| ROWTECH 1719285 · TMA921851 | Loc Performance Products, LLC | 12 Vehicles | Registered | 2015 |
| ROTECH 1296121 · TMA756600 | Sawgrass Technologies, Inc. | 2 Paints9 Electronics37 Construction+1 | Registered | 2010 |
| RHEOTECH 1151153 · TMA695558 | Owner not shown | 1 Chemicals | Registered | 2007 |
| RITECH 1916944 · TMA1106177 · design | Rite Brands Corp. | 9 Electronics10 Medical21 Housewares+3 | Registered | 2021 |
| RAWTECH 1776460 · TMA989713 · design | Nutraceutech Inc. | 11 Lighting | Registered | 2018 |
| ROTECC 1665223 · TMA963800 | Zoetis Services LLC | 44 Medical | Registered | 2017 |
| RtTech 1617889 · TMA879694 | RtTech Software Inc. | 42 Science | Registered | 2014 |
| RYOTEC 2349076 | Owner not listed | 6 Metal7 Machines | Pending | 2024 |
| ROOTS 2231736 · TMA1248979 | Roots Corporation | 9 Electronics35 Advertising41 Education+1 | Registered | 2024 |
| ROUTICA 2226218 · TMA1250236 | Ositech Communications Inc. | 9 Electronics | Registered | 2024 |
| ROETYCE 2211985 · TMA1243044 · design | Guangzhou Zitai Network Technology Co., Ltd. | 16 Paper | Registered | 2024 |
| RITEC 2052026 · TMA1152933 · design | RITEC Rohr-Inspektionstechnik GmbH | 9 Electronics41 Education42 Science | Registered | 2022 |
| ROOTS73 1974611 · TMA1199625 · design | Roots Corporation | 25 Clothing | Registered | 2023 |
| ROOTS 1912140 · TMA1023037 | Roots Corporation | 9 Electronics16 Paper36 Finance | Registered | 2019 |
| ROOTS 1898440 · TMA1081047 · design | Roots Corporation | 9 Electronics14 Jewellery18 Leather+1 | Registered | 2020 |
| REATEC 1855708 · TMA1058684 | Sangetsu Corporation | 17 Rubber19 Building27 Carpets | Registered | 2019 |
| ROOTS 1737738 · TMA1026624 | Roots Corporation | 6 Metal9 Electronics12 Vehicles+9 | Registered | 2019 |
| ROOTS 1734432 · TMA976355 · design | Roots Blowers LLC | 7 Machines | Registered | 2017 |
| ROOTS 1734431 · TMA976353 | Roots Blowers LLC | 7 Machines | Registered | 2017 |
| RETEC 1606981 · TMA888671 | SpilKleen, Division of AgraMax Inc. | 17 Rubber35 Advertising | Registered | 2014 |
| RTOUCH 1550303 · TMA844638 · design | BEIJING IRTOUCHSYSTEMS CO. LTD. | 9 Electronics | Registered | 2013 |
| ROOTS73 1517125 · TMA964374 · design | Roots Corporation | 25 Clothing | Registered | 2017 |
| ROOTS 1487327 · TMA797477 · design | Roots Corporation | 14 Jewellery | Registered | 2011 |
| RODECS 1480206 · TMA882891 | an individual | 35 Advertising40 Treatment42 Science | Registered | 2014 |
| ROTHCO 1386166 · TMA758828 | Morris Rothenberg & Son, Inc. | 25 Clothing35 Advertising | Registered | 2010 |