| Work-Skill Instruction | Academic & Science |
| Workstation Solutions, Incorporated | Business |
| Weather Services International | Business |
| Warehouse Services Incorporated | Business |
| Warehouse Specialists Inc | Business |
| Waste Systems Inc | Business |
| Warehouse Services Inc | Business |
| Washington Square Institute | Business |
| Weatherly Systems, Incorporated | Business |
| Western States Insurance | Business |
| Weidmann Systems International, Inc. | Business |
| Ward Synthesis, Inc. | Business |
| We Simplify the Internet | Business |
| WebSavvy Incorporated | Business |
| Workplace Syst. | Business |
| Waste Services Inc | Business |
| The Wildlife Society, Inc. | Community |
| Why Should I | Computing |
| Wireless Strategic Initiative | Computing |
| Web Services Interoperability | Computing |
| Window Set Interval | Computing |
| Web Server Integration | Computing |
| Web Services Internationalization | Computing |
| Wafer-scale Integration | Electronics |
| Water Separation Instrument | General |
| World Sites International | General |
| Web Services Internal | General |
| Wireless System Integration | General |
| War Service Increment | General |
| Water Soluble Index | General |
| WhatPulse Signature Images | General |
| Watch Style Is | General |
| Water Stress Index | General |
| Web Services Interface | General |
| Water Separation Instruments | General |
| Web Service Interface | General |
| Women in the Seafood Industry | General |
| Water Smart Innovations | General |
| Wojskowe Służby Informacyjne | General |
| Winter Severity Index | General |
| Wojskowych Służb Informacyjnych | General |
| Will Share Index | General |
| Web Service Interoperabillity | General |
| Watch Style Insider | General |
| Water Safety Instruction | Governmental |
| Wall Street Institute | Governmental |
| Workforce Safety and Insurance | Governmental |
| We Simplify Internet | Internet |
| We Simpify the Internet | Internet |
| Water Safety Instructor | Jobs |
| Weapons System Integration | Military and Defence |
| W S Industries (India) Limited | NSE Company Symbol |
| World Sports International | Sports |
| World Submarine Invitational | Sports |
| Wireless Services Integration | Telecommunication |
