WTA

WTA may refer to:

Organizations

 * Washington Trails Association
 * Whatcom Transportation Authority
 * Waskahegan Trail Association, the management board for the Waskahegan Trail
 * Water Transit Authority, former name of the San Francisco Bay Area Water Emergency Transportation Authority
 * Whatcom Transportation Authority, a bus agency in Washington State, USA
 * Wichita Terminal Association, a railroad
 * Wisconsin Towns Association
 * Women's Tennis Association
 * World Transhumanist Association, former name of Humanity+

Other uses

 * Wall teichoic acid, teichoic acids that are covalently bound to peptidoglycan in bacteria
 * Warcop Training Area, a UK Ministry of Defence military training area, Cumbria, North West England
 * Weapon target assignment problem
 * Willingness to accept
 * Winner takes all (disambiguation)