| Acronym | Definition |
|---|
| PRES | President |
| PRES | Present (abstention 'vote' or recorded show of presence, US Congress) |
| PRES | Atmospheric Pressure |
| PRES | Preserve |
| PRES | Prestin |
| PRES | Pressure (meteorology) |
| PRES | Posterior Reversible Encephalopathy Syndrome (hypertensive encephalopathy) |
| PRES | Primary Reserve (Canadian armed forces) |
| PRES | Pôle de Recherche et d'Enseignement Supérieur (French: Center for Research and Higher Education) |
| PRES | Pixel Resolution |
| PRES | Patent Retrieval Evaluation Score (informatics) |
| PRES | Program for the Retention of Engineering Students |
| PRES | Program Reporting & Evaluation System |