TPA may refer to:

Business and finance Third-party access, a competition principle regarding natural resources Third-party administrator for processing insurance claims and retirement plans Tonnes per annum Tons per acre, wine grape production term for estimating yield

Law Trade Practices Act 1974, Australian competition law legislation Trade Promotion Authority, a power of the US president

Organisations Political Union of Economists (), former Latvian political party TaxPayers' Alliance, a British free-market lobby group Tempe Preparatory Academy, a preparatory secondary school in Arizona, U.S. Texas Pharmacy Association, U.S. Theta Phi Alpha a collegiate women's fraternity. Formerly known as TPA, now Theta Phi Alpha. Travelers Protective Association of America

Science and medicine Terephthalic acid, an aromatic acid and monomer used in many plastics Tetradecanoyl phorbol acetate (12-O-Tetradecanoylphorbol-13-acetate), a tumor promoter drug Tissue-type plasminogen activator (tPA), a fibrinolytic enzyme in biochemistry and medicine Transpalatal arch, an orthodontic device Tris(2-pyridylmethyl)amine Two-photon absorption

Television Televisão Pública de Angola, the state-owned TV station in Angola Televisión Pública Argentina, a television network in Argentina Television Programs of America, a television production company of the 1950s Televisión del Principado de Asturias, broadcaster in Asturias, Spain

Transport Tampa International Airport, by IATA code Tanzania Ports Authority Toronto Parking Authority, Canada Toronto Port Authority, Canada

Other Taipei Assassins, a Taiwanese esports team Terapascal (TPa), a unit of pressure or stiffness Terminal Portuario de Arica, an important port in northern Chile The Pinball Arcade, a pinball video game developed by FarSight Studios Thermal Protective Aid, an aluminized polyethylene suit Thickened pyrophoric agent, triethylaluminium used as an incendiary weapon Third-party authentication, term usually applied to an app which enables a type of multi-factor authentication TPA Tour, name for the US golf PGA Tour for a few months in 1981–82 Trade Practices Act 1974, the predecessor to the Competition and Consumer Act 2010, Australian legislation Transient program area, in a CP/M computer system

See also