| RETYCHE 1986528 · TMA1243682 | THE ELIASISTERS INC./LES SOEURS ELIAS INC. | 35 Advertising | Registered | 2024 |
| RTSAH 2194359 · TMA1242561 | an individual | 9 Electronics14 Jewellery18 Leather+5 | Registered | 2024 |
| RITECH 1916944 · TMA1106177 · design | Rite Brands Corp. | 9 Electronics10 Medical21 Housewares+3 | Registered | 2021 |
| RtTech 1617889 · TMA879694 | RtTech Software Inc. | 42 Science | Registered | 2014 |
| RETEC 1606981 · TMA888671 | SpilKleen, Division of AgraMax Inc. | 17 Rubber35 Advertising | Registered | 2014 |
| ROTECH 1296121 · TMA756600 | Sawgrass Technologies, Inc. | 2 Paints9 Electronics37 Construction+1 | Registered | 2010 |
| RETEC 0787834 · TMA468625 · design | Rétec international inc. | 2 Paints3 Cosmetics7 Machines+2 | Registered | 1997 |
| Retzc 2361447 | Owner not listed | 5 Pharmaceuticals | Pending | 2024 |
| RETIC 2238486 | an individual | 1 Chemicals | Pending | 2022 |
| RETOUCHE 1533262 · TMA842199 | Enotecca Wineries & Resorts Inc. | 33 Wine | Registered | 2013 |
| RHEOTECH 1151153 · TMA695558 | Owner not shown | 1 Chemicals | Registered | 2007 |
| ROETYCE 2211985 · TMA1243044 · design | Guangzhou Zitai Network Technology Co., Ltd. | 16 Paper | Registered | 2024 |
| RETISSA 2002378 · TMA1116912 | QD LASER, INC. | 9 Electronics10 Medical | Registered | 2022 |
| REDESCA 1997753 · TMA1257393 | Valeo Pharma Inc. | 5 Pharmaceuticals | Registered | 2024 |
| RAWTECH 1776460 · TMA989713 · design | Nutraceutech Inc. | 11 Lighting | Registered | 2018 |
| ROWTECH 1719285 · TMA921851 | Loc Performance Products, LLC | 12 Vehicles | Registered | 2015 |
| ROOTECH 1012163 · TMA541438 | Technaflora Plant Products Ltd. | 11 Lighting | Registered | 2001 |
| ROTESCO 0486630 · TMA275862 | ROTESCO LTD. | 6 Metal42 Science | Registered | 1983 |
| REDESCO 2112728 · design | Titan Clean Energy Projects Corporation | 17 Rubber | Pending | 2021 |
| RADIUS 360° 2264645 · TMA1283414 | Full Circle International, Inc. | 7 Machines8 Hand | Registered | 2025 |
| ROADX 2236536 · TMA1254182 · design | SAILUN GROUP CO. LTD. | 12 Vehicles | Registered | 2024 |
| ROOTS 2231736 · TMA1248979 | Roots Corporation | 9 Electronics35 Advertising41 Education+1 | Registered | 2024 |
| ROUTICA 2226218 · TMA1250236 | Ositech Communications Inc. | 9 Electronics | Registered | 2024 |
| Redkey 2223132 · TMA1248795 | an individual | 7 Machines | Registered | 2024 |
| RTEX 2212297 · TMA1243093 | DAVEY TEXTILE SOLUTIONS INC. | 24 Textiles | Registered | 2024 |