| OS 2205852 · TMA1275955 | an individual | 1 Chemicals3 Cosmetics4 Oils+3 | Registered | 2024 |
| OAS 2138927 · TMA1246200 | OAS Company AB | 9 Electronics14 Jewellery18 Leather+2 | Registered | 2024 |
| OXY 2067964 · TMA1148145 | Owner not shown | 9 Electronics42 Science | Registered | 2022 |
| OX 1926275 · TMA1133616 · design | Ox Two, LLC | 17 Rubber19 Building | Registered | 2022 |
| OES 1854627 · TMA1091293 | OES Inc. | 9 Electronics42 Science | Registered | 2021 |
| OXO 1854291 · TMA1020166 | Helen of Troy Limited | 1 Chemicals3 Cosmetics7 Machines+7 | Registered | 2019 |
| OHS!! 1827406 · TMA1042753 | Post Foods, LLC | 30 Coffee | Registered | 2019 |
| OX 1788484 · TMA1027423 | 1263105 ONTARIO INC. | 3 Cosmetics5 Pharmaceuticals | Registered | 2019 |
| OIS 1629862 · TMA961465 · design | ROBERT BOSCH GMBH a German company | 3 Cosmetics7 Machines | Registered | 2017 |
| OX 1596927 · TMA871035 · design | FCP Holdings, Inc. an Indiana nonprofit corporation | 35 Advertising36 Finance41 Education | Registered | 2014 |
| OCS 1534601 · TMA846475 · design | Overseas Courier Service Co. Ltd. | 39 Transport | Registered | 2013 |
| OX 1526664 · TMA943387 | Ox Group Global Pty Ltd | 6 Metal7 Machines8 Hand+3 | Registered | 2016 |
| OIS 1512711 · TMA888285 · design | ROBERT BOSCH GMBH a German company | 3 Cosmetics7 Machines8 Hand | Registered | 2014 |
| OIS 1512062 · TMA888287 | ROBERT BOSCH GMBH a German company | 3 Cosmetics7 Machines8 Hand | Registered | 2014 |
| OX 1465444 · TMA929945 · design | Sony Interactive Entertainment Inc. | 5 Pharmaceuticals14 Jewellery16 Paper+3 | Registered | 2016 |
| OWS 1441114 · TMA788647 | Global Orthopaedic Technology Pty Limited | 9 Electronics | Registered | 2011 |
| OS 1416593 · TMA768751 · design | ORIGINAL SHOE CO. LTD., a legal entity | 9 Electronics | Registered | 2010 |
| OXO 1409326 · TMA765782 | Helen of Troy Limited | 10 Medical | Registered | 2010 |
| OXO 1402908 · TMA770195 | Helen of Troy Limited | 9 Electronics16 Paper | Registered | 2010 |
| OXO 1380637 · TMA832917 | Helen of Troy Limited | 8 Hand9 Electronics10 Medical+3 | Registered | 2012 |
| OXY 1374676 · TMA776569 | THE MENTHOLATUM COMPANY | 3 Cosmetics5 Pharmaceuticals16 Paper+1 | Registered | 2010 |
| OXO 1354543 · TMA831376 | Helen of Troy Limited | 6 Metal9 Electronics11 Lighting+5 | Registered | 2012 |
| OXO 1323596 · TMA717500 | Helen of Troy Limited | 11 Lighting | Registered | 2008 |
| OX 1300505 · TMA780496 | CHARLES SCHWAB & CO. INC. | 36 Finance | Registered | 2010 |
| OGS 1299857 · TMA698191 | an individual | 36 Finance | Registered | 2007 |