| Rank | Abbreviation | Meaning |
|---|
| ***** | PETS | Performance Evaluation and Tracking System
| |
| ***** | PETS | Prior to Expiration of Term of Service
| |
| **** | PETS | P/L Experiment Test System (KSC)
| |
| ** | PETS | Property and Evidence Tracking System
| |
| ** | PETS | Pet Evacuation and Transportation Standards Act
| |
| * | PETS | Payload Environmental Transportation System
| |
| * | PETS | Payload Environmental Transporation System
| |
| * | PETS | Personnel Evacuation Tracking System
| |
| * | PETS | Proposed Endangered Threatened or Sensitive
| |
| * | PETS | Police Exhibit Tracking Software
| |
| * | PETS | POCC Experiments Timeline System (GDSD And Spacelab
| |