| ORGASM 1760648 · TMA955732 | Shiseido Americas Corporation | 3 Cosmetics | Registered | 2016 |
| ORGASM 1553745 · TMA838612 | Shiseido Americas Corporation | 3 Cosmetics | Registered | 2012 |
| ORGASM 1369737 · TMA778460 · design | Fiesta Catering International Ltd. | 9 Electronics | Registered | 2010 |
| ORGASM 1255824 · TMA712226 · design | Fiesta Catering International Ltd. | 25 Clothing35 Advertising41 Education | Registered | 2008 |
| ORGASOL 1263224 · TMA678567 | an individual | 1 Chemicals2 Paints | Registered | 2006 |
| ORGECO 2032735 · TMA1162056 · design | Changsha Hawa E-commerce Co. Ltd. | 21 Housewares | Registered | 2023 |
| ORCASHORE 1997956 | Orcashore Inc. | 9 Electronics42 Science | Pending | 2019 |
| origiwish 2205470 · TMA1192236 | an individual | 18 Leather | Registered | 2023 |
| ORKES 2195358 · TMA1220745 | Orkes Inc. | 9 Electronics42 Science | Registered | 2024 |
| oRECIST 2183709 · TMA1229631 | Oncoradiomics | 9 Electronics42 Science44 Medical | Registered | 2024 |
| ORZAX 2120590 · TMA1219085 · design | Owner not shown | 5 Pharmaceuticals | Registered | 2024 |
| origiwish 2105648 · TMA1191687 | an individual | 25 Clothing | Registered | 2023 |
| ORCHESTRY 2060221 · TMA1192491 | Orchestry Software Inc. | 42 Science | Registered | 2023 |
| OrgaWise 1981077 · TMA1132003 | Changsha Douyou E-Commerce Co. Ltd. | 18 Leather | Registered | 2022 |
| ORCQESRO 1931685 · TMA1114389 | AKEBIA THERAPEUTICS, INC. | 5 Pharmaceuticals | Registered | 2021 |
| ORIGIS 1877349 · TMA1067946 | Origis USA LLC | 35 Advertising36 Finance37 Construction+2 | Registered | 2020 |
| ORSUS 1868416 · TMA1062427 · design | ISSQUARED, Inc. | 9 Electronics | Registered | 2019 |
| ORSUS 1868415 · TMA1062405 | ISSQUARED, Inc. | 9 Electronics | Registered | 2019 |
| ORCHAS 1699506 · TMA983338 · design | TGI Technology Pte Ltd | 9 Electronics | Registered | 2017 |
| ORCHESTRA 1668903 · TMA991154 | Owner not shown | 10 Medical | Registered | 2018 |
| ORXESTRA 1646183 · TMA905614 | Transearch International Partners Limited | 16 Paper41 Education | Registered | 2015 |
| ORCKESTRA 1641744 · TMA918615 · design | Technologies Orckestra Inc./Orckestra Technologies Inc. | 9 Electronics41 Education42 Science | Registered | 2015 |
| ORCHESTRA 1634551 · TMA945143 | NEWORCH | 3 Cosmetics5 Pharmaceuticals25 Clothing+2 | Registered | 2016 |
| ORSIS 1609131 · TMA877323 · design | Limited Liability Company PROMTECHNOLOGIA | 13 Firearms | Registered | 2014 |
| ORGHISTORY 1365933 · TMA781574 | Aquire Solutions, Inc. | 9 Electronics | Registered | 2010 |