| WAEMU | West African Economic and Monetary Union |
| WAIPU | World Association of Investment Promotion Agencies |
| WCO | World Customs Organization |
| WDR | World Development Report |
| WEF | World Economic Forum |
| WEU | Western European Union |
| WFP | World Food Programme |
| WG | Working Group |
| WHFTA | Western Hemisphere Free Trade Agreement |
| WIPO | World Intellectual Property Organization |
| WIR | World Investment Report |
| WIPPS | Working Party on Professional Services |
| WLN | (APEC) Women Leaders' Network |
| WP | (WTO) Working Procedures |
| WSSD | World Summit on Social Development |
| WTO | World Trade Organization |