| Rank | Abbreviation | Meaning |
|---|
| ***** | IGSS | Indian Government Support System
| |
| **** | IGSS | Internet Gaming Software Solutions
| |
| **** | IGSS | Inspection Générale de la Sécurité Sociale
| |
| **** | IGSS | Interactive Graphical SCADA System
| |
| **** | IGSS | International Graduate School in Sociology
| |
| **** | IGSS | Interim Geographic Support System
| |
| **** | IGSS | immuno gold silver staining
| |
| **** | IGSS | International Graduate Student Scholarship
| |
| **** | IGSS | Instituto Guatemalteco de Seguridad Social
| |
| *** | IGSS | Integrated Global Studies School
| |
| *** | IGSS | Iowa Geological Survey Server
| |
| ** | IGSS | Illinois Ghost Seekers Society
| |
| ** | IGSS | in the Guatemalan Social Security Institute
| |
| ** | IGSS | intergenic spacers
| |
| ** | IGSS | Issue Group on Sustainable Shipping
| |
| * | IGSS | immunogold-silver staining technique
| |
| * | IGSS | International Graduate Summer School in Librarianship and. Information Science
| |
| * | IGSS | International Graduate Student Services
| |
| * | IGSS | Indo German Social Service
| |
| * | IGSS | immunogold silver staining method
| |
| * | IGSS | immunogold-silver staining sequence
| |
| * | IGSS | Intelligent Gateway Smart Switch
| |
| * | IGSS | IMAGE GLOBE SOLUTIONS, INC.
| |
| * | IGSS | Image Globe Solution (OTC Bulletin Board [OTCBB])
| |
| * | IGSS | immunogold-silver staining
| |