WPA

• Wi-Fi Protected Access, a wireless encryption standard
• Windows Product Activation, in Microsoft software licensing
• Wireless Public Alerting (Alert Ready), emergency alerts over LTE in Canada
• Windows Performance Analyzer

• World Pool Association
• World Psychiatric Association

• Works Progress Administration or Work Projects Administration, a former American New Deal agency
• Washington Project for the Arts
• Western Psychological Association
• Women's Prison Association

• Whistleblower Protection Act, a law protecting certain whistleblowers in the USA
• War Powers Resolution or War Powers Act, a limitation of presidential powers
• War Powers Act of 1941, the authorization for United States entry into World War 2

• WPA, a 2009 album by Works Progress Administration (band)
• Win probability added, a baseball statistic
• Water pinch analysis
• Woomera Prohibited Area, a tract of land in South Australia covering more than 120,000 sq km of arid 'outback'
• Waterfowl production area, land protected through easements or purchase to conserve habitat for waterfowl in the United States
• An abbreviation for Western Pennsylvania

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