| CURRENCY 1622233 · TMA881527 | JPI Limited | 14 Jewellery | Registered | 2014 |
| CURRENCY 1412224 · TMA760163 | CTI Paper USA, Corp. | 16 Paper | Registered | 2010 |
| CORENCE 1849201 · TMA1027678 | BLANCO GmbH + Co KG | 11 Lighting | Registered | 2019 |
| CURRENEX 1350691 · TMA720551 | CURRENEX, INC. (a Delaware corporation) | 36 Finance | Registered | 2008 |
| CERENCE 1996247 | Cerence Operating Company | 9 Electronics42 Science | Pending | 2019 |
| CERENCE 1996246 · design | Cerence Operating Company | 9 Electronics42 Science | Pending | 2019 |
| CURRENSIA 1337381 · TMA713051 | HOYU KABUSHIKI KAISHA, ALSO TRADING AS HOYU CO. LTD. | 3 Cosmetics | Registered | 2008 |
| CurrencyCycle 2371001 | Giesecke+Devrient Currency Technology GmbH | 9 Electronics35 Advertising42 Science+1 | Pending | 2024 |
| CURRENCYCLOUD 1852220 · TMA1094777 · design | The Currency Cloud Group Limited | 9 Electronics36 Finance42 Science | Registered | 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 |
| CHRONICLE 2207517 · TMA1246446 · design | an individual | 42 Science | Registered | 2024 |
| CRUNCHY 2203073 · TMA1239917 | REFINED PROFILE INC., a legal entity | 10 Medical | Registered | 2024 |
| CRIMECAST 2199526 · TMA1220792 | Cap Index, Inc. | 35 Advertising42 Science | Registered | 2024 |
| CRANEKIT 2193894 · TMA1264065 · design | Chongqing Dazu Yongli Cutting Tool Co., Ltd | 8 Hand | Registered | 2024 |
| CRENESSITY 2179399 · TMA1284434 | Neurocrine Biosciences, Inc. | 5 Pharmaceuticals | Registered | 2025 |
| CRUNCHCUP 2177984 · TMA1227277 | Crunch Tech, Inc. | 21 Housewares | Registered | 2024 |