NTA

NTA may refer to:

Government

 * National Tax Agency, the official tax collecting agency of Japan
 * National Testing Agency, government agency which conducts entrance examinations for higher educational institutions in India
 * National Transport Authority (Ireland), the public transport licensing agency for Ireland
 * National Treasury Administration, the agency of the Ministry of Finance in Taiwan
 * National Treatment Agency for Substance Misuse, was a special health authority in England
 * Nepal Telecommunications Authority
 * Nigerian Television Authority, a government-owned broadcasting television network in Nigeria
 * Northern Territory Administration, an Australian Government department prior to self-government

Other

 * National Tax Association, a non-profit organization in United States
 * National Telefilm Associates, was an independent film distribution company
 * National Television Awards, a British awards ceremony
 * Natural Science and Technical Academy Isny, a private German university
 * Newark Teachers Association, a trade union in California, United States
 * NTA Film Network, a former American television network
 * Nuclei Territoriali Antimperialisti, an Italian terrorist group

Other uses

 * Nanoparticle Tracking Analysis, a method for visualizing and analyzing particles
 * Native Title Act 1993, Australian federal legislation
 * Neighborhood Tabulation Area, a geographical unit used for projecting demographics of New York City
 * New Transatlantic Agenda, establishment of relations between the US and EU, agreed to in 1995.
 * Newton Abbot railway station, Devon, England
 * Nitrilotriacetic acid, an aminopolycarboxylic acid