| Abbreviation | Definition |
|---|---|
| IAHP | Indian Academy of Health Psychology |
| IAHP | International Association of Holistic Psychology |
| IAIP | International Academy of Investigative Psychology |
| IAIP | International Association of Individual Psychology |
| IAPR | International Association for the Psychology of Religion |
| IAPT | Improving Access to Psychological Therapies |
| IAPT | Improving Access to Psychological Therapy |
| IAPT | Improving Access to Psychological Treatment |
| IAPT | Increasing Access to Psychological Therapies |
| IBI | Intensive Behavioural Intervention |
| IBPP | International Bulletin Of Political Psychology |
| IC | Identity Crisis |
| IC | Individual Counselling |
| ICE | Intensity, Conflict, and Emotion |
| ICEP | Institute of Child Education and Psychology |
| ICEP | International Conference of Environmental Psychology |
| ICHPA | Instituto Chileno de Psicoterapia Analítica |
| ICRC | Inquiries, Complaints and Reports Committee |
| ICSR | International Congress on Schizophrenia Research |
| IDDP | Institute for Didactic Development and Psychology |