| IWW | Industrial Workers of the World Cincinnati, [OH], http://www.iww.org/de |
| IWW/AI | International Workers of the World Oslo, http://www.anarchy.no/iwwai.html |
| IWW | International Workers of the World Heute: IWW/AI |
| ACTWU | Amalgamated Clothing Workers of America Heute: UNITE HERE |
| IFSW | International Federation of Social Workers |
| ERA | European Research Workers' Association |
| itf | International Transport workers Federation London, http://www.itfglobal.org |
| UAW | United Auto Workers [labor union, USA] |
| WWF | World Wide Fund for nature [World Wildlife Fund] |
| IPCI | Industrial PCI |
| IP | Industrial Products |
| IT | Industrial Technology |
| CIO | Congress of Industrial Organizations |
| JIS | Japan Industrial Standards |
| IIE | Institute of Industrial Engineers |
| IIC | Industrial Investment Council |
| SIC | Standard Industrial Classification |
| ISM | Industrial, Scientific, Medical |
| MIG | Main Industrial Groupings Industrie-Hauptgruppen |
| RIPP | Regional Industrial Property Programme Regionalprogramm für gewerbliche Eigentumsrechte |
| PICMG | PCI Industrial Computers Manufacturers Group |
| JISC | Japanese Industrial Standards Committee |
| ILV | Industrial Launch Vehicle [Weltraum] |
| ISFT | Industrial Siemens Flatpanel Technology |
| CCIO | Classification of Commodities by Industrial Origin Gütersystematik nach Herkunftsbereichen |
| FLIC | FORTRAN Language for Industrial Control |
| ISIS | Industrial Signature Interoperability Specification |
| ILM | Industrial Light + Magic, Inc. [G. Lucas] |
| BRITE | Basic Research in Industrial Technologies for Europe EG-Forschungsprogramm |
| ISIS | Industrial Signature Interoperability Specification committee |
| AIHA | American Industrial Hygiene Association [engl.] Amerikanischer Verein für Arbeits- und Umweltsicherheit |
| ASIS | American Society for Industrial Security [engl.] |
| AFL-CIO | American Federation of Labor - Congress of Industrial Organizations |
| AIST | National Institute of Advanced Industrial Science and Technology [engl.] Japan, http://www.aist.go.jp |
| WW I | World War I |
| WW | World War |
| WW II | World War II |
| WOS | World of Sex Erotikshop-Kette |
| World Wood | World Wood Zeitschrift |
| WC | World Coordinate |
| WP | World Politics Fachzeitschrift |
| World Archeol. | World Archaeology Zeitschrift |
| TW | Thieves' World Phantastische Literatur von Robert Asprin |
| RTW | Round the World Weltumrundung im Ballon/ Wettbewerb |
| WWW | World Wide Web |
| WWW | World Wide Web [W3] |
| EXPO | World Exposition Weltausstellung |
| GW | Gamma World |
| MOW | Mapping Our World |
| ROW | Rest Of the World |