| CONSMOS 2144995 · TMA1186715 · design | LINYI CONSMOS IMP. & EXP. CO. LTD. | 19 Building | Registered | 2023 |
| CONSONA 1358824 · TMA785328 | Aptean, Inc. | 9 Electronics16 Paper35 Advertising+3 | Registered | 2010 |
| Comsoon 2193032 · TMA1234878 | Horizon Technology Inc. | 9 Electronics | Registered | 2024 |
| CANSON 2129375 · TMA1219116 · design | CANSON | 16 Paper | Registered | 2024 |
| CINCOM 0647188 · TMA403764 | Citizen Tokei Kabushiki Kaisha also trading as Citizen Watch Co. Ltd. | 7 Machines | Registered | 1992 |
| CINCOM 0624622 · TMA365980 | CINCOM SYSTEMS, INC. | 9 Electronics16 Paper35 Advertising+1 | Registered | 1990 |
| CANSON 0466756 · TMA271890 · design | Owner not shown | 16 Paper19 Building | Registered | 1982 |
| Conscnt 2267650 | an individual | 25 Clothing | Pending | 2023 |
| ConSens 2262431 | Owner not listed | 12 Vehicles40 Treatment42 Science | Pending | 2023 |
| CANSIM 0900628 | DEPARTMENT OF STATISTICS CANADA | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1972 |
| CONSONITY 1795159 · TMA1046103 | Merck Sharp & Dohme Corp. | 5 Pharmaceuticals | Registered | 2019 |
| CONSONANT 1369977 · TMA726887 | CONSONANT PRODUCTS CORPORATION | 3 Cosmetics | Registered | 2008 |
| CONSUMERS 1164389 · TMA661177 | Enercare Home and Commercial Services Limited Partnership | 9 Electronics16 Paper35 Advertising+7 | Registered | 2006 |
| CONSUMERS 1140615 · TMA641141 | Enercare Home and Commercial Services Limited Partnership | 35 Advertising36 Finance37 Construction+4 | Registered | 2005 |
| CONSONENZ 2098704 | an individual | 1 Chemicals5 Pharmaceuticals31 Fresh | Pending | 2021 |
| 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 |
| CANSCAN 2246923 · TMA1251633 | Owner not listed | 42 Science44 Medical | Registered | 2024 |
| changxingjia 2245274 · TMA1272757 | Zhuzhou Fanwan E-commerce Co. Ltd | 9 Electronics | Registered | 2024 |
| CANYSON 2243610 · TMA1264273 · design | Fo shan shi Kangyushun E-commerce Co. Ltd | 14 Jewellery | Registered | 2024 |
| CNSUNWAY 2230355 · TMA1253917 | an individual | 11 Lighting28 Toys | Registered | 2024 |
| CANCAN 2226188 · TMA1251301 | an individual | 14 Jewellery | Registered | 2024 |
| Chuancheng 2217817 · TMA1245543 | Shenzhen Chuancheng Electronic Commerce Co., Ltd. | 7 Machines | Registered | 2024 |