| CTRS 1058094 · TMA571177 | NATIONAL COUNCIL FOR THERAPEUTIC RECREATION CERTIFICATION, INC. a corporation of Texas | 44 Medical | Registered | 2002 |
| CITRIX 1979435 · TMA1148652 | Topix Pharmaceuticals, Inc. | 3 Cosmetics | Registered | 2022 |
| CITRIX 1760622 · TMA1065533 | CITRIX SYSTEMS, INC. | 9 Electronics35 Advertising38 Telecommunications+3 | Registered | 2019 |
| CITRAX 1400650 · TMA756394 | Kyodo Yushi Co. Ltd. | 4 Oils | Registered | 2010 |
| CITRIX 1000817 · TMA538843 · design | CITRIX SYSTEMS, INC. | 9 Electronics | Registered | 2000 |
| CITRIX 0771945 · TMA456026 | CITRIX SYSTEMS, INC. | 9 Electronics | Registered | 1996 |
| CITRAX 0604165 · TMA356300 | Wood Wyant Canada Inc. | 3 Cosmetics | Registered | 1989 |
| CITRIX 2075544 · design | CITRIX SYSTEMS, INC. | 9 Electronics35 Advertising37 Construction+4 | Pending | 2020 |
| CTRAK 1593960 · TMA895854 | CommScope, Inc. of North Carolina | 35 Advertising | Registered | 2015 |
| CATURIX 1920704 · TMA1126513 | an individual | 9 Electronics16 Paper18 Leather | Registered | 2022 |
| CYTREXX 1724867 · TMA940990 | Owner not shown | 35 Advertising41 Education | Registered | 2016 |
| CETERIX 1604296 · TMA888354 | Ceterix Orthopaedics, Inc. | 10 Medical | Registered | 2014 |
| CataRex 2331307 | an individual | 1 Chemicals7 Machines11 Lighting | Pending | 2024 |
| CITRUSMART 2183012 · TMA1243959 · design | NEXUS INGREDIENT PTY LTD | 1 Chemicals | Registered | 2024 |
| CITROCOL 2132412 · TMA1229297 · design | SA Citrique Belge NV | 31 Fresh | Registered | 2024 |
| CUTWORKS 2108228 · TMA1168938 | GERBER TECHNOLOGY LLC | 9 Electronics | Registered | 2023 |
| Cotrasen 2071231 · TMA1159353 | Xiamen Feixun Garment Co.Ltd. | 25 Clothing | Registered | 2023 |
| CADRASIA 2007656 · TMA1106040 | an individual | 5 Pharmaceuticals | Registered | 2021 |
| CUTRIC 2007325 · TMA1258971 | Owner not shown | 35 Advertising36 Finance41 Education+1 | Registered | 2024 |
| CIDERCLAN 1995818 · TMA1110835 | an individual | 32 Beer33 Wine39 Transport+1 | Registered | 2021 |
| CITROSEPT 1995713 · TMA1127017 | Owner not shown | 3 Cosmetics5 Pharmaceuticals32 Beer | Registered | 2022 |
| CITYWORKS 1932896 · TMA1196222 | Azteca Systems, LLC | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2023 |
| CHÂTERAISÉ 1929705 · TMA1117905 · design | Chateraise Co., Ltd. | 30 Coffee | Registered | 2022 |
| CDRS 1922668 · TMA1151086 | an individual | 41 Education | Registered | 2022 |
| CEDRACON 1906227 · TMA1103297 | FUCHS LUBRITECH GMBH | 4 Oils | Registered | 2021 |