| PTPA | Pacific Tractor Puller's Association 
| Others |
| PTPA | Pacific Tractor Pullers Association
| Others |
| PTPA | Palmer Trinity Parents Association
| Others |
| PTPA | Panhandle Team Penning and Sorting Association
| Others |
| PTPA | Panhandle Team Penning Association
| Others |
| PTPA | Parent Tested Parent Approved
| Others |
| PTPA | Parent Tested Parent Approvied
| Others |
| PTPA | Parents Tested Parent Approved
| Others |
| PTPA | Parish Twinning Program of the Americas
| Others |
| PTPA | Parish Twinnings Programs of the Americas
| Others |
| PTPA | Park Tudor Parents Association
| Others |
| PTPA | Peninsula Tennis Patrons Association
| Others |
| PTPA | Pennsylvania Theatre of Performing Arts
| Others |
| PTPA | Performance Track Participants Association
| Others |
| PTPA | Permission To Post Admin
| Others |
| PTPA | Peru Trade Promotion Agreement
| Others |
| PTPA | Piano Talent Performance Academy
| Others |
| PTPA | Portal To Portal Act
| Others |
| PTPA | Probe To Pad Alignment
| Others |
| PTPA | Professional Tennis Players Association
| Others |
| PTPA | Protein Tyrosine Phosphatase Alpha
| Others |
| PTPA | Public Television Programmers Association
| Others |
| PTPA | Public Television Programming Association
| Others |