- Works Progress Administration (later "Works Projects Administration"), a U.S. government employment agency (1935–1943)
- Washington Project For The Arts , an arts organization based in Washington, D.C.
- Walter Payton Award , in U.S. Division I-AA football
- War Powers Act , a U.S. federal law, also known as the "War Powers Resolution"
- Weddings Parties Anything , an Australian band
- Western Pennsylvania
- Western Provident Association , UK-based health insurer
- Western Pyrotechnic Association , an American pyrotechnics guild that meets biannualy in Lake Havasu City
- White Patriot Army , U.S.-based paramilitary White Supremacist organization
- Wi-Fi Protected Access , a wireless encryption standard
- Win Probability Added , a technical baseball statistic
- Woomera Prohibited Area , a former weapons testing range
- Working People's Alliance , Guyanese political party
- World Pheasant Association
- World Poker Association , the international governing body of tournament poker worldwide
- World Pool-Billiard Association , the international governing body of pocket billiard sports
- Windows Product Activation , a software licensing strategy in Microsoft Windows XP , Office XP and later versions
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