| CAREGUAR 1556407 · TMA892952 | an individual | 1 Chemicals5 Pharmaceuticals29 Meat+2 | Registered | 2014 |
| CRAGAR 0313363 · TMA161878 | The Carlstar Group LLC | 7 Machines9 Electronics12 Vehicles | Registered | 1969 |
| COREGUARD 1532231 · TMA892246 | Cabinetworks Group Michigan, LLC | 20 Furniture | Registered | 2014 |
| CAREGUARD 1440145 · TMA775224 | an individual | 6 Metal9 Electronics11 Lighting+2 | Registered | 2010 |
| CrewGuard 1431379 · TMA780278 | Shoes For Crews, LLC a limited liability company of the State of Florida | 25 Clothing | Registered | 2010 |
| craZwear 1392506 · TMA797558 | 1447339 Ontario Inc. and Richard Philippe Jr. Claude Boudreault, a partnership | 5 Pharmaceuticals9 Electronics12 Vehicles+5 | Registered | 2011 |
| CRAGIEER 2300862 | an individual | 21 Housewares | Pending | 2023 |
| CORESEARCH 1608357 · TMA884958 · design | an individual | 3 Cosmetics5 Pharmaceuticals35 Advertising | Registered | 2014 |
| CERESER 2128068 · TMA1223680 | an individual | 19 Building | Registered | 2024 |
| CRUZER 1404503 · TMA779560 · design | SUNGEUM MUSIC CO., LTD. | 9 Electronics15 Musical | Registered | 2010 |
| CRUZER 1259277 · TMA690362 | HEYS INTERNATIONAL LTD. | 18 Leather | Registered | 2007 |
| CRUZER 1232988 · TMA753042 | Braun GmbH | 8 Hand | Registered | 2009 |
| CRUZER 1146749 · TMA611350 | SanDisk LLC | 9 Electronics | Registered | 2004 |
| Crokar 2082396 | an individual | 20 Furniture | Pending | 2021 |
| CRACKWEAR 1718307 · TMA1052021 | G & M Renew-A-Krete Ltd. | 25 Clothing | Registered | 2019 |
| CARESHARE 1499435 · TMA813839 | TELUS Corporation | 35 Advertising42 Science44 Medical | Registered | 2011 |
| COREGRADE 0928595 · design | MCMASTER UNIVERSITY | All goods and services | Protected | 2024 |
| CORRGUARD 0726113 · TMA493487 | ANGUS Chemical Company | 1 Chemicals | Registered | 1998 |
| CareChart 2242286 | Polar Valley Investments Ltd. a legal entity | 9 Electronics35 Advertising38 Telecommunications+3 | Pending | 2023 |
| CRESCERA 2227513 · TMA1252692 | BASF Agricultural Solutions Canola US LLC | 1 Chemicals31 Fresh | Registered | 2024 |
| CORGUARD 1823476 · TMA1037548 | Innocor, Inc. | 17 Rubber | Registered | 2019 |
| CRUISAIR 1613089 · TMA914473 | an individual | 9 Electronics11 Lighting37 Construction | Registered | 2015 |
| CREACORE 1530390 · TMA836907 | Northern Innovations Holding Corp. | 5 Pharmaceuticals | Registered | 2012 |
| CARECARD 1382762 · TMA816562 | Mann Motor Products Ltd. | 35 Advertising37 Construction39 Transport | Registered | 2012 |
| CREASORB 1356312 · TMA786033 | Evonik Superabsorber GmbH | 1 Chemicals35 Advertising | Registered | 2010 |