| CLAMOR 1957145 · TMA1213671 | Civic Center Audio, LLC | 9 Electronics41 Education | Registered | 2023 |
| Calamaro 1775855 · TMA983148 | Café Castelo inc. | 30 Coffee | Registered | 2017 |
| COLMAR 1760782 · TMA983335 · design | Owner not shown | 3 Cosmetics9 Electronics18 Leather+4 | Registered | 2017 |
| COLMAR 1696848 · TMA938946 · design | Owner not shown | 18 Leather25 Clothing28 Toys | Registered | 2016 |
| COLMAR 1440488 · TMA819868 · design | Owner not shown | 9 Electronics18 Leather25 Clothing+1 | Registered | 2012 |
| COLMAR 0546997 · TMA332231 · design | Owner not shown | 24 Textiles25 Clothing | Registered | 1987 |
| COLMAR 0427594 · TMA245181 · design | Owner not shown | 25 Clothing | Registered | 1980 |
| Coolinario 2361067 | Fix It EZ Inc. | 1 Chemicals29 Meat30 Coffee | Pending | 2024 |
| COLOMER 1792 2211090 · TMA1230674 · design | Henan Prosper & Colomer Moda Co. Ltd. | 12 Vehicles18 Leather20 Furniture+3 | Registered | 2024 |
| CULINARE 2168344 · TMA1259408 | DKB Household UK Limited | 7 Machines8 Hand9 Electronics+1 | Registered | 2024 |
| CLEANRF 2150581 · TMA1205301 | WATERFURNACE INTERNATIONAL INC. | 11 Lighting | Registered | 2023 |
| CULINARE 2138115 · TMA1259285 · design | DKB Household UK Limited | 7 Machines8 Hand9 Electronics+1 | Registered | 2024 |
| CALMERGÉ 2116202 · TMA1167158 | Calmerge, LLC | 9 Electronics42 Science | Registered | 2023 |
| Clinware 2096723 · TMA1173645 | Wenzhou Junyin International Trade Co. Ltd. | 11 Lighting | Registered | 2023 |
| CLEAMOROUS 2079691 · TMA1180226 | Alcor Media Group Inc. | 27 Carpets | Registered | 2023 |
| CALAMARINE 2011814 · TMA1113122 | an individual | 5 Pharmaceuticals | Registered | 2021 |
| Calmeroos 1998802 · TMA1200984 | Wanna Play Products Inc. | 28 Toys | Registered | 2023 |
| Claoner 1974466 · TMA1269245 | Wuhan Claoner Technology Co.,Ltd | 11 Lighting | Registered | 2024 |
| COLYMER 1967408 · TMA1233107 | VAN ENTEK ENTERPRISES LTD. | 1 Chemicals3 Cosmetics5 Pharmaceuticals+4 | Registered | 2024 |
| Clawhammer 1949369 · TMA1119518 | an individual | 30 Coffee | Registered | 2022 |
| CloneR 1868152 · TMA1050854 | STEMCELL Technologies Canada Inc. | 1 Chemicals5 Pharmaceuticals | Registered | 2019 |
| COLMORE 1846831 · TMA1087201 | an individual | 35 Advertising36 Finance42 Science | Registered | 2020 |
| CLEANHARBORS 1810622 · TMA1057671 · design | Clean Harbors, Inc. | 35 Advertising37 Construction39 Transport+4 | Registered | 2019 |
| CSLMARKETIQ 1809787 · TMA997968 · design | Cameron Stewart LifeScience Canada Inc. | 35 Advertising42 Science | Registered | 2018 |
| CLAYMORE 1796607 · TMA1041115 | Delta Faucet Company | 11 Lighting | Registered | 2019 |