Ni

Ni, NI or N-I may refer to:

Arts and entertainment

 * Ni, or Nishada, the seventh note of the Indian musical scale in raga
 * New Internationalist, a magazine
 * Knights Who Say "Ni!", characters from the film Monty Python and the Holy Grail

Businesses

 * National Instruments, a U.S. producer of automated test equipment and virtual instrumentation software
 * National Insurance, a system of taxes and related social security benefits in the United Kingdom
 * Native Instruments, a music software production company
 * News International, a British newspaper publisher
 * Portugália airline (IATA code NI)

Language

 * Ni (letter), or Nu, a letter in the Greek alphabet: uppercase Ν, lowercase ν
 * Ni (kana), romanisation of the Japanese kana に and ニ
 * Ni (cuneiform), a sign in cuneiform writing

Names

 * Ni (surname) (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), a river of New Caledonia
 * Ni River (Virginia), a tributary of the Mattaponi River
 * Mount Ni, a hill in Shandong, China
 * Nicaragua (ISO 3166 NI)
 * .ni, Nicaragua's internet domain
 * Norfolk Island, an external territory of Australia
 * North Island, one of the two main islands of New Zealand
 * Northern Ireland, a constituent country of the United Kingdom
 * Lower Saxony (German: Niedersachsen; ISO 3166 code DE-NI), a state of Germany

Science and technology

 * Nickel, symbol Ni, a chemical element
 * Ampere-turns, sometimes abbreviated NI
 * Natural insemination i.e. sexual intercourse, in contrast to artificial insemination
 * Nitrogen Triiodide, a sensitive contact explosive
 * Natural intelligence, a term used to contrast intelligence found in nature, particularly in man, from artificial intelligence
 * Neonatal isoerythrolysis, 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), a Japanese rocket based on the U.S. Delta/Thor family
 * Nishan-e-Imtiaz, a Pakistani civilian decoration
 * Nishan-e-Iqbal, a decoration awarded by the Royal House of Rampur, India
 * Non-Inscrits (NI), members of the European Parliament not enrolled in any political group of the European Parliament
 * Nuevas Ideas (NI), a Salvadoran political party
 * Introverted intuition, one of eight cognitive functions postulated by the Myers–Briggs Type Indicator