FPN
FPN may mean:
- Faculty of Political Science in Sarajevo (Bosnian: Script error: No such module "Lang".)
- Faculty of Political Sciences, University of Belgrade (Serbian: Script error: No such module "Lang".)
- Family nurse practitioner in the United States
- Feldpost number, used for transmission of mail to German military in WWII
- Feminist Peace Network in the United States
- Fixed penalty notice, in the UK, a notification of what is usually a minor fine for an alleged criminal offence
Science and technology
- Federated portal network, a software architecture
- Ferroportin, a protein
- Filtered-popping network in computer science
- Fixed-pattern noise in digital imaging