| ComputerWorx 1462460 · TMA786692 | OES Inc. | 9 Electronics11 Lighting | Registered | 2011 |
| COMPUTERTV 1429635 · TMA788387 · design | PCM Sales, Inc. | 9 Electronics35 Advertising38 Telecommunications+1 | Registered | 2011 |
| COMPUTERWORLD 1576615 · TMA851315 | INTERNATIONAL DATA GROUP, INC. | 42 Science | Registered | 2013 |
| COMPUTERWORLD 0424946 · TMA235747 | INTERNATIONAL DATA GROUP, INC. (ALSO TRADING AS INTERNATIONAL DATA GROUP AND AS IDG), A MASSACHUSETTS CORPORATION | 16 Paper | Registered | 1979 |
| COMPUTERWORLD 2155126 | INTERNATIONAL DATA GROUP, INC. | 35 Advertising38 Telecommunications42 Science | Pending | 2021 |
| COMPUTRON 1980661 · TMA1094757 | an individual | 14 Jewellery | Registered | 2021 |
| COMPUTEAORTA 1800323 · TMA1055238 | Codeplay Software Limited | 9 Electronics28 Toys42 Science | Registered | 2019 |
| COMPUTHOTICS 0781574 · TMA479335 | Footmaxx of Virginia, Inc. | 9 Electronics10 Medical | Registered | 1997 |
| COMPUTOT 0706535 · TMA450441 | Owner not shown | 41 Education | Registered | 1995 |
| COMPUTERLAND 0414412 · TMA237300 | Softchoice Corporation | 9 Electronics16 Paper35 Advertising+2 | Registered | 1979 |
| COMPUTOOLS 2259760 · design | an individual | 9 Electronics42 Science | Pending | 2022 |
| COMPETITOR 1769780 · TMA963705 | Competitor Swim Products, Inc. | 28 Toys | Registered | 2017 |
| COMPUDENT 1618424 · TMA892810 | Compudent Systems Inc. | 9 Electronics10 Medical37 Construction+2 | Registered | 2014 |
| COMPUTRACE 1615936 · TMA876512 | ABSOLUTE SOFTWARE CORPORATION | 9 Electronics16 Paper45 Legal | Registered | 2014 |
| COMPETITOR 1588687 · TMA921331 | World Triathlon Corporation | 9 Electronics41 Education | Registered | 2015 |
| COMPETITOR 1564248 · TMA895328 | Medical Depot, Inc. dba Drive Medical Design & Manufacturing | 20 Furniture | Registered | 2015 |
| COMPUTECH 1416831 · TMA775002 · design | an individual | 35 Advertising37 Construction | Registered | 2010 |
| COMPETITOR 0819908 · TMA480583 | The Canada Life Assurance Company | 36 Finance | Registered | 1997 |
| COMPUTRITION 0803882 · TMA476853 | COMPUTRITION, INC. | 9 Electronics | Registered | 1997 |
| COMPUTRONIX 0799956 · TMA467501 | COMPUTRONIX (CANADA) LTD. | 42 Science | Registered | 1996 |
| COMPUTICKET 0789022 · TMA488601 | COMPUTICKET (PROPRIETARY) LIMITED | 16 Paper39 Transport | Registered | 1998 |
| COMPUTICKET 0789021 · TMA488454 · design | COMPUTICKET (PROPRIETARY) LIMITED | 16 Paper39 Transport | Registered | 1998 |
| COMPUTRACE 0760917 · TMA479016 | ABSOLUTE SOFTWARE CORPORATION | 9 Electronics42 Science | Registered | 1997 |
| COMPUTEACH 0724278 · TMA436242 | LAUNCHLIFE INTERNATIONAL INC. | 41 Education42 Science43 Restaurants | Registered | 1994 |
| COMPUTAR 0368152 · TMA201184 | CBC America LLC | 9 Electronics | Registered | 1974 |