MTA may refer to:

Organizations Transportation Metropolitan Transportation Authority, the public transport agency in the metropolitan area of New York City, United States Metropolitan Transit Authority (disambiguation), which may refer to several public transport/transit agencies Flint Mass Transportation Authority, Genesee County, Michigan Maine Turnpike Authority, Maine Manchester Transit Authority, New Hampshire Maryland Transit Administration Massachusetts Bay Transportation Authority, formerly Metropolitan Transit Authority Massachusetts Turnpike Authority Mendocino Transit Authority, California Mountain Ash railway station, Wales, National Rail station code Nashville Metropolitan Transit Authority, doing business as WeGo Public Transit, Tennessee San Francisco Municipal Transportation Agency, California Los Angeles County Metropolitan Transportation Authority Mersin-Tarsus-Adana Railway, a defunct Ottoman railway company Master Top Airlines, a defunct Brazilian airline company

Education Hungarian Academy of Sciences (Magyar Tudományos Akadémia), Budapest, Hungary Marsha Stern Talmudical Academy, an Orthodox Jewish private high school in New York, New York, US Mount Allison University, a university in Sackville, New Brunswick, Canada Musical Theatre Academy, a drama college based in London, UK

Other Metrolina Theatre Association, an organization which advocates performing arts in Charlotte, North Carolina, US MTA Records, More Than Alot Records, a record label MTA International, Muslim Television Ahmadiyya International, a satellite television network Move to Amend, a U.S. political advocacy organization that seeks to amend the Constitution Manufacturing Technologies Association, a UK trade association Market Technicians Association, a non-profit organization of technical analysts General Directorate of Mineral Research and Exploration (Turkey), known as MTA Michigan Townships Association, an association of US township governments Mong Tai Army, an armed rebel group Metro Transit Assassins, a graffiti collective

Sports Maccabi Tel Aviv, a sports club in Israel Maccabi Tel Aviv B.C., basketball team Maccabi Tel Aviv F.C., football (soccer) team Maximum time aloft, a sporting event with a boomerang

Science and technology methylthioadenosine, a cofactor in biochemistry 4-Methylthioamphetamine, a designer drug of the substituted amphetamine class developed in the 1990s Material transfer agreement, governing the transfer of research materials between two organizations Mineral trioxide aggregate, dental material, used in endodontics and vital pulp therapy MTA (Swedish: Mobiltelefonisystem A), a former manual mobile network in Sweden Medial temporal lobe type of brain atrophy. Mousterian of Acheulean tradition (fr), a cultural and technological facies of the Mousterian

Computing Cray MTA-2, a supercomputer based on the design of the never-built Tera MTA Message transfer agent or mail transfer agent, software that transfers e-mail between computers Multi-touch attribution is a form of attribution (marketing) Multimedia terminal adapter, a combination cable modem and telephone adapter Multi-Threaded Apartment, a concept used in Microsoft's Component Object Model programming architecture Microsoft Technology Associate, a certification scheme run by Microsoft

Gaming Multi Theft Auto, a mod for computer games in the PC game series Grand Theft Auto

Other uses "M.T.A." (song), or "Charlie on the M.T.A.", a 1959 hit song by The Kingston Trio Major trading area, a geographic region of the US surrounding a major city; See List of Basic Trading Areas Mall Taman Anggrek, a shopping center in West Jakarta, Indonesia Mid-term adjustment, a change in an insurance policy Military Technical Agreement, treaty ending the Kosovo War in June 1999 Milk Tea Alliance, an online democracy and human rights movement Farmall M-TA, a widely used model in the Farmall M tractor series UAC/HAL Il-214 Multirole Transport Aircraft, a planned medium-lift military transport

See also Metastasis-associated protein: MTA1 MTA2 MTA3