| Abbreviation | Definition |
|---|---|
| PTO | Pacific Theater of Operations |
| PTO | Patent and Trademark Office |
| PTO | Personal Time Off |
| PTO | Preliminary Technical Order |
| PTOC | Part Time On Call |
| PTOL | Peace Time Operating Level |
| PTP | Preliminary Target Point |
| PTPE | Post-Test Performance Estimate |
| PTR | Problem Trouble Report |
| PTR | Progress Through the Ranks |
| PTRD | Public Traffic Road Distance |
| PTRD | Public Traffic Route Distance |
| PTRP | Physical Training and Rehabilitation Program |
| PTS | Permission To Speak |
| PTS | Peroxisomal Targeting Signal |
| PTS | Post Telephone Switch |
| PTS | Projectile Tracking System |
| PTS | Promote The Service |
| PTSD | Pissed Tired and Sick of Drills |
| PTSD | POST-TRAUMATIC STRESS DISORDER |