| ISDF | Independence School District Foundation 
| Others |
| ISDF | Indus Sustainable Development Foundation
| Others |
| ISDF | Informal Settlements Development Fund
| Others |
| ISDF | Information Security And Digital Forensics
| Others |
| ISDF | Integrated Strategic Development Framework
| Others |
| ISDF | International Self Defense Federation
| Others |
| ISDF | International Standard for Describing Functions
| Others |
| ISDF | International Street Dog Foundation
| Others |
| ISDF | International Student Data Form
| Others |
| ISDF | International Student Drama Festival
| Others |
| ISDF | International Students Disability Fund
| Others |
| ISDF | International Sustainable Development Foundation
| Others |
| ISDF | International Symposium on the Diabetic Foot
| Others |