NP

NP may refer to:

Locations

• NP postcode area, Newport, United Kingdom
• NP, country code for Nepal (ISO 3166-1 alpha-2 country code)
  • .np, the country code top level domain (ccTLD) for Nepal
• NP, anabbreviation for Ngee Ann Polytechnic, Singapore
• N.P(The) an abbreviation for Nichols Point, Australia

Health, science, technology and mathematics

• 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
• Np, or Neper, a dimensionless unit
• N_p, Power number, a dimensionless number
• Np, the chemical symbol for Neptunium
• Nasopharyngeal airway, an adjunct to airway management
• NP lemma, or Neyman–Pearson lemma
• NP or Norma Portuguesa, a Portuguese technical standard
• Nucleoside phosphorylase, an enzyme
• NP junction or PN junction, the simplest electronic device, used to make diodes and transistors
• Number Portability, the ability to retain one's phone number when changing telecommunication carriers (in Europe)
• Nurse practitioner, a registered nurse who has completed advanced nursing education
• New Proposal (or new work item proposal), a stage in standardization process used by International Organization for Standardization

Language, literature, magazines, and games

• NP (novel), a book by Japanese author Banana Yoshimoto
• Noun phrase in grammar
• Nintendo Power, a magazine published by Future US in North America.

Transportation

• AAR reporting mark for the Northern Pacific Railway

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