ONP
ONP may refer to a physics technique for optical nuclear polarization, a federal park in Washington, a municipal airport in Oregon, a computing initiative called Open Next Program, or an academic online neuropsychology project.
Medical
Miscellaneous
Oficina de Normalización Previsional
Organizacion Nacional de Porristas
One Nation Party
Open Network Provision
Old Newspapers pulp
Governmental
Olympic National Park
Operational Network Protocol
Office of National Preparedness
Onafhankelijke Nijmeegse Partij
Office of Naval Procurement