| Acronym | Definition |
|---|
| ISSP | International Social Survey Programme |
| ISSP | International Society of Sport Psychology |
| ISSP | International Conference on Intelligent Systems and Signal Processing |
| ISSP | Institute for Solid State Physics (University of Tokyo) |
| ISSP | Intensive Supervision and Surveillance Programme (UK) |
| ISSP | Information Systems Strategic Plan |
| ISSP | India Statistical Strengthening Project |
| ISSP | In-School Suspension |
| ISSP | Inter-Solar System Police (anime) |
| ISSP | International Space Station Program |
| ISSP | Impact Sourcing Service Provider (various orgnizations) |
| ISSP | Information Systems Security Professional |
| ISSP | International School of Subnuclear Physics (Italy) |
| ISSP | International Seminar on Speech Production |
| ISSP | International Society of Sustainability Professionals (Portland, OR) |
| ISSP | Integrated Soldier System Project (Canada) |
| ISSP | Information System Security Program |
| ISSP | Internet Security Suite Plus (antivirus software) |
| ISSP | Intensive Support and Supervision Program (Canada) |
| ISSP | Integrated Single Specialty Provider (health care) |
| ISSP | System-Specific Impulse |
| ISSP | Interim Interswitch Signaling Protocol |
| ISSP | Issue-Specific Security Policy |
| ISSP | Instructional Support System of Pennsylvania |
| ISSP | Individual Service and Support Plan (behavioral science) |
| ISSP | Inter Solar Systems Pol |
| ISSP | Indian Society for Study of Pain (Gujarat, India) |
| ISSP | Interservice Supply Support Procedure/Program |
| ISSP | Individualized Student Success Plan |
| ISSP | International Society for the Study of Pain |