| Abbreviation | Definition |
|---|---|
| RPI | Raspberry PI I |
| RPI | Ratings Percentage Index |
| RPI | Real Property Information |
| RPI | Really Poor Index |
| RPI | Reciprocal Ponderal Index |
| RPI | Recognition Professionals International |
| RPI | Recruiting Publicity Item |
| RPI | Recursive Program Interface |
| RPI | Registered Provisional Immigrant |
| RPI | Render Performance Index |
| RPI | Retail Prices Index |
| RPI | Reticulocyte Production Index |
| RPI | Roofing Products International |
| RPIA | Recursive polynomial interpolation algorithm |
| RPIC | Renewable Power the Intelligent Choice |
| RPID | Reservoir Powder Inhalation Device |
| RPID | Rural Payment and Inspections Directorate |
| RPID | Rural Payments and Inspections Division |
| RPIE | Real Property Income and Expense |
| RPIE | Real Property Installed Equipment |