NTA may refer to:
Organizations
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