W
WAPA - Western Area Power Administration (division of the U.S. Department of Energy responsible for the marketing and transmission of wholesale electricity from multi-use water projects in a 15-state region of the central and western U.S.)
WHD - Wage and Hour Division
WHS - Washington Headquarters Services
WMD - Weights and Measures Division
WPMA - West Point Military Academy
WS - Weather Service
WTB - Wireless Telecommunications Bureau