| IDISK 1471483 · TMA785915 | Apple Inc. | 42 Science | Registered | 2010 |
| iDiskk 2330656 | Owner not listed | 9 Electronics | Pending | 2024 |
| IDEYKA 2295714 · design | an individual | 16 Paper26 Sewing28 Toys+1 | Pending | 2023 |
| IDEGG 2100992 · TMA1198707 | Shenzhen Feikeyida Technology Co. Ltd | 25 Clothing | Registered | 2023 |
| IDK 2080618 · TMA1284113 · design | IDK Co. Ltd. | 40 Treatment42 Science | Registered | 2025 |
| IDEOS 2037581 · TMA1121713 | C. JOSEF LAMY GMBH | 16 Paper | Registered | 2022 |
| IDS 2003461 · TMA1140330 | International Decision Systems, Inc. | 9 Electronics42 Science | Registered | 2022 |
| IDEXX 1936118 · TMA1088868 · design | IDEXX LABORATORIES, INC. | 1 Chemicals5 Pharmaceuticals9 Electronics+4 | Registered | 2020 |
| IDOSE 1710660 · TMA1030151 | Glaukos Corporation | 10 Medical | Registered | 2019 |
| IDIS 1597563 · TMA879633 · design | IDIS Co., Ltd. | 7 Machines9 Electronics | Registered | 2014 |
| IDSS 1565918 · TMA847386 | VFA Canada Corporation | 36 Finance42 Science | Registered | 2013 |
| IDEAS 1544332 · TMA884030 · design | Ideas for Independent Living Inc. | 9 Electronics10 Medical12 Vehicles+4 | Registered | 2014 |
| IDS 1532016 · TMA827747 | Informa Canada Inc. | 18 Leather21 Housewares25 Clothing+1 | Registered | 2012 |
| IDEOS 1476404 · TMA833850 | HUAWEI TECHNOLOGIES CO., LTD. | 9 Electronics20 Furniture | Registered | 2012 |
| IDAS 1395931 · TMA795145 | ICOM INCORPORATED | 9 Electronics | Registered | 2011 |
| IDAS 1395924 · TMA795151 · design | ICOM INCORPORATED | 9 Electronics | Registered | 2011 |
| IDS 1376096 · TMA738197 | Owner not shown | 35 Advertising | Registered | 2009 |
| IDEXX 1358625 · TMA746302 | IDEXX LABORATORIES, INC. | 1 Chemicals5 Pharmaceuticals9 Electronics+2 | Registered | 2009 |
| IDEC 1275053 · TMA725843 · design | IDEC CORPORATION | 7 Machines9 Electronics11 Lighting | Registered | 2008 |
| IDIS 1035313 · TMA553328 | Evonik Operations GmbH | 2 Paints | Registered | 2001 |
| IDEAS 0898991 · TMA563512 | Smith International, Inc. | 37 Construction38 Telecommunications41 Education+2 | Registered | 2002 |
| IDEX 0651454 · TMA412752 | IDEX CORPORATION | 6 Metal7 Machines20 Furniture | Registered | 1993 |
| IDEXX 0630445 · TMA400378 | IDEXX LABORATORIES, INC. | 1 Chemicals9 Electronics10 Medical | Registered | 1992 |
| IDEC 0418691 · TMA233071 | IDEC CORPORATION | 9 Electronics11 Lighting | Registered | 1979 |
| IDECO 0242814 · TMA111111 | an individual | 6 Metal7 Machines28 Toys | Registered | 1958 |