IPN may refer to:

Payments

Instant payment notification Instant payment notification (IPN) is a method for online retailers to automatically track purchases and other server-to-server communication in real time. This allows E-commerce systems the opportunity to store payment transactions, order inform ...

Chemistry

Interpenetrating polymer network An Interpenetrating polymer network (IPN) is a polymer comprising two or more networks which are at least partially interlaced on a polymer scale but not covalently bonded to each other. The network cannot be separated unless chemical bonds are bro ...

, form of chemical copolymer *

Isopropyl nitrate In organic chemistry, a propyl group is a three-carbon alkyl substituent with chemical formula for the linear form. This substituent form is obtained by removing one hydrogen atom attached to the terminal carbon of propane. A propyl substituent ...

, a liquid monopropellant

Industry

* IPN, a type of

I-beam An I-beam is any of various structural members with an - (serif capital letter 'I') or H-shaped cross section (geometry), cross-section. Technical terms for similar items include H-beam, I-profile, universal column (UC), w-beam (for "wide flang ...

used on European standards

Outer space

Interplanetary Internet The interplanetary Internet is a conceived computer network in space, consisting of a set of network nodes that can communicate with each other. These nodes are the planet's orbiters and landers, and the Earth ground stations. For exampl ...

InterPlaNet InterPlaNet (IPN), not to be confused with InterPlanetary Network, is a computer networking protocol designed to operate at interplanetary distances, where traditional protocols such as the Internet Protocol break down. It is the base for Inter ...

InterPlanetary Network The InterPlanetary Network (IPN) is a group of spacecraft equipped with gamma ray burst (GRB) detectors. By timing the arrival of a burst at several spacecraft, its precise location can be found. The precision for determining the direction of a G ...

, a group of spacecraft equipped with gamma-ray burst detectors

Medicine and anatomy

Infectious pancreatic necrosis Infectious pancreatic necrosis (IPN) is a severe viral disease of salmonid fish. It is caused by infectious pancreatic necrosis virus, which is a member of the Birnaviridae family. This disease mainly affects young salmonids such as trout or sa ...

, disease in fish *

Interpeduncular nucleus The interpeduncular nucleus (IPN) is an unpaired, ovoid group of neurons at the base of the midbrain tegmentum. In the midbrain it lies below the interpeduncular fossa. As the name suggests, the interpeduncular nucleus lies ''in between'' the cere ...

, a region of the brain

Other

Index of Place Names The Index of Place Names (IPN) in Great Britain is published by the Office for National Statistics. The IPN is a list of "places" in Great Britain. For each "place" included, the IPN lists which areas that place is located within, for each of a s ...

in Great Britain *

World Bank's Inspection Panel The Inspection Panel is an independent accountability mechanism of the World Bank. It was established in September 1993 by the World Bank Board of Directors, and started operations on August 1, 1994. The Panel provides a forum for people who bel ...

of the World Bank Group * ''Instytut Pamięci Narodowej'' (

Institute of National Remembrance The Institute of National Remembrance – Commission for the Prosecution of Crimes against the Polish Nation (, abbreviated IPN) is a Polish state research institute in charge of education and archives which also includes two public prosecutio ...

), a Polish historical research institute * ''

Instituto Pedro Nunes Instituto Pedro Nunes (IPN) is a non-profit private organization for innovation and technology transfer based in Coimbra, Portugal. It is named after the Portuguese 16th century mathematician and professor Pedro Nunes, who lived in the city of Co ...

'', technology transfer center of the University of Coimbra * ''

Instituto Politécnico Nacional The National Polytechnic Institute (), abbreviated IPN, is one of the largest public universities in Mexico with 171,581 students at the high school, undergraduate and postgraduate levels. It is the second-best university in Mexico in the techni ...

'' (National Polytechnic Institute), Mexican university *

International Policy Network The International Policy Network (IPN) was a neoliberal think tank based in the City of London, founded 1971, and closed in September 2011. The think tank said it was a non-partisan, non-profit organization, although critics argued that it was ...

(1971–2011), former British think tank * International Polio Network, former name of

Post-Polio Health International Post-Polio Health International (PHI) is a relatively new name for a non-profit organization that officially began its work in 1960. For many years it was known in medical, rehabilitation, and disability circles variously as GINI, or the Internation ...

* IPN, IATA code for Usiminas Airport in Minas Gerais, Brazil *

International pitch notation International is an adjective (also used as a noun) meaning "between nations". International may also refer to: Music Albums * ''International'' (Kevin Michael album), 2011 * ''International'' (New Order album), 2002 * ''International'' (The T ...

, a method to specify musical pitch {{disambig