| Acronym | Definition |
|---|
| PETRA | Jordan News Agency |
| PETRA | Photonics Electronics Technology Research Association (est. 2009) |
| PETRA | Pan European Transport Area (long-distance transport corridors concept) |
| PETRA | Parameter Estimation for the Treatment of Reactivity Applications |
| PETRA | Planning, Evaluation, Training, Rehearsal and Analysis |
| PETRA | Performance Enhancing Transport Architecture (satellite communications) |
| PETRA | Positron-Elektron-Tandem-Ringanlage (Positron Electron Tandem Ring Accelerator) |
| PETRA | Product Event Tracking Reporting and Analysis (process manufacturing industry) |
| PETRA | Pre-Exit Telemetry Retransmission and Amplification (system for vertical launching systems) |