| ORIZON 2114585 · TMA1205018 · design | an individual | 5 Pharmaceuticals9 Electronics10 Medical | Registered | 2023 |
| ORIZON 2101581 · TMA1204975 | an individual | 5 Pharmaceuticals9 Electronics10 Medical | Registered | 2023 |
| ORIZON 2088415 · TMA1186050 | an individual | 25 Clothing | Registered | 2023 |
| ORIZON 2019941 · TMA1283816 | Saudi Arabian Oil Company | 1 Chemicals4 Oils42 Science | Registered | 2025 |
| ORIZON 1941882 · TMA1172943 | an individual | 35 Advertising42 Science | Registered | 2023 |
| ORIKON 1520014 · TMA823175 | MÉDICAL TRONIK MTL LTÉE | 10 Medical | Registered | 2012 |
| ORISING 2314289 · design | an individual | 3 Cosmetics | Pending | 2024 |
| ORÍSUN 2126036 | Mama's Natural Foods Inc. | 5 Pharmaceuticals | Pending | 2021 |
| ORIJOYNA 2220851 · TMA1248536 | Shenzhen Xinge Trading Co. Ltd | 21 Housewares | Registered | 2024 |
| ORIGIN 2249361 · TMA1268668 | Owner not listed | 28 Toys | Registered | 2024 |
| ORIGINS 2242991 · TMA1258449 | ORIGINS NATURAL RESOURCES INC. | 9 Electronics | Registered | 2024 |
| ORIGIN 2116514 · TMA1161595 | Stratasys, Inc. | 7 Machines | Registered | 2023 |
| Origyna 2106982 · TMA1177666 | Viridian Food Ltd. | 1 Chemicals29 Meat | Registered | 2023 |
| ORIGEN 2081362 · TMA1252085 | FIORE FOODS 2426657 ONTARIO LTD | 29 Meat30 Coffee | Registered | 2024 |
| ORESUND 2023881 · TMA1158858 | KOHLER CO. | 11 Lighting | Registered | 2023 |
| ORIGIN 2018442 · TMA1142639 | GM CRUISE HOLDINGS LLC | 12 Vehicles39 Transport | Registered | 2022 |
| ORIGIN 1999400 · TMA1146501 | an individual | 10 Medical42 Science | Registered | 2022 |
| ORIGN 1895762 · TMA1070373 | Keilhauer Ltd. | 20 Furniture | Registered | 2020 |
| ORIGINS 1875632 · TMA1070633 | Croll & Co. Ltd. | 45 Legal | Registered | 2020 |
| ORIJEN 1859092 · TMA1096812 · design | Owner not shown | 42 Science | Registered | 2021 |
| ORIGINS 1856608 · TMA1041840 | Anchor Wall Systems Limited, (a Delaware Corporation) | 19 Building | Registered | 2019 |
| ORIGIN 1852351 · TMA1143177 · design | Origin Materials Operating, Inc. | 1 Chemicals40 Treatment42 Science | Registered | 2022 |
| ORIGIN 1852350 · TMA1143178 | Origin Materials Operating, Inc. | 1 Chemicals40 Treatment42 Science | Registered | 2022 |
| ORIGIN 1822150 · TMA1073962 | MARSHALL AMPLIFICATION PLC | 9 Electronics15 Musical | Registered | 2020 |
| ORAGON 1801142 · TMA1045638 | mixi, Inc. | 9 Electronics28 Toys41 Education | Registered | 2019 |