| Cloudneo 2156097 · TMA1272461 | On Clouds GmbH | 25 Clothing28 Toys42 Science | Registered | 2024 |
| CLOUDNS 2042645 · TMA1275298 · design | Cloud DNS Ltd. | 9 Electronics38 Telecommunications42 Science+1 | Registered | 2024 |
| CLOUDNINE 1846459 · TMA1031287 | EnvisionWare, Inc. | 42 Science | Registered | 2019 |
| CloudMi 2184055 · TMA1230513 | Shenzhen Yunzhimi Technology Co. Ltd. | 11 Lighting | Registered | 2024 |
| CLOUDTEN 1834124 · TMA1069806 | INSPIRED LLC | 24 Textiles | Registered | 2020 |
| CLOUDANT 1769330 · TMA1053897 | INTERNATIONAL BUSINESS MACHINES CORPORATION | 9 Electronics38 Telecommunications42 Science | Registered | 2019 |
| CLOUDME 1538467 · TMA961709 | an individual | 7 Machines9 Electronics42 Science | Registered | 2017 |
| CLOUDHEIM 2365275 | Noodle Cat Games Company | 9 Electronics41 Education | Pending | 2024 |
| CLOUDMEB 2007994 | MEB Inc. | 35 Advertising36 Finance38 Telecommunications+2 | Pending | 2020 |
| CloudMD 1981527 | Cloud Practice Inc. | 38 Telecommunications42 Science44 Medical | Pending | 2019 |
| Cloudwander 2186450 · TMA1272592 | On Clouds GmbH | 25 Clothing28 Toys42 Science | Registered | 2024 |
| CLOUDENGAGE 1958787 · TMA1182294 | CloudEngage, Inc. | 42 Science | Registered | 2023 |
| CHULTON 2268640 · TMA1258518 | KOHLER CO. | 20 Furniture | Registered | 2024 |
| CLATINA 2113131 · TMA1186344 · design | UE Furniture Co. Ltd. | 20 Furniture | Registered | 2023 |
| CALITUM 2073317 · TMA1252079 | WIKA Alexander Wiegand SE & Co. KG | 9 Electronics42 Science | Registered | 2024 |
| COALITION 2068192 · TMA1168380 | COALITION, INC. | 36 Finance42 Science | Registered | 2023 |
| CALEDONIA 2029629 · TMA1187045 | Cervélo USA Inc. | 12 Vehicles | Registered | 2023 |
| coilDNA 2023838 · TMA1134915 | an individual | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2022 |
| CLAYTON 2004357 · TMA1166399 · design | an individual | 25 Clothing | Registered | 2023 |
| COOLTONE 1999507 · TMA1103356 | Zeltiq Aesthetics, Inc. | 10 Medical | Registered | 2021 |
| CALADAN 1987011 · TMA1113086 | Jackson Family Farms, LLC | 33 Wine | Registered | 2021 |
| CELTHEN 1977403 · TMA1130982 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2022 |
| CALEDONIA 1977240 · TMA1153722 | POLYCOR INC. | 19 Building | Registered | 2022 |
| CALITIME 1972925 · TMA1198409 · design | an individual | 24 Textiles | Registered | 2023 |
| CHILTINA 1963839 · TMA1136863 | Shenzhen Mofeini Trading Co. Ltd. | 9 Electronics21 Housewares28 Toys | Registered | 2022 |