WAAA

WAAA may refer to:


 * Women's Amateur Athletic Association, former governing body of athletics for women in England
 * Wiltshire Air Ambulance Appeal, a charity that raises money for the Wiltshire Air Ambulance
 * We Are America Alliance, a national alliance of immigrant rights organizations and allies in the United States
 * WAAA-LD, a low-power television station (channel 16, virtual 49) licensed to serve Valparaiso, Indiana, United States; see List of television stations in Indiana
 * WTOB (AM), a radio station (980 AM) licensed to Winston-Salem, North Carolina, United States, which used the call sign WAAA until June 2006
 * WKZL, a radio station (107.5 FM) licensed to Winston-Salem, North Carolina, which once used the call sign WAAA-FM
 * the ICAO code for Sultan Hasanuddin International Airport
 * Lipid IVA 3-deoxy-D-manno-octulosonic acid transferase, an enzyme
 * (KDO)2-lipid IVA (2-8) 3-deoxy-D-manno-octulosonic acid transferase
 * (KDO)3-lipid IVA (2-4) 3-deoxy-D-manno-octulosonic acid transferase