TG

TG or Tg may stand for:
* an alternate abbreviation for "tangent" used in China and Russia (mathematical abbreviation)
* an abbreviation for Thanksgiving
* an abbreviation for Tear Gas
* an abbreviation for Top Gear, in its various forms.
* an abbreviation for Traditional game
* an abbreviation for Transformational grammar
* an abbreviation for transgender
* Talbot Gardens, a hockey arena in Norfolk County, Ontario, Canada
* Tarski-Grothendieck set theory, an axiomatic set theory
* Thurgau, a canton in Switzerland
* "Ferdinand Tönnies Gesamtausgabe", the complete work edition of Ferdinand Tönnies
* the IATA airline code for Thai Airways International
* Industrial music progenitors Throbbing Gristle
* Thomas Hopkins Gallaudet, founder of Gallaudet University for deaf, hard-of-hearing, and hearing students.
* TG (fanart), a fetish in fanart
* The Gathering (computer party), one of Europe's largest computer parties
* T_g, glass transition temperature
* Thermogravimetry
* Thyroglobulin (a protein)
* a teragram, a unit of mass equal to one megatonne
* Tommy Grant, a white supremacy leader.
* Toyota Group
* TG Sambo, a Korean computer manufacturer
* TG Xers, a team in the Korean Basketball League, now renamed Wonju Dongbu Promy
* Târgu-Mureş, a Romanian city.
* Tank Grote (sometimes misspelled "Grotte"), an experimental multi-turreted Soviet medium tank
* Windows TG, a fictional operating system featured in the show Mega64
* Transmission gate
* Theodore Goddard, the eponymous law firm established by John Theodore Goddard, solicitor to Wallis Simpson
* The ISO 639-1 code for the Tajik language
* The Messerschmitt TG500, a four-wheeled car designed by German engineer Fritz Fend based on his three-wheeled Messerschmitt KR200 microcar
* Triglyceride
* Turbo Gears, a Python web application framework
* Third Grade, the grade proceded by second grade and followed by fourth grade
* Tenth Grade, the grade proceded by ninth grade and followed by eleventh grade