NP
- .np
- Co-NP
- Enpi (disambiguation)
- International Organization for Standardization
- Kallikrein 8
- N (disambiguation)
- NP (complexity)
- NP (novel)
- NP postcode area
- NP-complete
- NP-hard
- NPS (disambiguation)
- Nacionalista Party
- Named Pipe
- Nanoparticle
- Nashua-Plainfield Community School District
- National Party (disambiguation)
- Natriuretic peptide
- Neopentane
- Nepal
- Neper
- Neptunium
- Ngee Ann Polytechnic
- Nigeria Police Force
- No problem
- Northern Pacific Railway
- Nosocomial pneumonia
- Not placed
- Notary public
- Noun phrase
- November Project
- Nucleoside phosphorylase
- Numpy
- Nurse practitioner
- P (disambiguation)
- PN (disambiguation)
- Phosphorus nitride
- Power number