| GUARDACART 2360995 · design | Rivercity Innovations Ltd. | 9 Electronics42 Science | Pending | 2024 |
| GUARDACART 2360962 | Rivercity Innovations Ltd. | 9 Electronics42 Science | Pending | 2024 |
| GUARDSMAN 1753220 · TMA991888 · design | Univar Solutions Canada Ltd. | 1 Chemicals5 Pharmaceuticals | Registered | 2018 |
| GUARDSMARK 1324652 · TMA769067 | Guardsmark, LLC | 35 Advertising37 Construction39 Transport+3 | Registered | 2010 |
| GUARDSMARK 1286531 · TMA694981 | Guardsmark, LLC | 45 Legal | Registered | 2007 |
| GUARDSMAN 0740677 · TMA467861 | LINVATEC CORPORATION, A FLORIDA CORPORATION | 10 Medical | Registered | 1996 |
| GUARDZYME 0739188 · TMA464179 | Owner not shown | 1 Chemicals4 Oils7 Machines+2 | Registered | 1996 |
| GUARDSMAN 0736768 · TMA432086 | Univar Solutions Canada Ltd. | 1 Chemicals5 Pharmaceuticals | Registered | 1994 |
| GUARDSMAN 0705221 · TMA416080 · design | Univar Solutions Canada Ltd. | 1 Chemicals5 Pharmaceuticals | Registered | 1993 |
| GUARDSMAN 0241275 · TMA109125 | Transform SR Brands LLC | 7 Machines12 Vehicles | Registered | 1958 |
| "GUARDSMAN" 0193722 · UCA26362 | SWIMC LLC | 2 Paints3 Cosmetics16 Paper | Registered | 1946 |
| GUARDTEK 2232601 | Guardteck Security Corp. | 7 Machines9 Electronics35 Advertising+3 | Pending | 2023 |
| GUARDSMAN 2117657 | Guardsman US LLC | 1 Chemicals2 Paints3 Cosmetics+5 | Pending | 2021 |
| GUARDECK 1972794 · design | Gestion IDAAM inc. | 6 Metal42 Science | Pending | 2019 |
| GUARDECK 1972793 | Gestion IDAAM inc. | 6 Metal42 Science | Pending | 2019 |
| GUARDSERVER 1070182 · TMA646137 | BI INCORPORATED | 9 Electronics | Registered | 2005 |
| GRTXIN 2244997 · TMA1264349 | Shenzhen Sanshen Technology Co. Ltd | 25 Clothing | Registered | 2024 |
| GREATEC 2197215 · TMA1246412 | BRIDGESTONE CORPORATION | 12 Vehicles | Registered | 2024 |
| GEORATES 2194056 · TMA1268437 · design | AIRBNB, INC. | 35 Advertising | Registered | 2024 |
| GRIDKIDS 2184975 · TMA1253719 | New Configurations IP Limited | 28 Toys | Registered | 2024 |
| GIRIAITUS 2170858 · TMA1221478 · design | Shenzhen Xinyatu Technology Co. Ltd. | 8 Hand | Registered | 2024 |
| GRAITEC 2168129 · TMA1272517 | an individual | 9 Electronics42 Science | Registered | 2024 |
| GROWTHSTUDIO 2145945 · TMA1205145 | Crowell & Moring LLP | 45 Legal | Registered | 2023 |
| GRIDCONNEX 2138138 · TMA1180814 | Electro-Mechanical, LLC | 9 Electronics | Registered | 2023 |
| GOURDGEOUS 2137462 · TMA1172904 | PetSmart Home Office LLC | 31 Fresh | Registered | 2023 |