ICG

ICG may refer to

• ICG Communications
• Illinois Central Gulf Railroad
• Impedance cardiography, a hemorheology technique for detecting the properties of the blood flow in the thorax
• Incitement to commit genocide
• Indian Coast Guard
• Icelandic Coast Guard
• Indocyanine green
• Institute of Cosmology and Gravitation, University of Portsmouth, England
• Intelligence Collection Group, part of the United Kingdom's Defence Intelligence Staff
• Intermediate Capital Group, a private equity and mezzanine capital firm based in London
• International Children's Games, an International Olympic Committee-sanctioned sport event held every year
• International Coal Group
• International College for Girls, former name of IIS University
• International Crisis Group, a non-profit organisation
• Internet Capital Group
• Inversive congruential generator
• Intra-character gap (or inter-character gap) in American Morse code
• Irish Continental Group, an Irish sea shipping firm
• Independent Comics Group, an imprint of Eclipse Comics
• International Committee on Global Navigation Satellite Systems (ICG) by United Nations Office for Outer Space Affairs
• International Composers' Guild
• International Cinematographers Guild
• Integrated clock gating, in logic chips