NP

NP may refer to:

Arts and entertainment

• NP (novel), by Japanese author Banana Yoshimoto

Organizations

• Nashua-Plainfield Community School District, Iowa, United States
• National Party (disambiguation), various political parties
• Ngee Ann Polytechnic, Singapore
• Nigeria Police Force
• Northern Pacific Railway (AAR reporting mark NP)
• November Project, free, open-to-the-public exercise group

Places

• NP postcode area, Newport, Wales, UK
• Nepal (ISO 3166-1 alpha-2 country code NP)
  • .np, the country code top level domain (ccTLD) for Nepal

Science, technology and mathematics

Biology and medicine

• Nucleoside phosphorylase, an enzyme
• Nurse practitioner
• Kallikrein 8, an enzyme
• Neptunium, symbol Np, a chemical element
• Nosocomial pneumonia
• Natriuretic peptide

Mathematics and computer science

• NP (complexity), Nondeterministic Polynomial, a computational complexity class
  • NP-complete, a class of decision problems
  • NP-hard, a class of problems in computational complexity
  • Co-NP, a complexity class
• Numpy a Python mathematical library
• Named Pipe a method for Inter-Process Communications (IPC)

Physics and chemistry

• NP junction or PN junction in a semiconductor device
• Neopentane, the simplest double-branched-chain alkane
• Neper (Np), a logarithmic unit for ratios
• Neptunium, a chemical element with symbol Np
• Power number (N_p), relating resistance force to inertia force
• Phosphorus nitride

Other uses in science and technology

• New Proposal, in the International Organization for Standardization (ISO) standardization process
• Not placed, a term used in printed circuit board design to denote the omitting of a component
• Nanoparticle
• Noun phrase, in grammar

Other uses

• No problem
• Notary public, post-nominal

See also

• All pages with titles containing NP or NPs
• All pages with titles beginning with NP
• Enpi (disambiguation)
• NPS (disambiguation)
• PN (disambiguation)
• N (disambiguation)
• P (disambiguation)