What does IGG stand for?

Igana - Language code (ETLW)

Igiugig - Alaska - Airport symbol (OAG)

I Gotta Go - Chat lingo

Inert Gas Generator

Inhibit Gate Generator (SAUS)

Institut for Geography and Geoecology (SAUO)

Institutul de Geologie si Geofizica (GIS)

Internationale Gesellschaft fuer Geschichtsdidaktik - International Society for History Didactics (EAIO)

Italian Genealogy Group - Association (EA)

ill-gotten gains (SAUS)