| Acronym | Definition |
|---|
| GIS➣Geographic Information System |
| GIS➣Geographical Information System |
| GIS➣Geographic Information Services |
| GIS➣Geographical Information Science |
| GIS➣Global and International Studies (various schools) |
| GIS➣Gisborne, New Zealand (airport code) |
| GIS➣Guaranteed Income Supplement (Canada) |
| GIS➣Geographical Information Services |
| GIS➣Geographisches Informationssystem (German) |
| GIS➣GIAC (Global Information Assurance Certification) Information Security Professional |
| GIS➣Generation Information System (software) |
| GIS➣Gas-Insulated Switchgear |
| GIS➣General Information Services |
| GIS➣Geospatial Information System |
| GIS➣Genome Institute of Singapore |
| GIS➣Geografisch Informatie Systeem (Dutch: Geographic Information System) |
| GIS➣Geographic Information Science |
| GIS➣Geographics Information System |
| GIS➣Global Item Schema |
| GIS➣Global Information Services |
| GIS➣Google Image Search |
| GIS➣Groupement d'Intérêt Scientifique (French: Scientific Interest Group) |
| GIS➣Global Information Society |
| GIS➣Gentran Integration Suite (Sterling Commerce) |
| GIS➣Gas Insulated Substation (electrical networks) |
| GIS➣Global Information Solutions |
| GIS➣Geographic Information Solutions |
| GIS➣Geoscience Information Society |
| GIS➣Ghana International School |
| GIS➣Gussoh Imagesystem |
| GIS➣Global Infrastructure Services (Computer Sciences Corporation) |
| GIS➣Girls' Industrial School (various locations) |
| GIS➣Global Intelligence Services (various locations) |
| GIS➣Geodata Interoperability Specification |
| GIS➣Government Information System |
| GIS➣Grey Island Systems (Toronto, Canada) |
| GIS➣Generalized Iterative Scaling |
| GIS➣Garden International School (Malaysia) |
| GIS➣Geographic Information Studies |
| GIS➣Genossenschaftlicher Informations Service (German: Cooperative Information Service) |
| GIS➣Global Investment Systems |
| GIS➣Geographic Imaging Solutions |
| GIS➣Golisano Institute for Sustainability (Rochester Institute of Technology) |
| GIS➣General Information Session |
| GIS➣Gastrointestinal Series |
| GIS➣Group Information Session(s) |
| GIS➣Grundlagen Informatik Sensortechnik (German: Basic Computer Science Sensor Technology) |
| GIS➣Geophysical Information System |
| GIS➣Global Indexing System |
| GIS➣Graphics Information System |
| GIS➣Gruppo d' Intervento Speciale (Italian Carabinieri Army Special Forces) |
| GIS➣Georeferenced Information System |
| GIS➣Global Inbound Service (international toll free service) |
| GIS➣Global Integration Summit (Integration Consortium) |
| GIS➣Green Iguana Society |
| GIS➣Groupe Interventional Speciale (Italian Counter Terrorism Unit) |
| GIS➣Geographical Imaging Software |
| GIS➣Geeky Internal Stuff (databases) |
| GIS➣General Investigative Section (Canada RCMP) |
| GIS➣Gunbound International Server (gaming) |
| GIS➣Group Interference Suppression |
| GIS➣Gas Insulation System |
| GIS➣Geographical Intelligent Survey |
| GIS➣Global Insight Services (Congress WBN) |
| GIS➣Geosynchronous Meteorological Satellite |
| GIS➣Group Index and Schedule |
| GIS➣Greatness Is Simplicity |
| GIS➣Goddard Information System |
| GIS➣Guidelines Implementation Staff |