TTG may refer to:
Medicine, science and technology
edit- 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
edit- TTG Studios, Los Angeles, US
Other
edit- Travel Trade Gazette
- Tilhas Tizig Gesheften, also known as the TTG or the TTG Brigade
- Teen Titans Go!