| CONSTRUIRE 1538767 · TMA833152 · design | ASSOCIATION DE LA CONSTRUCTION DU QUÉBEC | 9 Electronics16 Paper41 Education | Registered | 2012 |
| CONSTEED 2250027 | Owner not listed | 9 Electronics10 Medical18 Leather+2 | Pending | 2022 |
| CONSTRUCT 2206877 · TMA1282844 | an individual | 20 Furniture41 Education | Registered | 2025 |
| CONSTRUCTR 2153627 · TMA1207601 · design | Constructr Limited | 9 Electronics | Registered | 2023 |
| CONSTRUCTEX 2065078 · TMA1132921 | Bridon International Limited | 6 Metal | Registered | 2022 |
| CONSTRUCT 2023576 · TMA1160986 | Vans, Inc. | 18 Leather | Registered | 2023 |
| CONSTEL 2022715 · TMA1115415 · design | UPL LTD. | 1 Chemicals5 Pharmaceuticals | Registered | 2021 |
| CONSTRICTOR 1923585 · TMA1105419 | HUBBELL INCORPORATED | 9 Electronics | Registered | 2021 |
| CONSTRUCTOR 1919698 · TMA1154553 | an individual | 6 Metal9 Electronics20 Furniture | Registered | 2022 |
| COINSTREET 1891636 · TMA1076037 · design | COINSTREET PARTNERS LIMITED | 35 Advertising36 Finance | Registered | 2020 |
| CONSTRUCTOR 1770288 · TMA1069841 | YSOLUTION Limited | 9 Electronics16 Paper28 Toys+3 | Registered | 2020 |
| CONSTRUCT 1745420 · TMA978159 | Eagle View Technologies, Inc. | 42 Science | Registered | 2017 |
| CONSTRUCT 1677254 · TMA919177 | Construct Electrical Inc. | 37 Construction | Registered | 2015 |
| Constellio 1636325 · TMA914749 | CONSTELLIO INC. | 9 Electronics | Registered | 2015 |
| CONSTANCE 1565737 · TMA892235 | an individual | 18 Leather | Registered | 2014 |
| CONSTELLIUM 1533558 · TMA903093 | an individual | 1 Chemicals2 Paints6 Metal+8 | Registered | 2015 |
| CONSTELLA 1485579 · TMA878286 | Ironwood Pharmaceuticals, Inc. | 5 Pharmaceuticals | Registered | 2014 |
| CONSTRICTOR 1410896 · TMA754923 | Halliburton Energy Services, Inc. | 7 Machines | Registered | 2009 |
| CONSTRUX 1246461 · TMA789978 | Blackstone Medical, Inc. | 9 Electronics10 Medical | Registered | 2011 |
| CONSTECO 0990795 · NFLD795 | CONSOLIDATED STEEL CORPORATION (A DELAWARE CORPORATION) | 1 Chemicals6 Metal7 Machines+9 | Registered | 1919 |
| CONSTRUX 0897865 · TMA526045 | CONSTRUX SOFTWARE BUILDERS, INC. | 9 Electronics35 Advertising41 Education+1 | Registered | 2000 |
| CONSTRUX 0496619 · TMA296085 | Mattel, Inc. | 28 Toys | Registered | 1984 |
| CONSTRIVE 2363414 · design | Conprofe Technology Group Co. Ltd. | 7 Machines | Pending | 2024 |
| CONSTANCE 2341955 · design | Owner not listed | 25 Clothing35 Advertising | Pending | 2024 |
| CONSTRICTOR 2305698 | Owner not listed | 6 Metal | Pending | 2023 |