ITG may refer to:
Organizations Iraqi Transitional Government (2005–2006), former ruling institution of Iraq International Textile Group, American textile firm International Trumpet Guild, trumpet players' organization Investment Technology Group, American firm In the Game Trading Cards, a manufacturer of hockey trading cards Institute of Tourist Guiding, UK's official tourist body Irish Traction Group, Irish railway preservation society ITG Brands, the US subsidiary of Imperial Tobacco Group
Science and technology Integrin, a type of membrane protein Inferior temporal gyrus, a region of the brain IT governance
Other uses In The Groove (video game), a music video game
See also Interconnector Turkey–Greece–Italy (ITGI), a natural gas pipeline