| Acronym | Definition |
|---|
| PIV | Personal Identity Verification (FIPS 201) |
| PIV | Pentium 4 |
| PIV | Particle Image Velocimetry |
| PIV | Parainfluenza Virus |
| PIV | Plena Ilustrita Vortaro (Esperanto: Full Illustrated Dictionary) |
| PIV | Personal Identification Verification |
| PIV | Project in Vision |
| PIV | Personal Identity Verification |
| PIV | Private Investment Vehicle (finance) |
| PIV | Peak Inverse Voltage |
| PIV | Peripheral IV |
| PIV | Phase IV (clinical studies) |
| PIV | Post Indicator Valve (firefighting) |
| PIV | Physical Inventory Verification |
| PIV | Powered Industrial Vehicle |
| PIV | Progestin Induced Virilization |
| PIV | Positively Infinitely Variable (type of gearbox) |
| PIV | Position Indicating Valve |
| PIV | positive input ventilation |
| PIV | Post Implementation Verification |
| PIV | Propellant Isolation Valve |
| PIV | Pre-Inventory Visit |
| PIV | Pontoon Implantment Vehicle |
| PIV | Product Improvement Verification |
| PIV | Pressure-Indicating Valve |