| Acronym | Definition |
|---|
| PIAC➣Public Interest Advocacy Centre (Canada) |
| PIAC➣Pension Investment Association of Canada |
| PIAC➣Permanent International Altaistic Conference |
| PIAC➣Project for Information Access and Connectivity (est. 1997) |
| PIAC➣Printing Industry Advisory Committee (United Kingdom) |
| PIAC➣Pakistan International Airlines Corporation |