| PGAA | Paulo G Alcazaren and Associates 
| Others |
| PGAA | Perforator Grinder Aspirator Apparatus
| Others |
| PGAA | Pet Gaurdian Angels of America
| Others |
| PGAA | Pet Guardian Angels of America
| Others |
| PGAA | Philippine Gymnastics and Athletics Academy
| Others |
| PGAA | Philippines Gymnastics Athletics Academy
| Others |
| PGAA | Pitt Greensburg Alumni Association
| Others |
| PGAA | Pittsburgh Gaelic Athletic Association
| Others |
| PGAA | Prince George Airport Authority
| Others |
| PGAA | Professional Gardener Alumni Association
| Others |
| PGAA | Prompt Gamma Activation Analyses
| Others |
| PGAA | Prompt Gamma Activation Analysis
| Others |
| PGAA | Provincial Glaziers Association of Alberta
| Others |