| IAPT | Idaho Association for Pupil Transportation 
| Others |
| IAPT | Improving Access to Psychological Therapies
| Others |
| IAPT | Improving Access to Psychological Therapy
| Others |
| IAPT | Improving Access to Psychological Treatment
| Others |
| IAPT | Increasing Access to Psychological Therapies
| Others |
| IAPT | Indian Association of Physics Teachers
| Others |
| IAPT | International Academy of Practical Theology
| Others |
| IAPT | International Association for Plant Taxonomy
| Others |
| IAPT | International Association for the Philosophy of Time
| Others |
| IAPT | International Association of Public Transport
| Others |
| IAPT | Irish Association of Physical Therapists
| Others |