| Acronym | Definition |
|---|
| IWC | International Whaling Commission |
| IWC | International Watch Company (Swiss watch manufacturer) |
| IWC | Integrated Work Center (Hewlett Packard) |
| IWC | Institute of World Culture |
| IWC | Iowa Wesleyan College |
| IWC | Illinois Workers' Compensation |
| IWC | Inner Wheel Club |
| IWC | In Which Case |
| IWC | Industrial Welfare Commission |
| IWC | Isle of Wight Council (UK) |
| IWC | Internet Wireless Web Camera |
| IWC | Intranetware Client |
| IWC | Internet Wireless Communications |
| IWC | Ice Water Content |
| IWC | International Workshop Criteria (oncology) |
| IWC | Internet Wrestling Community |
| IWC | International Wrestling Cartel (Pittsburgh, PA) |
| IWC | Indian Water Closet |
| IWC | International Wolf Center (Ely, Minnesota) |
| IWC | Indianapolis Water Company |
| IWC | Industrial Waste Control (various organizations) |
| IWC | Institute of Wood Chemistry (Latvia) |
| IWC | International Waters Conference |
| IWC | Ikepod Watch Company (Switzerland) |
| IWC | International Wheat Council |
| IWC | Inspiring Working Conditions (Bosch Group) |
| IWC | Integrated Warfighting Capability (US DoD) |
| IWC | International Whistlers Convention |
| IWC | Inches Water Column |
| IWC | International Worship Center (various locations) |
| IWC | In-stream Waste Concentration |
| IWC | Idaho Wheat Commission |
| IWC | Interactive Writing Community |
| IWC | Intelligent-Well Completion (subsea) |
| IWC | Information Warfare Commander (US Navy) |
| IWC | Inside Wiring Cable |
| IWC | Indoor Wireless Communication |
| IWC | Interim Workforce Capacity (NATO) |
| IWC | Issue Worthless Check |
| IWC | Intensified WHO Cooperation |