TDA may refer to:

Finance

* Tax deferred annuity, a type of retirement plan under IRC Section

403(b) In the United States, a 403(b) plan is a U.S. tax-advantaged retirement savings plan available for public education organizations, some non-profit employers (only Internal Revenue Code 501(c)(3) organizations), cooperative hospital service organiz ...

Time deposit A time deposit or term deposit (also known as a certificate of deposit in the United States, and as a guaranteed investment certificate in Canada) is a deposit in a financial institution with a specific maturity date or a period to maturity, c ...

account *

TreasuryDirect TreasuryDirect is a website run by the Bureau of the Fiscal Service under the United States Department of the Treasury that allows US individual investors to purchase United States Treasury security, treasury securities, such as savings bonds ...

account, an account used to buy securities from the US Treasury * "Treasury Direct Account," a fraud scheme promoted in the

redemption movement The redemption movement is a pseudolaw movement, mainly active in the United States and Canada, that promotes fraudulent debt and tax payment schemes. The movement is also called redemptionism. Redemption promoters allege that a secret fund is ...

Organizations

Tautinio Darbo Apsaugos Batalionas The Lithuanian TDA (; ) Battalion or simply TDA, was a paramilitary battalion organized in June–August 1941 by the Provisional Government of Lithuania at the onset of Operation Barbarossa. Members of the TDA were known by many names such as Lithu ...

, auxiliary police unit In Lithuania in 1941 * Team Disney Anaheim, the administrative headquarters of the Disneyland Resort in California * Télédiffusion d'Algérie, an Algerian public service broadcasting and internet service provider *

Texas Department of Agriculture The Texas Department of Agriculture (TDA) is a state agency within the state of Texas, which is responsible for matters pertaining to agriculture, rural community affairs, and related matters. It is currently headed by Agriculture Commissioner S ...

Thomas Deacon Academy The Thomas Deacon Academy is a mixed gender academy complex in the north of Peterborough, Cambridgeshire, comprising the Thomas Deacon Academy Secondary School and sixth form and The Junior Academy for Key Stage 2 students. Thomas Deacon Acade ...

, a city academy in Peterborough *

Toa Domestic Airlines , also known as Japan Airlines Domestic since 2004, was the smallest of the big three Japanese airlines. In contrast to the other two, Japan Airlines, JAL and All Nippon Airways, ANA, JAS' international route network was very small, but its dome ...

, later known as Japan Air System * Tournament Directors Association, an organization that works to standardize poker tournament rules worldwide *

Training and Development Agency for Schools The Training and Development Agency for Schools (TDA) was a body responsible for the initial and in-service training of teachers and other school staff in England. It was an executive non-departmental public body of the Department for Education. ...

, a defunct British teacher training program * Tren de Aragua, a Venezuelan criminal organization *

United States Trade and Development Agency The U.S. Trade and Development Agency (USTDA) is an independent agency of the United States government, formed in 1992 to advance economic development and U.S. commercial interests in developing and middle income countries. Structure The U. ...

Television

The Disney Afternoon The Disney Afternoon (later known internally as the Disney-Kellogg Alliance when unbranded), sometimes abbreviated as TDA, was a created-for- syndication two-hour programming block of animated television series. It was produced by Walt Disney T ...

, a two-hour television programming block * '' Total Drama Action'', the second season of ''Total Drama''

Chemistry

Tris(2-(2-methoxyethoxy)ethyl)amine Tris(2-(2-methoxyethoxy)ethyl)amine is the organic compound with the formula . It is an amine and a polyether. Although samples can appear yellow, the compound is colorless. Tris(2-(2-methoxyethoxy)ethyl)amine used in phase transfer catalysis ...

* Toluenediamine

Other

* TDA, ISO 639-3 code for the

Gadal language Tagdal (Tuareg name: ''Tagdalt'') is a mixed Northern Songhay language of central Niger. Ethnologue considers it a "mixed Berber–Songhay language", while other researchers consider it Northern Songhay. Nicolaï (1981) argued that Tagdal was ...

* Taking and driving away, a term for auto theft under Scottish law * Tamm–Dancoff approximation, a method used in

many-body theory The many-body problem is a general name for a vast category of physical problems pertaining to the properties of microscopic systems made of many interacting particles. Terminology ''Microscopic'' here implies that quantum mechanics has to be ...

Temporary duty assignment Temporary duty travel (TDY), also sometimes referred to as Temporary Additional Duty (TAD) in the US Navy and US Marine Corps, is a duty status designation reflecting a US Government Employee's official travel or assignment at a location other th ...

, a United States Government employee travel assignment * Table of Distribution and Allowances (initialism: TDA, a type of temporary

US Army The United States Army (USA) is the primary land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of the United Stat ...

TOE Toes are the digits of the foot of a tetrapod. Animal species such as cats that walk on their toes are described as being ''digitigrade''. Humans, and other animals that walk on the soles of their feet, are described as being ''plantigrade''; ...

) *

Topological data analysis In applied mathematics, topological data analysis (TDA) is an approach to the analysis of datasets using techniques from topology. Extraction of information from datasets that are high-dimensional, incomplete and noisy is generally challenging. TDA ...

* Tornado detection algorithm, the replacement of the tornado vortex signature (TVS) * Traditional double action, a style of semi-automatic pistol action, also known as DA/SA {{disambiguation