| IASAP | Indian Alcohol and Substance Abuse Program 
| Others |
| IASAP | inert Atmospheric Solids Analysis Probe
| Others |
| IASAP | International Arctic Seas Assessment Project
| Others |
| IASAP | International Association for the Study of Attention and Performance
| Others |
| IASAP | International Association of Security
| Others |
| IASAP | Ipsos Affluent Survey Asia Pacific
| Others |