| Sigle | Nom |
|---|---|
| W3C | World Wide Web Consortium |
| WAAWG | Western Australian Automation Working Group |
| WADA | World Anti-Doping Agency |
| WAN-IFRA | WAN-IFRA |
| WANO | World Association of Nuclear Operators |
| WAP | World Animal Protection |
| WAPOR | Association mondiale de recherches sur l'opinion publique (WAPOR) |
| WASLI | World Association of Sign Language Interpreters |
| WASPaLM | World Association of Societies of Pathology and Laboratory Medicine |
| WBCSD | World Business Council for Sustainable Development |
| WBU | Union mondiale des aveugles |
| WCA | World Coal Association |
| WCF | World Cocoa Foundation |
| WCFO | World Cocoa Farmers Organization |
| WCO | Organisation mondiale des douanes |
| WDO | World Design Organization |
| Web3D | Web3D Consortium |
| WEC | Conseil mondial de l'énergie |
| WEF | World Economic Forum |
| WFAS | World Federation of Acupuncture and Moxibustion Societies |
| WFCMS | World Federation of Chinese Medicine Societies |
| WFEO | World Federation of Engineering Organizations |
| WFHSS | World Federation for Hospital Sterilisation Sciences |
| WFN | Stichting Water Footprint Network |
| WFO | World Foundrymen Organization |
| WFP | World Food Programme |
| WFPMA | World Federation of People Management Associations |
| WFSA | Fédération mondiale des sociétés d'anesthésiologistes |
| WFSGI | Fédération mondiale de l'industrie d'articles de sports |
| WFTGA | World Federation of Tourist Guides Associations |
| WGIC | World Geospatial Industry Council |
| WHO | Organisation mondiale de la santé |
| WHO-ECEH | WHO European Centre for Environment and Health |
| Wi-Fi Alliance | Wi-Fi Alliance |
| WIN | Worldwide independent network |
| WIPO | Organisation mondiale de la propriété intellectuelle |
| WITDOM | empoWering prIvacy and securiTy in non-trusteD envirOnMents |
| WLGA | World Liquid Gas Association |
| WMBC | We Mean Business Coalition, Inc |
| WMO | Organisation météorologique mondiale |
| WNA | World Nuclear Association |
| WNTI | World Nuclear Transport Institute |
| WOAH | Organisation mondiale de la santé animale |
| WOC | World Ocean Council |
| WONCA | World Organization of Family Doctors |
| World Shipping Council | World Shipping Council |
| World Steel Association | Institut international du fer et de l'acier |
| WorldCC | World Commerce & Contracting |
| WPO | Organisation mondiale de l'emballage |
| WRA | World Refractories Association |
| WRAP | The Waste & Resources Action Programme |
| WRI | World Resources Institute |
| WRI - PACE | World Resources Institute Europe Stichting |
| WRSTC | World Recreational Scuba Training Council |
| WS | World Sailing (WS) |
| WSI | World Stewardship Institute |
| WTCF | World Tourism Cities Federation |
| WTO | Organisation mondiale du commerce |
| WWF | Fonds mondial pour la nature |
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