| RESQTECH 1747893 · TMA977166 | RESQTECH SYSTEMS INC. | 35 Advertising | Registered | 2017 |
| RESQTECH 0667752 · TMA413298 | RESQTECH SYSTEMS INC. | 1 Chemicals6 Metal7 Machines+9 | Registered | 1993 |
| RESTECK 2054514 | Resteck LLC | 10 Medical | Pending | 2020 |
| RESITECT 1477955 · TMA808329 | Refractory Intellectual Property GmbH & Co. Kg | 19 Building | Registered | 2011 |
| RSHTECH 2331819 | Shenzhen Rongshenghui Technology Co. Ltd. | 9 Electronics | Pending | 2024 |
| RESTACK 2127483 | RESTACK ADVISORS INC. | 9 Electronics36 Finance | Pending | 2021 |
| RESTECLIN 0275483 · TMA136973 | Bristol-Myers Squibb Canada Co./La Société Bristol-Myers Squibb Canada | 5 Pharmaceuticals | Registered | 1964 |
| RockTech 2218470 | Rock Tech Consulting GmbH | 1 Chemicals6 Metal9 Electronics+2 | Pending | 2022 |
| ROCKTECH 2218469 · design | Rock Tech Consulting GmbH | 1 Chemicals6 Metal9 Electronics+2 | Pending | 2022 |
| RUSTICA 2245570 · TMA1265721 | MASCO CANADA LIMITED | 6 Metal20 Furniture21 Housewares | Registered | 2024 |
| RUSTICA 2190440 · TMA1194073 | MASCO CANADA LIMITED | 11 Lighting | Registered | 2023 |
| RestQ 2059962 · TMA1275552 | Martin & Pleasance North America Inc. | 5 Pharmaceuticals | Registered | 2024 |
| RESTGO 1869731 · TMA1068364 | an individual | 10 Medical35 Advertising | Registered | 2020 |
| RECOTEC 1859445 · TMA1017180 | MASCHINENFABRIK REINHAUSEN GMBH | 17 Rubber | Registered | 2019 |
| RUSTICO 1779241 · TMA1058159 | Raspberry Point Oyster Co. Inc. | 31 Fresh | Registered | 2019 |
| RESDAC 1618874 · TMA899496 · design | Owner not shown | 9 Electronics16 Paper35 Advertising+1 | Registered | 2015 |
| Rustico 1534697 · TMA862253 | Mucci International Marketing Inc. | 31 Fresh | Registered | 2013 |
| ROXTEC 1502427 · TMA843519 · design | an individual | 16 Paper37 Construction41 Education+1 | Registered | 2013 |
| RUSTEX 1483706 · TMA793771 | CLOVERDALE PAINT INC. | 2 Paints | Registered | 2011 |
| RUSTICA 1333984 · TMA714708 | Les Aliments Rustica Inc. / Rustica Foods Inc. | 30 Coffee | Registered | 2008 |
| RESTAUX 1296259 · TMA712948 | an individual | 29 Meat30 Coffee | Registered | 2008 |
| RUSTICA 1283857 · TMA703874 | STONE CREEK RESORTS INC. | 8 Hand9 Electronics14 Jewellery+7 | Registered | 2007 |
| RUSTICO 1259326 · TMA667924 | an individual | 33 Wine | Registered | 2006 |
| RUSTIC 1148759 · TMA702343 | Mortarless Technologies LLC (a Minnesota limited liability company) | 19 Building | Registered | 2007 |
| ROXTEC 1131659 · TMA602571 · design | an individual | 17 Rubber | Registered | 2004 |