| OMG 2257529 · TMA1267506 · design | OMG OASIS MEDITERRANEAN GRILL LTD. | 35 Advertising43 Restaurants | Registered | 2024 |
| OMG& 2039961 · TMA1121736 | an individual | 30 Coffee32 Beer33 Wine | Registered | 2022 |
| OMG& 2039959 · TMA1127458 · design | an individual | 30 Coffee32 Beer33 Wine | Registered | 2022 |
| OMG!! 1967155 · TMA1077809 · design | OMGs Candy Inc. | 30 Coffee | Registered | 2020 |
| OMG!! 1967040 · TMA1071657 · design | OMGs Candy Inc. | 30 Coffee | Registered | 2020 |
| OMS 1951348 · TMA1194150 · design | DCB Holding GmBH | 8 Hand9 Electronics11 Lighting+2 | Registered | 2023 |
| OMG!! 1927847 · TMA1071250 · design | OMGs Candy Inc. | 30 Coffee | Registered | 2020 |
| OnQ 1901161 · TMA1115236 | QUEEN'S UNIVERSITY AT KINGSTON | 9 Electronics38 Telecommunications41 Education+1 | Registered | 2021 |
| OnQ 1835708 · TMA1128710 | JVCKENWOOD Canada Inc. | 9 Electronics38 Telecommunications42 Science | Registered | 2022 |
| OMx 1753205 · TMA1084627 | OMx Personal Health Analytics Inc. | 9 Electronics35 Advertising38 Telecommunications+3 | Registered | 2020 |
| OMG 1691324 · TMA923004 | Ontario Marihuana Growers Inc. | 5 Pharmaceuticals35 Advertising44 Medical | Registered | 2015 |
| OMG!!!!!! 1533127 · TMA853771 | Vision Wine & Spirits, LLC | 33 Wine | Registered | 2013 |
| OMG 1407602 · TMA757136 | YM Inc. (Sales) | 9 Electronics18 Leather25 Clothing | Registered | 2010 |
| OMX 1389861 · TMA828724 | CommScope Technologies LLC | 9 Electronics | Registered | 2012 |
| OMC 0886427 · TMA541297 · design | ONWARD MULTI-CORP. INC. | 16 Paper | Registered | 2001 |
| OMS 0885618 · TMA549393 · design | DCB Holding GmBH | 1 Chemicals6 Metal7 Machines+15 | Registered | 2001 |
| OMS 0885617 · TMA549394 | DCB Holding GmBH | 1 Chemicals6 Metal7 Machines+15 | Registered | 2001 |
| OMS 0760594 · TMA446058 | 177107 CANADA INC. | 1 Chemicals3 Cosmetics | Registered | 1995 |
| OMC 0291959 · TMA145172 | Bombardier Recreational Products Inc. | 2 Paints3 Cosmetics4 Oils+5 | Registered | 1966 |
| OMS 2352127 | Okuma America Corporation | 7 Machines | Pending | 2024 |
| OMS 2349995 | OPTIV PARENT INC. (Delaware) | 35 Advertising42 Science | Pending | 2024 |
| OMS 2263759 · design | Owner not listed | 25 Clothing | Pending | 2023 |
| OMG 2248122 | OMG OASIS MEDITERRANEAN GRILL LTD. | 35 Advertising43 Restaurants | Pending | 2023 |
| OMG 2013906 | Film Fest Lover Inc., a legal entity | 9 Electronics16 Paper25 Clothing+3 | Pending | 2020 |
| OMC 0974510 | Owner not shown | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1997 |