| Acronym | Definition |
|---|
| PTAI➣Perguruan Tinggi Agama Islam (Indonesian: Islamic Higher Education) |
| PTAI➣Phillip Townsend Associates, Inc. (Houston, TX) |
| PTAI➣Primary Training Aircraft Inventory |
| PTAI➣Part-Time Assistant Instructor |
| PTAI➣Percentual Total Activity Index (cardiovascular medicine) |