| IASP | Independent Auxiliary Storage Pool 
| Others |
| IASP | Indiana Association of School Principals
| Others |
| IASP | Indiana Association of School Psychologists
| Others |
| IASP | Information Assurance Scholarship Program
| Others |
| IASP | Institute on Assets and Social Policy
| Others |
| IASP | Integrated Aviation Systems Program
| Others |
| IASP | International Association for Suicide Prevention
| Others |
| IASP | International Association for the Study of Pain
| Others |
| IASP | International Association of Safety Professionals
| Others |
| IASP | International Association of Science Parks
| Others |
| IASP | Internet Access Service Provider
| Others |
| IASP | Internet Application Server Portal
| Others |