National park

Non-polarized denotation marked on electrolytic capacitors

Notary public

Nobel Prize

Nintendo Power, the official North American Nintendo magazine

Neptunium (chemical symbol Np)

North Philadelphia

NP (complexity), a computational complexity class

P-n junction, or NP junction instead, an electronic device used to make diodes and transistors.

Nurse practitioners

Nurse practitioner A registered nurse who has completed advanced nursing education

Newbury Park, California

Ngee Ann Polytechnic, Singapore

Network processor

Nonviolent Peaceforce

no problem and now playing in Internet slang

Neper, Np, a dimensionless unit

Nucleoside phosphorylase, an enzyme

Neyman-Pearson lemma, the NP lemma

Nepal (ISO 3166-1 alpha-2 country code)

New Process Gear, the name of the Syracuse, New York plant owned by New Venture Gear

National Post, a Toronto-based newspaper

Northern Pacific Railway (AAR reporting marks NP)

Noun phrase in grammar

NP, a book by Japanese author Banana Yoshimoto

Neopoints, the currency of online gaming website Neopets