| 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) |