Gtg, GTG, gtg, or G2G may refer to:
*
Grantsburg Municipal Airport
Grantsburg Municipal Airport is a public use airport located two nautical miles (3.7 km) northeast of the central business district of Grantsburg, a village in Burnett County, Wisconsin, United States. It is owned by the Village of Grantsb ...
(IATA code)
*
Gauge theory gravity
Gauge theory gravity (GTG) is a theory of gravitation cast in the mathematical language of geometric algebra. To those familiar with general relativity, it is highly reminiscent of the tetrad formalism although there are significant conceptual d ...
, a theory of gravitation
*
Geophysical Tomography Group, of the Institut de Physique du Globe de Paris
*
G2G Racing, an American stock car racing team
* GTG, a codon in the
DNA codon table
A codon table can be used to translate a genetic code into a sequence of amino acids. The standard genetic code is traditionally represented as an RNA codon table, because when proteins are made in a Cell (biology), cell by ribosomes, it is messen ...
for the amino acid valine
* G2G, government to government, in
e-governance
Electronic governance or e-governance is the application of information technology for delivering government services, exchange of information, communication transactions, integration of various stand-alone systems between government to citiz ...
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