| Workolyk Technologies | |
| Workplace One Business Centres Ltd | Ontario |
| Works Avenue | Ontario |
| Works Design Communications Ltd | Ontario |
| WorkSight | |
| Workzoom | |
| World Connect | Ontario |
| World Energy GH2 | |
| World Exposure | British Columbia |
| World Famous Marketing | |
| World Web Guys | Ontario |
| World Web Technologies, Inc. | Alberta |
| World Wide Webdesign.ca | Ontario |
| World Wide Websites | |
| Worldline | Ontario |
| Worldplay (Canada), Inc. | |
| WorldReach Software | Ontario |
| WorldRemit, Inc. | Ontario |
| WorldSat International, Inc. | British Columbia |
| WorldWide Information Systems Corporation | Ontario |
| WorldWideSatellites | Ontario |
| Worximity | Quebec |
| Wosler Corporation | |
| Woveo | |
| Wow Factor Media | Saskatchewan |
| WOW! mobile boutique | |
| WP Expert | |
| WPG Solution | Ontario |
| WPGlobal Services | Quebec |
| WPlook Studio, Inc. | Quebec |
| WR Web Design and Multimedia | |
| Wraptel, Inc. | Ontario |
| Wriber, Inc. | |
| WristCoin, Inc. | |
| Writedesign | Ontario |
| Wrk Technologies, Inc. | |
| wrnch | Quebec |
| WRS Web Solutions, Inc. | |
| WSA Solutions | Prince Edward Island |
| WSI | Ontario |
| WSI Digital Path | |
| WSI eStrategies | |
| WSI Genesis | Ontario |
| WSI Lead generator | Ontario |
| WSI Markham | Ontario |
| WSI Montréal | Quebec |
| WSI Winnipeg | Manitoba |
| WSI Wise Web Marketing | Ontario |
| WTC Communications | Ontario |
| WTS Wireless | British Columbia |