Castro - Chile - Airport symbol (AD)
Wackenhut Corrections Corp. (SAUS)
Warm Cranking Amperes - Battery - Automotive engineering
Warrant Claims Action - Army
Washington Council of Agencies (EARSL)
Washington Counseling Association (SEAT)
Waste Collection Authority (SAUS)
Water Companies' Association - British
Water Conservation Area
Waterproofing Contractors Association (NTPA)
Weapon Control Area - Military (CAAL)
Weimaraner Club of America (EA)
Wellness Councils of America (NTPA)
West Coast Airlines, Inc.
West Coast Airlines Ltd. - Ghana
West Coast of Africa (ROG)
Western Coal Association - Australia
Western College Association (EA)
Western Correctional Association (SAUS)
Who Cares, Anyway
Whole Core Accident - Nuclear energy (NRCH)
Wholesale Caterers' Alliance (BUAC)
Wholesale Confectioners Alliance Ltd. - British (BI)
Wideband Cassegrain Antenna
Wildlife Conservation Act (COE)
Willys Club of America - Later, WC (EA)
Wind Correction Angle - Aviation (DA)
Windmill Class Association (EA)
Wine Conference of America - Defunct (EA)
Winston S. Churchill Association - Defunct (EA)
Wireless Cable Association (TSSD)
Wireless Communications Association International (EA)
Wisco of Canada Ltd. - Vancouver Stock Exchange symbol
Women Contractors Association (EA)
Women's Caucus for Art (EA)
Women's Christian Association
Women's Cricket Association - British
Wood Carver's Association - British (DBA)
Wool Council of Australia (BUAC)
Work Capacity Assessment (DAVI)
Workers Compensation Act (SAUS)
Working-Capital Account (MHDW)
Workmen's Compensation Act
World Calendar Association (BUAC)
World Campus Afloat - Cruise ship educational program (EA)
World Casting Association (SAUS)
World Chiropractic Alliance (SAUS)
World Christian Action - Australia
World Citizens Assembly - Later, AWC (EA)
World Communication Association (EA)
Worst Case Analysis
Yanomami - Language code (ETLW)
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