EWC is a three-letter abbreviation which may represent
Conference on Early Warning
Earth Watchers Center, in Iran
Earth Worm Castings for the Gardeners
East West Center at Hawaii
Eastern Wyoming College
Elder Wisdom Circle
Electric Water Cooler
Extreme Wrestling Company
Enhanced Wireless Consortium
European Waste Catalogue
Encounters With Canada
Ekurhuleni West College, in South Africa
Endangering the welfare of a child
European Writers' Council, an umbrella organisation uniting writers' and literary translators' associations from Europe and neighbouring regions (until 2006 the name was European Writers' Congress)
European Works Council
Expected Week of Childbirth
Excellence Without Compromise
Eastern Wyoming College
iShares MSCI Canada Index Fund
Edward Waters College
AAES's Engineering Workforce Commission
Effective Writing Center
UMass Amherst: Everywoman's Center
Eastern Wisconsin Conference
Enhanced Wireless Consortium, WLAN IEEE 802.11n standards
Every Woman Counts, The California Department of Public Health Cancer Detection Programs
Elder Wisdom Council
Nothing that bad there....