TT

TT, Tt, tt, or .tt may refer to:

Arts and entertainment

TT Electronics, a British maker of automotive components
TT-Line Company, a ferry company operating from Tasmania to Australia
Order and Justice (Lithuanian: Tvarka ir teisingumas), a Lithuanian political party
Tidningarnas Telegrambyrå, a Swedish news agency
Toytown Germany, a web site for English-speaking foreigners in Germany
Traveller's Tales, a British software producer
Türk Telekom, a Turkish telephone company
Tigerair Australia (IATA code TT)

.tt, the country code top-level domain for Trinidad and Tobago
<tt>...</tt> (short for teletype), an HTML presentation element that writes text in monospace font
Atari TT030, a computer based on the Motorola 68030 CPU
Template Toolkit, a Perl template engine
Transaction translator, a particular unit in USB hubs
TrueType, a font format
Truth-table reduction (or tt-reduction), a kind of transformation used in computability theory

Table tennis
Time trial, in racing sports, a race against the clock to secure the fastest time
Tourist Trophy (disambiguation), several meanings
- Dutch TT, a motorcycling event, held on the last Saturday of June
- Isle of Man TT, an annual motor-cycle racing event held on the Isle of Man
- Welsh TT, historic motorcycle road races originally held annually on Pendine Sands, Wales, UK circa 1920
- Welsh TT, historic motorcycle road races originally held annually at Mynydd Epynt, Wales, UK circa 1950
TT Pro League, a professional association football league for clubs in Trinidad and Tobago
TT Zero, an Isle of Man TT race for solo motorcycles producing low-emissions

"TT", an emoticon indicating tears streaming from the eyes
Audi TT, a 2-door sports car produced by Audi
TT bar, a ten tola gold bar traded in 3.75 oz (117 g) weights
TT pistol, a Soviet military automatic pistol designed by Fedor Tokarev
Tatar language (ISO 639-1 code)
Theban Tombs, or discovered tombs of the Theban Necropolis
Trinidad and Tobago (ISO 3166 digram), an archipelagic state in the southern Caribbean