PNS may refer to:
Medicine
- Peripheral nervous system
- Peripheral nerve stimulation of the occipital nerves
- Paraneoplastic syndrome
- Pilonidal sinus
- Posterior nasal spine, a cephalometric landmark
Transport
- Pensacola International Airport, IATA airport code
- Pensacola station (Amtrak), Amtrak station code
Technology
- Process network synthesis, a process engineering tool
Military
- Portsmouth Naval Shipyard, United States
- Pakistan Navy Ship
Science
- Post-normal science, approach to making policy with uncertain information
Other
- Pakistan Nuclear Society
- Program on Nonviolent Sanctions, at the Center for International Affairs at Harvard University, Cambridge, Massachusetts
- Public News Service, an American news media company
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