| Walk-Through Tech | Alberta |
| WalkerWare | Ontario |
| Wallace McCain Institute for Business Leadership | |
| WallaceDesign.com | Ontario |
| Wallop | British Columbia |
| Walnut Grove Computers | British Columbia |
| Walter Interactive | Quebec |
| Walvis Technologies | |
| Wan Tech Solutions | |
| Wanas Web Developments | |
| Wanderland Agency | |
| Wappo Information Services | Alberta |
| Ward Technology Talent | Ontario |
| Ward-Beck Systems Ltd | Ontario |
| Warner Brothers Games Montréal | Quebec |
| Warped Systems | Saskatchewan |
| Warwood Office Equipment (Edmonton) Ltd | Alberta |
| Waskow Technologies | |
| Waste Robotics, Inc. | |
| Watcha Games | Quebec |
| WatchNET, Inc. | |
| Water Delivery Solutions | Ontario |
| Waterbear Cloud Technologies, Inc. | |
| Watercom Engineering | Ontario |
| Waterford Energy Services, Inc. | |
| Waterfront Computer Co. | |
| Waterloo Alumni Angels | Ontario |
| Waterloo Centre for Automotive Research | Ontario |
| Waterloo Design House | Manitoba |
| Waterloo EDC | Ontario |
| Waterloo Innovation Summit | Ontario |
| Waterloo Institute for Nanotechnology | Ontario |
| Waterloo Intuition | |
| Waterloo Managed Software Services Ltd | Ontario |
| Waterloo Networks, Inc. | Ontario |
| Waterloo Region Small Business Centre | Ontario |
| WaterlooIT, Inc. | |
| WaterPower Canada | |
| Waterstreet Technology Group, Inc. | British Columbia |
| WaterWerks | Newfoundland and Labrador |
| Watsec Cyber Risk Management | Ontario |
| Wattech Web | Quebec |
| Wattpad | Ontario |
| WaudWare, Inc. | Ontario |
| Wave Accounting, Inc. | Ontario |
| WaveBase, Inc. | |
| Wavepoint M&A, Inc. | Ontario |
| Waves In Space | Ontario |
| Waves MVMNT | |
| WaveSoft | |