| Acronym | Definition |
|---|
| IISS➣International Institute for Strategic Studies (London, UK) |
| IISS➣Institute of International and Social Studies |
| IISS➣Indian Institute of Soil Science (Bhopal, India) |
| IISS➣India International Sign Show |
| IISS➣Istituto Italiano di Sessuologia Scientifica |
| IISS➣Integral Input-To-State Stability |
| IISS➣Interactive Image Spreadsheet |
| IISS➣International Institute for the Science of Sintering |
| IISS➣Istituto d'Istruzione Secondaria Superiore (Italian) |
| IISS➣Integrated Information Support System |
| IISS➣Instructional and Information Support Services |
| IISS➣Internationella Institutet för Strategiska Studier (Swedish) |
| IISS➣Inter-Ivy Sociology Symposium |
| IISS➣Inter-Island Solar Supply |
| IISS➣Intelligence Information Sharing Standards |
| IISS➣Integration Information Support System |
| IISS➣Institute on Inequality and Social Structure |
| IISS➣India International Seafood Fair |
| IISS➣International Innovative Simulation Solutions |
| IISS➣Intellectual Integrated Service and System |
| IISS➣Identification & Investigative Services Section |
| IISS➣Indian Incomes and Savings Survey |
| IISS➣Internet Interactive Scheduling System |
| IISS➣Interoperable Imagery Surface System |
| IISS➣Interactive and Intuitive Specification System |