| CONSORTIO 0924143 | Le gouvernement du Québec, représenté par la Ministre de l'Économie, de la Science et de l'Innovation | All goods and services | Protected | 2016 |
| CONSARIO 1883725 · TMA1083093 | PFIZER INC. | 5 Pharmaceuticals | Registered | 2020 |
| CENSORIO 1581107 · TMA923669 | Chisa Holdings Ltd. | 6 Metal19 Building36 Finance+2 | Registered | 2015 |
| CONSORTIOME 2281234 | COST-BRY PTY LTD | 42 Science44 Medical | Pending | 2023 |
| CONSORTIUM 1828087 · TMA1067151 | Ingram Publisher Services LLC | 39 Transport | Registered | 2019 |
| CONSORT 2101672 · TMA1222856 | an individual | 6 Metal | Registered | 2024 |
| CONCORDIX 1997234 · TMA1120826 | an individual | 5 Pharmaceuticals | Registered | 2022 |
| CONSURIS 1873678 · TMA1091597 | Owner not shown | 1 Chemicals5 Pharmaceuticals | Registered | 2021 |
| CONCORDIA 1796251 · TMA1048694 · design | Concordia Pharmaceuticals, Inc. S.À.R.L. | 5 Pharmaceuticals10 Medical | Registered | 2019 |
| CONSERVIA 1706332 · TMA1032240 | Boston Scientific Scimed, Inc. | 10 Medical | Registered | 2019 |
| CONCORDIX 1475123 · TMA891440 | an individual | 5 Pharmaceuticals29 Meat | Registered | 2014 |
| CONCORDIA 1074691 · TMA541453 | The Empire Life Insurance Company/L'Empire Compagnie d'Assurance-Vie | 36 Finance | Registered | 2001 |
| CONCORDIA 1002958 · TMA531739 · design | The Empire Life Insurance Company/L'Empire Compagnie d'Assurance-Vie | 36 Finance | Registered | 2000 |
| CONCORDIA 1002362 · TMA531727 | The Empire Life Insurance Company/L'Empire Compagnie d'Assurance-Vie | 36 Finance | Registered | 2000 |
| CONCORDIA 0913204 | CONCORDIA UNIVERSITY | All goods and services | Protected | 2001 |
| CONCORDIA 0900975 · design | CONCORDIA UNIVERSITY | All goods and services | Protected | 1978 |
| CONCORDIA 0900974 · design | CONCORDIA UNIVERSITY | All goods and services | Protected | 1978 |
| CONCORDIA 0621313 · TMA402482 | an individual | 4 Oils6 Metal9 Electronics+7 | Registered | 1992 |
| CONSOR 2198812 | Consor Intermediate, LLC | 39 Transport42 Science | Pending | 2022 |
| CONSERVACTION 0436412 · TMA246304 | P.H. Tech Inc. | 19 Building | Registered | 1980 |
| CANSORTIUM 1924881 · TMA1134449 | CAVERN CAPITAL HOLDING LLC | 1 Chemicals2 Paints3 Cosmetics+12 | Registered | 2022 |
| CONSORTECH 1631401 · TMA954426 | Solutions Consortech inc. | 9 Electronics35 Advertising41 Education+1 | Registered | 2016 |
| Concordium 2273014 | Owner not listed | 9 Electronics16 Paper36 Finance+2 | Pending | 2022 |
| CONSORTIAKIT 1044577 · TMA554152 | an individual | 35 Advertising38 Telecommunications42 Science+1 | Registered | 2001 |
| CONSOEURERIE 2171201 | 4552881 Canada Inc. | 6 Metal8 Hand9 Electronics+9 | Pending | 2022 |