| 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 eStrategies | |
| WSI Genesis | Ontario |
| WSI Lead generator | Ontario |
| WSI Markham | Ontario |
| WSI Montréal | Quebec |
| WSI Winnipeg | Manitoba |
| WSI Wise Web Marketing | Ontario |
| wT | British Columbia |
| WTC Communications | Ontario |
| WTS Wireless | British Columbia |
| WTSS | Manitoba |
| Wulver Digital Advertising | Alberta |
| WunderSolutions.com | Ontario |
| WW Works, Inc. | Ontario |
| wwwebworks.ca | Ontario |
| WWWHostingServer | Quebec |
| wx3data | Quebec |
| WYK Web Solutions | Alberta |
| Wyka-Warzecha | Ontario |
| Wynquest Technical Solutions Ltd | British Columbia |
| Wynsoft Systems, Inc. | Ontario |
| Wysdom | Ontario |
| Wytek Design | British Columbia |
| Wyvern, Inc. | Alberta |
| X Info Design | Quebec |
| X-CD Technologies, Inc. | Ontario |
| X-Cel Communications, Inc. | Alberta |
| X2 Studios Ltd | Alberta |
| X2O Media | Quebec |
| Xacte | |