| OLPERS 2249612 · TMA1269973 · design | Owner not listed | 29 Meat30 Coffee32 Beer | Registered | 2024 |
| OLIVER 1539188 · TMA829869 · design | OLIVER-SPORT GmbH | 28 Toys | Registered | 2012 |
| oliberté 1467741 · TMA816353 | OLIBERTE LIMITED | 16 Paper18 Leather25 Clothing | Registered | 2012 |
| OLIVER 1376406 · TMA753011 | AGCO CORPORATION, (A DELAWARE CORPORATION) | 6 Metal25 Clothing | Registered | 2009 |
| OLIVER 1139888 · TMA612208 · design | CHIU TING MACHINERY CO. LTD. | 7 Machines | Registered | 2004 |
| OLIVER 0990236 · NFLD236 | THE OLIVER TYPEWRITER MANUFACTURING COMPANY, LIMITED | 9 Electronics | Registered | 1907 |
| OLIVER 0522010 · TMA307409 · design | OLIVER RUBBER COMPANY | 37 Construction | Registered | 1985 |
| OLIVER 0340238 · TMA183368 | AGCO CORPORATION, (A DELAWARE CORPORATION) | 4 Oils7 Machines22 Ropes | Registered | 1972 |
| OLIVER 0303679 · TMA155143 | OLIVER RUBBER COMPANY | 1 Chemicals7 Machines12 Vehicles+1 | Registered | 1968 |
| OLIVER 2118129 | Oliver Packaging and Equipment Company | 16 Paper17 Rubber20 Furniture+1 | Pending | 2021 |
| OLIVIER 2148097 · TMA1193894 | OLIVIER | 7 Machines | Registered | 2023 |
| OLPRUVA 2056478 · TMA1130010 | Acer Therapeutics Inc. | 5 Pharmaceuticals | Registered | 2022 |
| Olivora 1983453 · TMA1125707 | Hoo Smart Consulting Inc. | 29 Meat30 Coffee33 Wine | Registered | 2022 |
| OLIVIERI 1688092 · TMA1037956 · design | RIVIANA FOODS CANADA CORPORATION | 29 Meat | Registered | 2019 |
| OILBERTA 1672971 · TMA907360 | Brewster's Brew Pub & Brasserie (Alta) Inc. | 32 Beer | Registered | 2015 |
| OLIVARIUM 1593364 · TMA890155 | Owner not shown | 3 Cosmetics5 Pharmaceuticals30 Coffee | Registered | 2014 |
| OLEOFIRM 1542686 · TMA901575 | Apollo Healthcare Corp. | 3 Cosmetics | Registered | 2015 |
| OLIVIERI 1521026 · TMA845767 · design | RIVIANA FOODS CANADA CORPORATION | 30 Coffee | Registered | 2013 |
| OLIVARES 1371225 · TMA730586 | an individual | 33 Wine | Registered | 2008 |
| OLIVIERI 1318320 · TMA695595 · design | RIVIANA FOODS CANADA CORPORATION | 30 Coffee | Registered | 2007 |
| OLIVIERI 1195567 · TMA655518 · design | RIVIANA FOODS CANADA CORPORATION | 29 Meat30 Coffee | Registered | 2005 |
| OLIVARI 1008905 · TMA547915 · design | an individual | 6 Metal19 Building20 Furniture+2 | Registered | 2001 |
| OLIVIERI 0626094 · TMA375097 | RIVIANA FOODS CANADA CORPORATION | 29 Meat30 Coffee | Registered | 1990 |
| OLIVIERI 1882 2285018 · design | Owner not shown | 30 Coffee43 Restaurants | Pending | 2023 |
| OLIVIER 2279899 | an individual | 7 Machines19 Building37 Construction+1 | Pending | 2023 |