Government and military

• War Powers Act, a U.S. federal law, also known as the "War Powers Resolution"
• Western Pennsylvania
• Woomera Prohibited Area, a former weapons testing range
• Working People's Alliance, a Guyanese political party
• Works Progress Administration (later "Works Projects Administration"), a U.S. government employment agency (1932–1943)

Information technology

• Wi-Fi Protected Access, a wireless encryption standard
• Windows Product Activation, a Microsoft software licensing strategy
• WAN Performance Acceleration, a service provided by NTT Com using Riverbed Steelhead Appliance

Music

• Weddings Parties Anything, an Australian band
• Works Progress Administration , an American band featuring Glen Phillips, Sean Watkins and Luke Bulla

Organizations

• Western Provident Association, a UK-based health insurer
• Western Pyrotechnic Association, an American pyrotechnics guild that meets biannually in Lake Havasu City
• Women's Prison Association, the oldest advocacy group for women in the United States.
• World Pool-Billiard Association, the international governing body of pocket billiard sports
• Washington Project for the Arts, an arts organization based in Washington, D.C.
• World Pheasant Association,an organisation to protect pheasants worldwide

Sports

• Walter Payton Award, in U.S. Division I-AA football
• Win Probability Added, a technical baseball statistic