| Acronym | Definition |
|---|
| PIAA➣Pennsylvania Interscholastic Athletic Association |
| PIAA➣Physician Insurers Association of America |
| PIAA➣Printing Industries Association of Australia |
| PIAA➣Property Investors Association of Australia |
| PIAA➣Property Investment Association of Australia |
| PIAA➣Pet Industry Association of Australia Ltd. |
| PIAA➣Personal Injury Auto Accident |
| PIAA➣Private Investigator's Association of Arkansas, Inc. |
| PIAA➣Public Involvement and Aboriginal Affairs (Canada) |
| PIAA➣Push It All Aside (Alisha's Attic song) |
| PIAA➣Professional Insurance Agents of Arkansas, Inc. |