BTA

BTA may refer to:


 * Butyric acid
 * Baltimore Transit Alliance
 * Basic Trading Area, a geographical area defined by the U.S. Federal Communications Commission
 * Becoming the Archetype, a Christian metal band
 * Benzotriazole
 * Bicycle Transportation Alliance
 * Bilateral trade agreement
 * Bilateral Terran Alliance, a fictional human alliance in the 1985 film Enemy Mine
 * Biological Terrain Assessment
 * Black Theatre Alliance, a federation of theater companies in New York City
 * BlueTooth Address
 * Bolshoi Teleskop Azimutalnyi, a 6 m telescope located in Russia
 * Botswana Telecommunications Authority
 * British Tourist Authority
 * British Triathlon Association, the former name of the British Triathlon Federation
 * BTA Bank, of Kazakhstan, formerly Bank TuranAlem
 * Bulgarian News Agency
 * Business Technology Association
 * Business Transformation Agency
 * Board of Tax Appeals
 * Blair Municipal Airport, Blair, Nebraska (FAA LID code)
 * Bertoua Airport, Bertoua, Cameroon (IATA code)