ISSG
| Acronym | Definition |
|---|---|
| ISSG | Invasive Species Specialist Group (IUCN) |
| ISSG | International Syria Support Group (est. 2005) |
| ISSG | Information Systems Services Group (Chesterfield, MO) |
| ISSG | In-Situ Steam Generation |
| ISSG | Information Strategy Steering Group |
| ISSG | Institutional Self-Study Guide (National Collegiate Athletic Association) |
| ISSG | Internet Services Study Group |
| ISSG | Illustrated Shipboard Shopping Guide |
| ISSG | Intelligence Support Steering Group |