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WACA may refer to:

  • WACA (AM), a radio station (1540 AM) licensed to Wheaton, Maryland, United States
  • WACA Ground, a stadium in Perth, the home of the Western Australian Cricket Association
  • Waca Lake, a lake in the United States
  • Western Australian Cricket Association, Australian cricket governing body
  • Wide area circumferential ablation, a surgical procedure of the heart
  • World Affairs Councils of America, an American international affairs organization

WACA is a radio station broadcasting on 1540 kHz in the mediumwave AM band. It is a Spanish language news and talk station broadcasting as Radio America. Its transmitter is located in Wheaton, Maryland and it serves the Washington, D.C. metropolitan area. WACA has a daytime transmitter power of 5,000 watts, reaching as far north as Frederick County in Maryland and as far south as Stafford and Prince William Counties in Virginia. WACA's signal is also available (via a special SCA receiver) on a subcarrier of WASH.