PIV
- Belize City street gang
- Glossary of firefighting equipment
- PIV (gang)
- Parainfluenza virus
- Particle image velocimetry
- Peak inverse voltage
- Penis in vagina
- Pentium 4
- Peripheral intravenous catheter
- Personal Identity Verification
- Plena Ilustrita Vortaro de Esperanto
- Posterior interventricular artery
- Vaeakau-Taumako language