TTA

TTA may refer to


 * Tan Tan Airport, Morocco, IATA code
 * Teacher Training Agency, former name of the Training and Development Agency for Schools, England
 * Technical Theatre Awards, UK
 * Terran Trade Authority, the setting for a series of science-fiction books
 * Tetradecylthioacetic acid, a fatty acid
 * The Three Amigonauts, a cartoon series
 * The Tough Alliance, a synthpop duo from Sweden
 * Thenoyltrifluoroacetone, a chelating agent also commonly known as TTFA
 * Tibial tuberosity advancement, a knee operation in dogs
 * Tiny Toon Adventures, an animated television series
 * Toledo Technology Academy, a public high school in Toledo, Ohio, US
 * Tomorrowland Transit Authority PeopleMover, in Tomorrowland in Magic Kingdom at Walt Disney World Resort in Orlando, Florida
 * Total TEU Allowance
 * Tramway Touristique de l'Aisne, a tourist tramway in Belgium
 * Transport Ticketing Authority, Victoria, Australia
 * Transport triggered architecture, computer processor design
 * Triangle Transit Authority, a regional transit service in North Carolina, US
 * Tri-State Transit Authority, a transit service in the Huntington, West Virginia, US area
 * Ṭa (Indic), the eleventh consonant of Indic abugidas
 * Transfusion-transmitted anaplasmosis, a human bacterial infection caused by blood transfusion
 * TTA – Racing Elite League, a Swedish touring car championship
 * TTA, a codon for the amino acid Leucine