| Consentia 1894837 · TMA1079999 | an individual | 35 Advertising | Registered | 2020 |
| CONSENZA 1514131 · TMA869946 | PureFood QoLp B.V. (a company organized and existing under the laws of the kingdom of the Netherlands) | 5 Pharmaceuticals29 Meat30 Coffee+1 | Registered | 2014 |
| CONSONA 1358824 · TMA785328 | Aptean, Inc. | 9 Electronics16 Paper35 Advertising+3 | Registered | 2010 |
| CONGENICA 2054917 · TMA1234235 · design | Congenica Ltd | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2024 |
| CONSONITY 1795159 · TMA1046103 | Merck Sharp & Dohme Corp. | 5 Pharmaceuticals | Registered | 2019 |
| CANSUNNA 2373024 · design | NINGBO YANSUN IMP.&EXP. CO. LTD. | 20 Furniture | Pending | 2025 |
| Conscnt 2267650 | an individual | 25 Clothing | Pending | 2023 |
| ConSens 2262431 | Owner not listed | 12 Vehicles40 Treatment42 Science | Pending | 2023 |
| CANSINOBIO 2089237 · TMA1214025 · design | CANSINO BIOLOGICS INC. | 5 Pharmaceuticals | Registered | 2023 |
| Conscience 1437350 · TMA768123 | Les Industries Rouillard inc. | 20 Furniture | Registered | 2010 |
| CENSIMLIS 2044396 · TMA1272167 | Biogen International GmbH | 5 Pharmaceuticals | Registered | 2024 |
| COMZENICA 1857131 · TMA1080659 | BeiGene, Ltd. c/o Mourant Ozannes Corporate Services (Cayman) Limited, a legal entity | 5 Pharmaceuticals | Registered | 2020 |
| CONCENTRA 1741130 · TMA986425 · design | 101055565 Saskatchewan Ltd. | 35 Advertising36 Finance41 Education+1 | Registered | 2017 |
| CONSENSUS 1591609 · TMA946437 | LOVELAND PRODUCTS, INC. | 1 Chemicals | Registered | 2016 |
| CONSONANT 1369977 · TMA726887 | CONSONANT PRODUCTS CORPORATION | 3 Cosmetics | Registered | 2008 |
| CONCENTRA 1212636 · TMA691649 | 101055565 Saskatchewan Ltd. | 35 Advertising36 Finance41 Education+1 | Registered | 2007 |
| CONSONENZ 2098704 | an individual | 1 Chemicals5 Pharmaceuticals31 Fresh | Pending | 2021 |
| CONSENSUS 2086129 | Consensus Cloud Solutions International Limited | 35 Advertising38 Telecommunications42 Science | Pending | 2021 |
| CONSENSUS 2086122 · design | Consensus Cloud Solutions International Limited | 35 Advertising38 Telecommunications42 Science | Pending | 2021 |
| CONSENSUS 0900398 | DEPARTMENT OF INDUSTRY, TRADE AND COMMERCE | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1974 |
| CONSCIENTIOUS 1854012 · TMA1065202 · design | TAIWAN RIWAY CO. LTD. a legal entity | 3 Cosmetics | Registered | 2019 |
| chumxiny 2263681 · TMA1284776 | Shanxi Changsou Technology Co. Ltd. | 12 Vehicles | Registered | 2025 |
| ChengHongXing 2259379 · TMA1277901 | an individual | 9 Electronics | Registered | 2024 |
| Camcunoy 2258053 · TMA1276450 | Putian Mouguang Trading Co. Ltd. | 21 Housewares | Registered | 2024 |
| CNXIN 2246982 · TMA1265896 | Owner not listed | 11 Lighting | Registered | 2024 |