| 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 |
| COMPAKBLUE 1463331 · TMA831733 | Owner not shown | 7 Machines11 Lighting40 Treatment | Registered | 2012 |
| ComboCard 0907635 | HER MAJESTY THE QUEEN IN RIGHT OF ONTARIO AS REPRESENTED BY THE MINISTRY OF TRANSPORTATION | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1995 |
| CompactMD 2156800 · TMA1207839 | an individual | 44 Medical | Registered | 2023 |
| COMPOSAD 1995930 · TMA1133898 · design | an individual | 20 Furniture | Registered | 2022 |
| COMPOSED 1705798 · TMA984843 | KOHLER CO. | 6 Metal11 Lighting21 Housewares | Registered | 2017 |
| Compactdry 1697839 · TMA936562 | NISSUI PHARMACEUTICAL CO. LTD. | 5 Pharmaceuticals | Registered | 2016 |
| COMPACTMAG 1657622 · TMA957784 | an individual | 6 Metal | Registered | 2016 |
| COMBOCARE 1650840 · TMA903689 | Roscoe Medical, Inc. | 10 Medical | Registered | 2015 |
| COMPUSTAR 1650524 · TMA932186 | Firstech, LLC | 9 Electronics | Registered | 2016 |
| CompackHeat 1509231 · TMA832332 | Armserv Contracting Inc. | 11 Lighting | Registered | 2012 |
| Compak 1487080 · TMA796311 | Les Industries Fibrobec inc. | 12 Vehicles | Registered | 2011 |
| COMPAK 1486264 · TMA796301 · design | Les Industries Fibrobec inc. | 12 Vehicles | Registered | 2011 |
| Compaspan 1379385 · TMA736897 | SpandrelTech Ltd. | 6 Metal | Registered | 2009 |
| COMPOSTAR 1258329 · TMA713948 | POLYSTAR PACKAGING INC. | 16 Paper | Registered | 2008 |
| COMPCARE 1225123 · TMA676004 | Goodman Manufacturing Company, L.P. (a Texas corporation) | 36 Finance | Registered | 2006 |
| COMPOSIBOR 1005330 · TMA535274 | U.S. BORAX INC. | 2 Paints | Registered | 2000 |
| COMPACTA 0742649 · TMA469099 | Ergotron, Inc. | 17 Rubber20 Furniture | Registered | 1997 |
| COMPUSMART 0734397 · TMA432070 | Hartco Inc. | 35 Advertising37 Construction38 Telecommunications+3 | Registered | 1994 |
| COMPCORP 0700031 · TMA412664 | Canadian Life and Health Insurance Compensation Corporation Sociéte Canadienne D'indemnisation Pour Les Assurances De Personnes | 36 Finance | Registered | 1993 |
| COMPAK 0564688 · TMA333933 | The Procter & Gamble Company | 5 Pharmaceuticals | Registered | 1987 |
| CompactStar 2215329 | Owner not shown | 9 Electronics | Pending | 2022 |
| COMPCLOUD 2163332 | Salary.com, LLC | 42 Science | Pending | 2022 |