PVO may refer to:
- DaimlerChrysler's Performance Vehicle Operations, also known as Street and Racing Technology
- Private voluntary organization
- Protivo-Vozdushnaya Oborona - air defence forces, the Russian name for the Soviet Air Defence Forces branch of the Soviet and Russian military
- Pohjolan Voima Oy, the Finnish energy company
- Probabilistic velocity obstacle, a type of velocity obstacle
- Cryptographer Paul van Oorschot
- Australian political scientist Peter van Onselen
- IATA airport code PVO: Reales Tamarindos Airport - serving Portoviejo, the capital city of the province of Manabí in Ecuador.
- Pioneer Venus Orbiter