| CONTEGRA 1045981 · TMA599601 | MEDTRONIC, INC. a Minnesota corporation | 7 Machines | Registered | 2004 |
| CantaGreen 2089810 · TMA1236874 | Yiwu Duchuang E-business Co., Ltd. | 21 Housewares | Registered | 2024 |
| CONETASTIC 1753608 · TMA968838 | Wire and Cable Specialties, Inc. | 8 Hand | Registered | 2017 |
| Contagious 2277867 | Contagious Incorporated | 9 Electronics25 Clothing35 Advertising+5 | Pending | 2023 |
| CONTIGO 2223537 · TMA1256475 | The Coleman Company, Inc. | 21 Housewares | Registered | 2024 |
| CONTUCCI 2153154 · TMA1254823 | Owner not shown | 33 Wine | Registered | 2024 |
| CONTAKT 1984597 · TMA1121565 · design | Umdasch Group NewCon GmbH | 9 Electronics35 Advertising37 Construction+1 | Registered | 2022 |
| CONTACT 1954991 · TMA1234135 | PLAY'N GO MARKS LIMITED | 9 Electronics28 Toys41 Education | Registered | 2024 |
| CENTIGRAM 1901884 · TMA1075627 | Centigram International, Ltd. | 36 Finance | Registered | 2020 |
| Contact 1803080 · TMA989810 | NORAC CONCEPTS, INC. | 1 Chemicals | Registered | 2018 |
| CONTACT 1710107 · TMA981556 | This is Blueprint Management Ltd. | 9 Electronics16 Paper25 Clothing+2 | Registered | 2017 |
| CONTACT 1707156 · TMA949838 | David Astley & Company Inc. | 25 Clothing | Registered | 2016 |
| CONTEGA 1656006 · TMA912360 | Biologische Insel Lothar Moll GmbH & Co. KG | 1 Chemicals17 Rubber | Registered | 2015 |
| CONTACK 1628926 · TMA908471 | GESTION IMMOBILIÈRE GT INC. | 19 Building | Registered | 2015 |
| CantAgeUs 1544685 · TMA836348 | an individual | 18 Leather25 Clothing26 Sewing | Registered | 2012 |
| CONTACT 1532499 · TMA876499 | Bunzl IP Holdings, LLC | 21 Housewares | Registered | 2014 |
| CONTACTOR 1509467 · TMA824055 | Advanced Drainage Systems, Inc. | 6 Metal19 Building | Registered | 2012 |
| CONTIGO 1499297 · TMA822215 | The Coleman Company, Inc. | 21 Housewares | Registered | 2012 |
| CONTACT 1496828 · TMA860746 · design | NATIONAL TOUR ASSOCIATION, INC. a legal entity | 35 Advertising39 Transport | Registered | 2013 |
| CONTACT 1395344 · TMA756373 | ConvaTec Inc. | 9 Electronics16 Paper | Registered | 2010 |
| CONTACT 1381162 · TMA753810 · design | Fempro Consumer Products ULC | 5 Pharmaceuticals | Registered | 2009 |
| CONTACT 1366959 · TMA780646 | CONTINENTAL REIFEN DEUTSCHLAND GMBH | 7 Machines12 Vehicles17 Rubber | Registered | 2010 |
| CONTAX 1339162 · TMA719740 | Mühlbauer Technology GmbH | 5 Pharmaceuticals | Registered | 2008 |
| CONTACT 1322777 · TMA747826 | Owner not shown | 14 Jewellery | Registered | 2009 |
| CONTACT 1302920 · TMA697110 | Contact Toronto Photography Association | 16 Paper41 Education | Registered | 2007 |