| CARMEUSE 1557730 · TMA862688 | Carmeuse Lime (Canada) Ltd. | 35 Advertising | Registered | 2013 |
| CARMEUSE 1557729 · TMA862687 · design | Carmeuse Lime (Canada) Ltd. | 35 Advertising | Registered | 2013 |
| CRIMES 1861217 · TMA1069165 | Rothbury Wines Pty Ltd | 32 Beer33 Wine | Registered | 2020 |
| CARMEX 1810799 · TMA1031916 · design | Carma Laboratories, Inc. | 3 Cosmetics5 Pharmaceuticals | Registered | 2019 |
| CARMEX 1595509 · TMA901098 · design | Carma Laboratories, Inc. | 3 Cosmetics | Registered | 2015 |
| CARMEX 1442335 · TMA809164 | Carma Laboratories, Inc. | 3 Cosmetics | Registered | 2011 |
| CERMEX 0863080 · TMA516340 | an individual | 7 Machines9 Electronics20 Furniture+2 | Registered | 1999 |
| CARMEX 0753936 · TMA449108 · design | Carma Laboratories, Inc. | 5 Pharmaceuticals | Registered | 1995 |
| CORMACH 0707022 · TMA417143 · design | an individual | 7 Machines | Registered | 1993 |
| CARMEX 0657210 · TMA385983 | Carma Laboratories, Inc. | 3 Cosmetics5 Pharmaceuticals | Registered | 1991 |
| CORMEX 0616271 · TMA362239 | Metrix Research Inc. | 16 Paper41 Education | Registered | 1989 |
| CARNES 0406284 · TMA231208 · design | CARNES COMPANY, INC. (A WISCONSIN CORPORATION) | 11 Lighting | Registered | 1978 |
| CARNES 0356637 · TMA192481 | CARNES COMPANY, INC. (A WISCONSIN CORPORATION) | 11 Lighting | Registered | 1973 |
| CARMS 2278652 | Green Sky Sustainability Consulting Inc. | 35 Advertising42 Science | Pending | 2023 |
| CORMACH 2147987 | an individual | 7 Machines12 Vehicles | Pending | 2021 |
| ChurnZero 2263826 · TMA1283339 | ChurnZero, Inc. | 9 Electronics42 Science | Registered | 2025 |
| CHROMAGLOW 2252437 · TMA1272831 | Big Star Lights Canada Inc. | 11 Lighting35 Advertising | Registered | 2024 |
| Cornstock 2240622 · TMA1261516 | an individual | 35 Advertising41 Education | Registered | 2024 |
| CHROMASILK 2240469 · TMA1240513 | Owner not listed | 3 Cosmetics | Registered | 2024 |
| CHROMAKEY 2238537 · TMA1258330 | an individual | 42 Science44 Medical | Registered | 2024 |
| CrankLoc 2234832 · TMA1256737 | Apex Oilfield Equipment (Qingdao) Co., Ltd. | 7 Machines | Registered | 2024 |
| crownslota 2221986 · TMA1248679 | Beijing Guanduo Network Technology Co., Ltd. | 9 Electronics | Registered | 2024 |
| cyrank 2220120 · TMA1247003 | an individual | 21 Housewares | Registered | 2024 |
| Crimson 2213832 · TMA1243204 | Per Vices Corporation | 9 Electronics | Registered | 2024 |
| CHROMOCYMATICS 2212387 · TMA1244214 · design | an individual | 44 Medical | Registered | 2024 |