| CONTEXT 1282902 · TMA676606 | Context Development Inc. | 36 Finance37 Construction42 Science | Registered | 2006 |
| CONTEXT 1282901 · TMA680747 · design | Context Development Inc. | 36 Finance37 Construction42 Science | Registered | 2007 |
| CONTEC 1948626 · TMA1148335 · design | CONTEC MEDICAL SYSTEMS CO. LTD. | 10 Medical | Registered | 2022 |
| CONTECH 1806549 · TMA1012240 | an individual | 37 Construction | Registered | 2019 |
| CONTEGA 1656006 · TMA912360 | Biologische Insel Lothar Moll GmbH & Co. KG | 1 Chemicals17 Rubber | Registered | 2015 |
| CENTEX 1472112 · TMA794011 · design | an individual | 35 Advertising37 Construction | Registered | 2011 |
| CINTEX 1394776 · TMA753561 · design | Illinois Tool Works Inc. (Delaware corporation) | 9 Electronics | Registered | 2009 |
| CONTEC 1366039 · TMA745544 | NUTRIEN (CANADA) HOLDINGS ULC | 1 Chemicals | Registered | 2009 |
| CONTEC 1343357 · TMA747099 | NRW Anlagentechnik GmbH | 7 Machines11 Lighting | Registered | 2009 |
| CONTAX 1339162 · TMA719740 | Mühlbauer Technology GmbH | 5 Pharmaceuticals | Registered | 2008 |
| CONTEC 0772189 · TMA456842 · design | CONTEC CO. LTD. | 5 Pharmaceuticals9 Electronics | Registered | 1996 |
| CONTAX 0380154 · TMA215387 | an individual | 9 Electronics | Registered | 1976 |
| CONTESSA 2189867 · TMA1233644 | THOR TECH, INC. | 12 Vehicles | Registered | 2024 |
| CONTESSA 1398602 · TMA757059 | SCOTT SPORTS SA | 12 Vehicles21 Housewares | Registered | 2010 |
| CONTESSA 1228523 · TMA696617 | RADICO KHAITAN LTD. | 33 Wine | Registered | 2007 |
| CONTESSA 1223119 · TMA667972 · design | Contessa Premium Foods, Inc. | 29 Meat | Registered | 2006 |
| CONTESSA 1214422 · TMA636280 | AURUM GROUP LTD. | 10 Medical | Registered | 2005 |
| CONTESSA 1054501 · TMA558031 | GEORGE COUREY INC. | 11 Lighting21 Housewares24 Textiles+1 | Registered | 2002 |
| CONTEGRA 1045981 · TMA599601 | MEDTRONIC, INC. a Minnesota corporation | 7 Machines | Registered | 2004 |
| COUNTESS 0768006 · TMA462464 | Hostess Brands, Inc. | 30 Coffee | Registered | 1996 |
| CONTESSA 0656477 · TMA387111 | Contessa Premium Foods, Inc. | 29 Meat | Registered | 1991 |
| CONTESSA 0562860 · TMA331486 | The Procter & Gamble Company (an Ohio Corporation) | 16 Paper | Registered | 1987 |
| CONTESSA 0323764 · TMA169552 | JTI-Macdonald TM Corp. | 34 Tobacco | Registered | 1970 |
| CONTESSA 0308536 · TMA159478 | SSH Bedding Canada Co. | 20 Furniture | Registered | 1968 |
| "COUNTESS" 0217338 · UCA44527 | N. JEFFERSON LTD. | 26 Sewing | Registered | 1952 |