| Rank | Abbreviation | Meaning |
|---|
| ***** | ISDF | Integrated Service Delivery Framework
| |
| ***** | ISDF | International Space Defense Force
| |
| **** | ISDF | IP Summary-Description Format
| |
| **** | ISDF | International Standard for Describing Functions
| |
| **** | ISDF | Internet Societal Discussion Forum
| |
| **** | ISDF | International Still's Disease Foundation
| |
| **** | ISDF | Instituto Superior de Formación Docente
| |
| **** | ISDF | Internet Society Discussion Forum
| |
| **** | ISDF | Illegal Self Defense Force
| |
| **** | ISDF | Importance Sampling Density Function
| |
| **** | ISDF | Intercrystalline Structure Distribution Function
| |
| **** | ISDF | Interactive Standard Development Forums
| |
| **** | ISDF | International Dance Sport Federation
| |
| *** | ISDF | International Self–Denial Fund
| |
| *** | ISDF | International Shooter Development Fund
| |
| *** | ISDF | International Student Data Form
| |
| *** | ISDF | Intermediate Sodium Disposal Facility
| |
| *** | ISDF | International Sustainable Development Foundation
| |
| *** | ISDF | Information Security Digital Forensics
| |
| *** | ISDF | Institut de Sûreté de Fonctionnement
| |
| *** | ISDF | International School Development Foundation
| |
| *** | ISDF | Istrian Social Democratic Forum
| |
| *** | ISDF | Information Super Dance Floor
| |
| ** | ISDF | IPost Simple Data Format
| |
| ** | ISDF | Iroquois School District Foundation
| |