESARES 1768642 · TMA1010909 · design | CDS FOODS INC./Les Aliments CDS Inc | 29 Meat30 Coffee31 Fresh+1 | Registered | 2018 |
| COUGARJET 1721928 · TMA993487 | DOMTAR INC. | 16 Paper | Registered | 2018 |
| COGRESS 1705771 · TMA1065126 | Cogress Limited | 35 Advertising36 Finance | Registered | 2019 |
| COCORIKO 1683579 · TMA999222 | 10774847 CANADA INC. | 9 Electronics35 Advertising38 Telecommunications+3 | Registered | 2018 |
| COCORIKO 1590213 · TMA895729 | 10774847 CANADA INC. | 38 Telecommunications42 Science45 Legal | Registered | 2015 |
| CHEESEWORKS 1496685 · TMA813615 | Little Qualicum Cheeseworks Ltd. | 29 Meat35 Advertising40 Treatment+1 | Registered | 2011 |
| CHEESEWERKS 1488757 · TMA882119 | an individual | 8 Hand9 Electronics11 Lighting+10 | Registered | 2014 |
| CAUSERAISING 1454792 · TMA779958 | FYI Communications and Marketing Services Ltd. | 36 Finance | Registered | 2010 |
| COQSOURCE 1424739 · TMA816116 · design | an individual | 5 Pharmaceuticals | Registered | 2012 |