| CALLINGTON 1976179 · TMA1171838 | Callington Haven Pty Ltd | 1 Chemicals2 Paints3 Cosmetics+2 | Registered | 2023 |
| CLEANSTART 1420979 · TMA763387 | CANADIAN STANDARDS ASSOCIATION | 16 Paper41 Education42 Science | Registered | 2010 |
| CLEANSTART 1325967 · TMA699700 | Nufarm Agriculture Inc. | 5 Pharmaceuticals | Registered | 2007 |
| COOLINGCARE 1900427 · TMA1118192 · design | Owner not shown | 2 Paints7 Machines35 Advertising+2 | Registered | 2022 |
| COLLINGWOOD 1813299 · TMA1103675 | Sazerac Brands, LLC. | 33 Wine | Registered | 2021 |
| CleanSpan 1690651 · TMA932283 | PLASTRUCT CANADA INC. | 19 Building | Registered | 2016 |
| CLANSMAN 1678427 · TMA1063637 | LOCH LOMOND DISTILLERS LIMITED | 33 Wine | Registered | 2019 |
| CELLANKTON 1447853 · TMA807415 | Canadian Pacific Algae Inc. | 3 Cosmetics5 Pharmaceuticals | Registered | 2011 |
| CLAYMAKER 2262002 · TMA1281338 | CLAYNOSAURZ INC. | 28 Toys | Registered | 2025 |
| CLAYMAKER 2262000 · TMA1281337 | CLAYNOSAURZ INC. | 9 Electronics35 Advertising41 Education+1 | Registered | 2025 |
| coolmax 2260153 · TMA1277969 | Owner not shown | 34 Tobacco | Registered | 2024 |
| CLENSTELFIO 2249095 · TMA1261944 | Owner not shown | 5 Pharmaceuticals | Registered | 2024 |
| CALONOX 2237128 · TMA1251608 | Owner not listed | 9 Electronics | Registered | 2024 |
| CLAYNOSAURZ 2234825 · TMA1256734 | CLAYNOSAURZ INC. | 9 Electronics21 Housewares25 Clothing+4 | Registered | 2024 |
| CLINCHER 2225755 · TMA1251233 | NORD GEAR LIMITED/ENGRENAGES NORD LIMITEE | 7 Machines | Registered | 2024 |
| CLEANGUARD 2224923 · TMA1250151 | The Procter & Gamble Company | 5 Pharmaceuticals | Registered | 2024 |
| COOLOONG 2217840 · TMA1246728 · design | Cooloong Canada Inc. | 35 Advertising | Registered | 2024 |
| CLINISTIX 2215689 · TMA1233975 | SIEMENS HEALTHCARE DIAGNOSTICS INC. | 1 Chemicals5 Pharmaceuticals | Registered | 2024 |
| CLEANSHIELD 2212364 · TMA1243101 | Kimberly-Clark Worldwide, Inc. | 5 Pharmaceuticals | Registered | 2024 |
| CylanceAVERT 2209807 · TMA1224664 | Cylance Inc. | 9 Electronics42 Science | Registered | 2024 |
| CylancePERSONA 2209806 · TMA1224663 | Cylance Inc. | 9 Electronics42 Science | Registered | 2024 |
| CylanceGATEWAY 2209805 · TMA1224662 | Cylance Inc. | 9 Electronics42 Science | Registered | 2024 |
| Caliwiness 2201448 · TMA1238728 | Chengdu Jiajuxiankang Trading Co., Ltd. | 21 Housewares | Registered | 2024 |
| 10. 4. 100 CHALLENGE 2200604 · TMA1268452 · design | ELITE SPORTS PHILANTHROPY PTY. LTD | 25 Clothing35 Advertising36 Finance+1 | Registered | 2024 |
| CLIMASHIELD 2195569 · TMA1237267 | BENJAMIN MOORE & CO. LIMITED | 2 Paints | Registered | 2024 |