| WESTERLY 2055958 · TMA1182441 | RESIDENCES OF WESTERLY INC. | 36 Finance37 Construction42 Science | Registered | 2023 |
| WESTERLY 1985010 · TMA1135492 | AS America, Inc. | 11 Lighting | Registered | 2022 |
| WISTERIA 1780912 · TMA981175 | DAVID YURMAN IP LLC | 14 Jewellery35 Advertising | Registered | 2017 |
| WISTERIA 1598097 · TMA868462 | Les Produits Neptune Inc. | 11 Lighting | Registered | 2014 |
| WESTERN 1380293 · TMA792483 | DOUGLAS DYNAMICS, LLC (a Delaware Limited Liability Company) | 7 Machines8 Hand | Registered | 2011 |
| WYSTERIA 1155344 · TMA602619 | HASBRO, INC. | 28 Toys | Registered | 2004 |
| WESTERN 0505942 · TMA292655 · design | WESTERN PIZZA & BAR-B-Q CHICKEN (1979) LTD. | 29 Meat30 Coffee | Registered | 1984 |
| WESTERN 0304217 · TMA154999 · design | OLIN CORPORATION | 13 Firearms21 Housewares28 Toys | Registered | 1968 |
| WESTERN 0201521 · UCA32966 | OLIN CORPORATION | 13 Firearms | Registered | 1948 |
| WESTERN 0158534 · TMDA57079 | OLIN CORPORATION | 13 Firearms | Registered | 1933 |
| WESTERNU 0921616 | THE UNIVERSITY OF WESTERN ONTARIO | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 2012 |
| WESTERN 0903775 | THE BOARD OF GOVERNORS, THE UNIVERSITY OF WESTERN ONTARIO | 1 Chemicals2 Paints3 Cosmetics+42 | Pending | 1989 |
| WESTWARD 2019275 · TMA1264980 | RESIDENCES OF WESTERLY INC. | 35 Advertising36 Finance37 Construction | Registered | 2024 |
| WESTAR 1794777 · TMA1019378 | WESTAR DISTRIBUTION, LLC | 35 Advertising39 Transport | Registered | 2019 |
| WESTWARD 1776943 · TMA996454 | House Spirits Distillery LLC, Delaware limited liability company | 33 Wine | Registered | 2018 |
| WESTWARD 1770211 · TMA975425 · design | ACKLANDS - GRAINGER INC. | 6 Metal7 Machines8 Hand+3 | Registered | 2017 |
| WESTOR 1371317 · TMA738779 · design | Ag Growth International Inc. | 6 Metal | Registered | 2009 |
| WESTOR 1371315 · TMA738780 | Ag Growth International Inc. | 6 Metal | Registered | 2009 |
| WESTAR 1328673 · TMA706076 | WEST PHARMACEUTICAL SERVICES, INC. | 6 Metal17 Rubber20 Furniture+1 | Registered | 2008 |
| WesTrip 0881706 · TMA530497 | SURE-TRIP INC. | 9 Electronics | Registered | 2000 |
| WESTRAN 0876674 · TMA518986 | WESTRAN SERVICES LIMITED | 36 Finance39 Transport | Registered | 1999 |
| WESTAR 0623420 · TMA424446 | SANDGATE LTD. | 14 Jewellery | Registered | 1994 |
| WESTOURS 0561097 · TMA323629 | Holland America Line-USA Inc. | 39 Transport43 Restaurants | Registered | 1987 |
| WESTWARD 0528369 · TMA302796 | ACKLANDS - GRAINGER INC. | 4 Oils6 Metal7 Machines+9 | Registered | 1985 |
| WESTWARD 0379879 · TMA213044 | ACKLANDS - GRAINGER INC. | 6 Metal7 Machines8 Hand+3 | Registered | 1976 |