NI or Ni may refer to:

Arts and entertainment

* Ni, or Nishada, the seventh note of the Indian musical scale in

raga A ''raga'' or ''raag'' (; also ''raaga'' or ''ragam''; ) is a melodic framework for improvisation in Indian classical music akin to a melodic mode. The ''rāga'' is a unique and central feature of the classical Indian music tradition, and as a ...

* '' New Internationalist'', a magazine * Knights Who Say "Ni!", characters from the film ''Monty Python and the Holy Grail''

Businesses

National Instruments National Instruments Corporation, doing business as NI, is an American multinational company with international operation. Headquartered in Austin, Texas, it is a producer of automated test equipment and virtual instrumentation software. Co ...

, a U.S. producer of automated test equipment and virtual instrumentation software *

National Insurance National Insurance (NI) is a fundamental component of the welfare state in the United Kingdom. It acts as a form of social security, since payment of NI contributions establishes entitlement to certain state benefits for workers and their famil ...

, a system of taxes and related social security benefits in the United Kingdom *

Native Instruments Native Instruments is a German company that develops, manufactures, and supplies music software and hardware for music production, sound design, performance, and DJing. The company's corporate headquarters and main development facilities are lo ...

, a music software production company *

News International News Corp UK & Ireland Limited (trading as News UK, formerly News International and NI Group) is a British newspaper publisher, and a wholly owned subsidiary of the American mass media conglomerate News Corp. It is the current publisher of ...

, a British newspaper publisher * Portugália airline (IATA code NI)

Language

Ni (letter) Nu ( ell, νι ''ni'' ) is the 13th letter of the Greek alphabet (uppercase Ν, lowercase ν), representing the voiced alveolar nasal . In the system of Greek numerals it has a value of 50. It is derived from the ancient Phoenician language ...

, or Nu, a letter in the Greek alphabet: uppercase Ν, lowercase ν *

Ni (kana) に, in hiragana, or ニ in katakana, is one of the Japanese kana, which each represent one Mora (linguistics), mora. The hiragana is written in three strokes, while the katakana in two. Both represent although for Japanese phonology, phonologi ...

, romanisation of the Japanese kana に and ニ * Ni (cuneiform), a sign in cuneiform writing

Names

Ni (surname) Ni is the Mandarin pinyin and Wade–Giles romanization of the Chinese surname written in Chinese character. It is romanized Ngai in Cantonese. It is romanized as "Geh" in Malaysia and Singapore, and "Ge" in Indonesia, from its Minnan / Hokkian ...

(倪), a Chinese surname * Ní, a surname prefix from the shortened form of the Irish word for a daughter * Ni, female prefix to some Balinese names

Places

Ni River (New Caledonia) The Ni River is a river of New Caledonia. It has a catchment area of 173 square kilometres. See also *List of rivers of New Caledonia References

Rivers of New Caledonia {{NewCaledonia-river-stub ...

, a river of New Caledonia * Ni River (Virginia), a tributary of the Mattaponi River *

Mount Ni Mount Ni () is a hill about to the southeast of the city of Qufu in Shandong Province, China. The hill is culturally significant because it is traditionally regarded as the birthplace of Confucius. It is also the site of a historical temple dedi ...

, a hill in Shandong, China *

Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest Sovereign state, country in Central America, bordered by Honduras to the north, the Caribbean Sea, Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to ...

(ISO 3166 NI) **

.ni .ni is the Internet country code top-level domain (ccTLD) for Nicaragua. Second level domains Registrations are at the third level beneath several second level names. There are also a handful of sites directly at the second level, including the ...

, Nicaragua's internet domain *

Norfolk Island Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together w ...

, an external territory of Australia *

North Island The North Island, also officially named Te Ika-a-Māui, is one of the two main islands of New Zealand, separated from the larger but much less populous South Island by the Cook Strait. The island's area is , making it the world's 14th-larges ...

, one of the two main islands of New Zealand *

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label=Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. North ...

, a constituent country of the United Kingdom *

Lower Saxony Lower Saxony (german: Niedersachsen ; nds, Neddersassen; stq, Läichsaksen) is a German state (') in northwestern Germany. It is the second-largest state by land area, with , and fourth-largest in population (8 million in 2021) among the 16 ...

(German: ''Niedersachsen''; ISO 3166 code DE-NI), a state of Germany

Science and technology

Nickel Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow ...

, symbol Ni, a chemical element *

Ampere-turn The ampere-turn (A⋅t) is the MKS (metre–kilogram–second) unit of magnetomotive force (MMF), represented by a direct current of one ampere flowing in a single-turn loop in a vacuum. " Turns" refers to the winding number of an electrical co ...

s, sometimes abbreviated NI * Natural insemination i.e. sexual intercourse, in contrast to artificial insemination *

Nitrogen Triiodide Nitrogen triiodide is an inorganic compound with the formula N I3. It is an extremely sensitive contact explosive: small quantities explode with a loud, sharp snap when touched even lightly, releasing a purple cloud of iodine vapor; it can even ...

, a sensitive contact explosive *''Natural intelligence'', a term used to contrast intelligence found in nature, particularly in man, from

artificial intelligence Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machine A machine is a physical system using Power (physics), power to apply Force, forces and control Motion, moveme ...

Neonatal isoerythrolysis Neonatal isoerythrolysis (NI), also known as hemolytic icterus or hemolytic anemia, is a disease most commonly seen in kittens and foals, but has also been reported in puppies. It occurs when the mother has antibodies against the blood type of t ...

, a disease when the mother has antibodies against the blood type of the newborn

Other uses

* NI Tank, a Russian military vehicle *

N-I (rocket) The N-I or N-1 was a derivative of the American Thor-Delta rocket, produced under license in Japan. The N stood for "Nippon" (Japan). It used a Long Tank Thor first stage, a Mitsubishi Heavy Industries-designed LE-3 engine on the second stag ...

, a Japanese rocket based on the U.S. Delta/Thor family *

Nishan-e-Imtiaz The Nishan-e-Imtiaz (; ) is one of the state organized civil decorations of Pakistan. It is awarded for achievements towards world recognition for Pakistan or outstanding service for the country. However, the award is not limited to citizens ...

, a Pakistani civilian decoration *

Non-Inscrits Non-Inscrits (; abbreviated NI; also non-attached members, abbreviated NA) are Members of the European Parliament (MEP) who do not belong to one of the recognised political groups. These MEPs may be members of a national party, or of a Europ ...

(NI), members of the European Parliament not enrolled in any political group of the European Parliament * Introverted intuition, one of eight cognitive functions postulated by the

Myers–Briggs Type Indicator In Personality type, personality typology, the Myers–Briggs Type Indicator (MBTI) is an introspection, introspective self-report study, self-report questionnaire indicating differing Psychology, psychological preferences in how people perceiv ...