WPA
- Performance Analyzer
- War Powers Act of 1941
- War Powers Resolution
- Washington Project for the Arts
- Water pinch analysis
- Waterfowl production area
- Western Pennsylvania
- Western Psychological Association
- Whistleblower Protection Act
- Wi-Fi Protected Access
- Win probability added
- Windows Product Activation
- Wireless Public Alerting
- Women's Political Association of Victoria
- Women's Prison Association
- Woomera Prohibited Area
- Works Progress Administration
- Works Progress Administration (band)
- World Pool Association
- World Psychiatric Association