TTG may refer to:
Medicine, science and technology Tissue transglutaminase (tTG), an enzyme Tonalite-trondhjemite-granodiorite, an association of three closely related rock types, found particularly in crust of Archean age 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!