Wikipedia
GSIS
GSIS may refer to:
- Government Service Insurance System, Philippines
- General Secretariat for Information Systems (Greece)
- Graduate School of International Studies, University of Denver in Denver, Colorado
- German Swiss International School, Hong Kong
- German Swiss International School in Accra, Ghana
- Geoscience Information Society (GSIS), United States
- Gyeonggi Suwon International School, Korea