Gas Industry Standard
Gas Insulated System
Gated Isolated Structure
Geological Information System
Geopgrahic Information Systems
Geophysical Incentive System
Global Investor Services
Grant Information System
Grazing Incidence Spectrograph
Geografické informacní systémy
Geographische Insormations-Systeme
Global Information Security
Graduate Internship Scheme
Grup d'Independents pel Socialisme
Grupo de Instrução e Sport