| CompuCool 1774663 · TMA977565 | TECHNOLOGIES E4 INC. | 11 Lighting | Registered | 2017 |
| COMPACTOR 1739371 · TMA999054 · design | CIE EUROPE (Société par actions simplifiée) | 6 Metal9 Electronics14 Jewellery+3 | Registered | 2018 |
| COMPACTOR 1622005 · TMA900778 · design | CIE EUROPE (Société par actions simplifiée) | 16 Paper18 Leather20 Furniture | Registered | 2015 |
| COMPACTOR 1552149 · TMA868110 | CIE EUROPE (Société par actions simplifiée) | 16 Paper18 Leather20 Furniture | Registered | 2014 |
| COMPUCOM 1453901 · TMA807640 | COMPUCOM SYSTEMS, INC. | 35 Advertising37 Construction39 Transport+1 | Registered | 2011 |
| COMPUZOL 2135014 | THE LUBRIZOL CORPORATION | 4 Oils | Pending | 2021 |
| COMPUCESSORY 1243837 · TMA658851 | S.P. Richards Company | 3 Cosmetics6 Metal7 Machines+13 | Registered | 2006 |
| COMPUCESSORY 1243692 · TMA659183 · design | S.P. Richards Company | 3 Cosmetics7 Machines8 Hand+3 | Registered | 2006 |
| COMPUCENTRE 0448959 · TMA249950 | SYSTÈMES TMN INC. | 7 Machines8 Hand9 Electronics+10 | Registered | 1980 |
| COMPUCLEVER 2277470 | RICHFIELD HOLDINGS INC | 20 Furniture | Pending | 2023 |
| COMPUSOFT 2066746 · TMA1216834 · design | an individual | 9 Electronics35 Advertising37 Construction+1 | Registered | 2024 |
| COMPOCEL 1892544 · TMA1097264 · design | an individual | 6 Metal12 Vehicles17 Rubber+1 | Registered | 2021 |
| COMPUSTAR 1650524 · TMA932186 | Firstech, LLC | 9 Electronics | Registered | 2016 |
| COMPOSER 1567374 · TMA853037 | JAMF Software, LLC | 9 Electronics | Registered | 2013 |
| COMPOSER 1567372 · TMA871141 · design | JAMF Software, LLC | 9 Electronics | Registered | 2014 |
| COMPOSER 1425537 · TMA798006 | Lensbaby, Inc. | 9 Electronics | Registered | 2011 |
| CompCote 1266989 · TMA729202 | Compcote International Inc. | 40 Treatment | Registered | 2008 |
| COMPACPLUS 1215008 · TMA676878 · design | MANN+HUMMEL GmbH | 7 Machines37 Construction | Registered | 2006 |
| COMPUSPOT 1082279 · TMA567229 | A.M.H. CANADA LTÉE | 3 Cosmetics7 Machines | Registered | 2002 |
| COMPOSIBOR 1005330 · TMA535274 | U.S. BORAX INC. | 2 Paints | Registered | 2000 |
| COMPUCLEAN 1003510 · TMA548349 | SPARTAN CHEMICAL COMPANY, INC. (OHIO, CORPORATION) | 9 Electronics | Registered | 2001 |
| COMPUCAGE 0881526 · TMA547662 | Compucage International Inc. | 9 Electronics20 Furniture | Registered | 2001 |
| COMPCORP 0700031 · TMA412664 | Canadian Life and Health Insurance Compensation Corporation Sociéte Canadienne D'indemnisation Pour Les Assurances De Personnes | 36 Finance | Registered | 1993 |
| COMPUSOFT 0657711 · TMA388974 | an individual | 9 Electronics16 Paper35 Advertising+1 | Registered | 1991 |
| COMPUSCOPE 0604829 · TMA358946 | Gage Applied Technologies Inc. | 9 Electronics | Registered | 1989 |