PIAI
| Acronym | Definition |
|---|---|
| PIAI | Provincetown International Art Institute (Provincetown, MA) |
| PIAI | Primary Immunodeficiency Association of Ireland (Ashbourne, Ireland) |
| PIAI | Pan IIT (Indian Institutes of Technology) Alumni India |
| PIAI | Postoperative Intra-Abdominal Infection (surgery) |
| PIAI | Personal Injury Accident Investigator |
| PIAI | Protected Insertive Anal Intercourse (sexual behavior) |