IWC may refer to:
Organisations Industrial Welfare Commission, Californian wage regulation body Institute for Workers' Control, a defunct British Marxist organisation International Water Centre, provides education and training, applied research and expert services in integrated water resource management International Whaling Commission, international body regulating whaling International Wheat Council, former name of the International Grains Council International Wolf Center, a wolf education facility based in Minnesota Irish Wildbird Conservancy, former name of BirdWatch Ireland
Events IAAF World Challenge, an annual global circuit of fourteen one-day athletics competitions organized by the IAAF Independent Water Commission, British government review of water industry regulation International Wheelset Congress, an annual international rail conference UIAA Ice Climbing World Cup, and annual tour event that is also known as the IWC
Companies Industrial Water Cooling, a cooling tower manufacturer in Johannesburg, South Africa Imperial War Cabinet, the British Empire's wartime coordinating group International Watch Company, a luxury Swiss watch manufacturer
Other Inch of water (Inches Water Column), a measure of pressure Internet wrestling community, a nickname given to online postings or forums by fans of professional wrestling Iowa Wesleyan College, a liberal arts college located in Mount Pleasant, Iowa International Wrestling Cartel, a professional wrestling promotion based in Pittsburgh