TTG

TTG may refer to:

Medicine, science and technology

 * Tissue transglutaminase (tTG), an enzyme
 * Tonalite-trondhjemite-granodiorite, a type of rock
 * Transmit/receive transition gap in communications
 * TTG, a codon for the amino acid Leucine

Video, arts and culture

 * TTG Studios, Los Angeles, US

Other

 * Travel Trade Gazette
 * Tilhas Tizig Gesheften, also known as the TTG or the TTG Brigade
 * Teen Titans Go!