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 Pulmonary edema (British English: oedema), also known as pulmonary congestion, is excessive fluid accumulation in the tissue or air spaces (usually alveoli) of the lungs. This leads to impaired gas exchange, most often leading to shortness ...

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 Arts Council England is an arm's length non-departmental public body of the Department for Culture, Media and Sport. It is also a registered charity. It was formed in 1994 when the Arts Council of Great Britain was divided into three separate b ...

, 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 The British Library Preservation Advisory Centre was established as the National Preservation Office by the British Library Board in 1984, and was renamed to the British Library Preservation Advisory Centre in 2009. During its existence it rais ...

, 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) (; abbreviated to NPO ; literally "Dutch Public Broadcaster") or Dutch Foundation for Public Broadcasting () is a Dutch public broadcasting organisation that administers Dutch public broadcasting system, public broadcasting services in the Neth ...

("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 Scouting Nederland is the national Scouting, Scout organisation of the Netherlands with approximately 110,000 members (53,324 male and 54,663 female, 87,000 youth members, as of 2010. The official patron of Scouting Nederland is Queen Máxima of ...

, the national Scouting organisation * NPO UK Ltd., a chain of stationery and book shops in Northern Ireland, now part of

Eason & Son Eason Retail PLC, known as Easons or Eason, is an Irish retail company best known for selling books, stationery, cards, gifts, newspapers and magazines. Headquartered in Swords, County Dublin, it is the largest supplier of books, magazines, and ...

National Printing Office National Printing Office (NPO) is one of 3 Recognized Government Printers in the Philippines (together with Bangko Sentral ng Pilipinas and the Apo Production Unit). It was first established in 1901 as the Philippine Bureau of Printing. It is ...

, one of the three recognized government printers of the Philippines

Other

* Nanga Pinoh Airport, by IATA code *

Pochuri language Pochuri, or Pochuri Naga, is a Naga language spoken in Nagaland, India. According to ''Ethnologue'', Pochuri is spoken in 27 villages of Meluri subdivision, Phek district, southeastern Nagaland. There are also some speakers in Ukhrul distric ...

, by ISO 639 code {{disambiguation