NPO may refer to:
Medicine
* ''
Nil per os
Nothing by mouth is an American medical instruction meaning to withhold food and fluids. It is also known as nil per os (npo or NPO), a Latin phrase that translates to English as "nothing through the mouth". Nil by mouth is the term used in the UK ...
'', Latin for "nothing by mouth", a medical instruction to withhold oral intake of food and fluids
* neurogenic
pulmonary oedema
Science
*
North Pacific Oscillation, a teleconnection pattern in atmospheric conditions over the North Pacific
* NP
optimization problem
In mathematics, engineering, computer science and economics
Economics () is a behavioral science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goo ...
, an optimization problem that is NP-hard
* NPO, characterizing thermal stability of a
capacitor
In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. The capacitor was originally known as the condenser, a term st ...
* The
NPO complexity class
In computational complexity theory, a complexity class is a set (mathematics), set of computational problems "of related resource-based computational complexity, complexity". The two most commonly analyzed resources are time complexity, time and s ...
, standing for "NP-optimization problem", in
computational complexity
In computer science, the computational complexity or simply complexity of an algorithm is the amount of resources required to run it. Particular focus is given to computation time (generally measured by the number of needed elementary operations ...
Organisations
*
Nonprofit organization
A nonprofit organization (NPO), also known as a nonbusiness entity, nonprofit institution, not-for-profit organization, or simply a nonprofit, is a non-governmental (private) legal entity organized and operated for a collective, public, or so ...
*
National Portfolio Organisation, a UK-based culture and arts organisation receiving substantial funding from Arts Council England
* National Ports Organisation, former part of the UK
Department for Transport
The Department for Transport (DfT) is a Departments of the Government of the United Kingdom, ministerial department of the Government of the United Kingdom. It is responsible for the English transport network and a limited number of transport ...
*
National Preservation Office, part of the British Library
*
Scientific Production Association (''Nauchno-Proizvodstvennoye Obyedineniye''), a form of scientific research-to-production facility in the Soviet Union and the Russian Federation.
*
Nederlandse Publieke Omroep (organization) ("Netherlands Public Broadcasting"), governing body of the Netherlands (Dutch) Public Broadcasting System
* ''Nederlands Publieke Omroepbestel'' ("
Dutch public broadcasting system
The Dutch public broadcasting system () is a group of organizations that are responsible for public service television and radio broadcasting in the Netherlands. It is composed of the Nederlandse Publieke Omroep (NPO) foundation, which acts as its ...
"), the public broadcasting service in the Netherlands
* Netherlands Pathfinder Organisation (''Nederlandse Padvinders Organisatie''), one of the organisations that evolved into
Scouting Nederland, the national Scouting organisation
* NPO UK Ltd., a chain of stationery and book shops in Northern Ireland, now part of
Eason & Son
*
National Printing Office, one of the three recognized government printers of the Philippines
Other
*
Nanga Pinoh Airport, by IATA code
*
Pochuri language, by ISO 639 code
{{disambiguation