On, on, or ON may refer to:

Arts and entertainment

Music

On (band) ON was a solo project of Ken Andrews, which he started after the breakup of his previous band, Failure. The music of ON was not unlike that of Failure in terms of songwriting, but the overall sound was more based on electronics, with less empha ...

, a solo project of Ken Andrews * ''On'' (EP), a 1993 EP by Aphex Twin * ''On'' (Echobelly album), 1995 * ''On'' (Gary Glitter album), 2001 * ''On'' (Imperial Teen album), 2002 * ''On'' (Elisa album), 2006 * ''On'' (Jean album), 2006 * ''On'' (Boom Boom Satellites album), 2006 * ''On'' (Tau album), 2017 * "On" (song), a 2020 song by BTS * "On", a song by Bloc Party from the 2006 album '' A Weekend in the City''

Other media

* '' Ön'', a 1966 Swedish film * On (Japanese prosody), the counting of sound units in Japanese poetry * ''On'' (novel), by Adam Roberts *

ONdigital ITV Digital was a British digital terrestrial television Broadcasting, broadcaster which launched a pay-TV service on the world's first digital terrestrial television network. Its main shareholders were Carlton Communications plc and Granada ...

, a failed British digital television service, later called ITV Digital * Overmyer Network, a former US television network

Places

On (Ancient Egypt) Heliopolis (I͗wnw, Iunu or 𓉺𓏌𓊖; egy, I͗wnw, 'the Pillars'; cop, ⲱⲛ; gr, Ἡλιούπολις, Hēlioúpοlis, City of the Sun) was a major city of ancient Egypt. It was the capital of the 13th or Heliopolite Nome of Lower Eg ...

, a Hebrew form of the ancient Egyptian name of Heliopolis * On, Wallonia, a district of the municipality of

Marche-en-Famenne Marche-en-Famenne (, literally ''Marche in Famenne''; wa, Måtche-el-Fåmene, ) is a city and municipality of Wallonia located in the Belgian province of Luxembourg. The municipality consists of the following districts: Aye, Hargimont, Hum ...

Ahn, Luxembourg Ahn (Luxembourgish: ''Ohn'') is a wine-growing village in the municipality of Wormeldange in the district and canton of Grevenmacher in the southwestern side of the Grand Duchy of Luxembourg. In 2005, the population is 208. The bottom part of ...

, known in Luxembourgish as ''On'' *

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

, a Canadian province

Science, technology, and mathematics

Biology and medicine

Operative note An Operative report is a report written in a patient's medical record to document the details of a surgery. The operative report is dictated right after a surgical procedure and later transcribed into the patient's record. The information in the ope ...

, documentation of care relating to an operation *

Optic neuritis Optic neuritis describes any condition that causes inflammation of the optic nerve; it may be associated with demyelinating diseases, or infectious or inflammatory processes. It is also known as optic papillitis (when the head of the optic nerv ...

, especially relevant in multiple sclerosis *

Osteonecrosis Avascular necrosis (AVN), also called osteonecrosis or bone infarction, is death of bone tissue due to interruption of the blood supply. Early on, there may be no symptoms. Gradually joint pain may develop which may limit the ability to move. Co ...

, death of bone tissue *

Osteonectin Osteonectin (ON) also known as secreted protein acidic and rich in cysteine (SPARC) or basement-membrane protein 40 (BM-40) is a protein that in humans is encoded by the ''SPARC'' gene. Osteonectin is a glycoprotein in the bone that binds calciu ...

, a glycoprotein

Other uses in science, technology, and mathematics

ON Semiconductor onsemi (stylized in lowercase; legally ON Semiconductor Corporation; formerly ON Semiconductor until August 5, 2021) is an American semiconductor supplier company, based in Phoenix, Arizona and ranked #483 on the 2022 ''Fortune'' 500 based on it ...

, a semiconductor manufacturing company *

O'Nan group In the area of abstract algebra known as group theory, the O'Nan group ''O'N'' or O'Nan–Sims group is a sporadic simple group of order : 2934573111931 : = 460815505920 : ≈ 5. History ''O'Nan'' is one of the 26 sporadic group ...

, a mathematical group * OS/Net, the OpenSolaris Community * On, the proper class of all

ordinal numbers In set theory, an ordinal number, or ordinal, is a generalization of ordinal numerals (first, second, th, etc.) aimed to extend enumeration to infinite sets. A finite set can be enumerated by successively labeling each element with the least ...

Other uses

On (biblical figure) On, on, or ON may refer to: Arts and entertainment Music * On (band), a solo project of Ken Andrews * ''On'' (EP), a 1993 EP by Aphex Twin * ''On'' (Echobelly album), 1995 * ''On'' (Gary Glitter album), 2001 * ''On'' (Imperial Teen album), 200 ...

, son of Peleth *

On (company) On, sometimes referred to as On Running is an athletic shoe and performance sportswear company originating in Switzerland that designs and markets sports clothing and running shoes. As of 2019 the company held 40% of the running shoe market in S ...

, a Swiss athletic shoe and sportswear company *

On Kawara was a Japanese conceptual artist who lived in New York City from 1965. He took part in many solo and group exhibitions, including the Venice Biennale in 1976. Early life Kawara was born in Kariya, Japan on December 24, 1932. After graduating fro ...

, Japanese artist *

Nauru Airlines Nauru Air Corporation, trading as Nauru Airlines (formerly trading as Our Airline and Air Nauru), is the flag carrier airline of the Republic of Nauru. It operates scheduled international services to other Pacific islands and Australia. Its main ...

(IATA airline designator ON) *

Leg side The leg side, or on side, is defined to be a particular half of the field used to play the sport of cricket. It is the side of the field that corresponds to the batsman's non-dominant hand, from their perspective. From the point of view of a righ ...

, in the game of cricket *

Old Norse Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and their overseas settlemen ...

, a North Germanic language commonly referenced in etymology *

Ontology In metaphysics, ontology is the philosophical study of being, as well as related concepts such as existence, becoming, and reality. Ontology addresses questions like how entities are grouped into categories and which of these entities exi ...

, a branch of philosophy that deals with the concept of being *

On'yomi are the logographic Chinese characters taken from the Chinese script and used in the writing of Japanese. They were made a major part of the Japanese writing system during the time of Old Japanese and are still used, along with the subsequ ...

, reading of Japanese kanji characters *

Order of the Nation The Order of the Nation is a Jamaican honour. It is a part of the Jamaican honours system and was instituted in 1973 as the second-highest honour in the country, with the Order of National Hero being the highest honour. The Order of the Nation ...

, a Jamaican honour *

Overground Network Overground Network (abbreviated on or ON) was a branding initiative launched in 2003 by the Strategic Rail Authority (SRA) and Transport for London (TfL), the public transport authority in London, England. Its aim was to encourage use of Nat ...

, a railway scheme in South London *

ON convoys The ON convoys were a series of North Atlantic trade convoys running Outbound from the British Isles to North America during the Battle of the Atlantic. History From 7 September 1939, shortly after the outbreak of World War II, OB convoys saile ...

, a series of WWII trade convoys *

Orka náttúrunnar ON Power ( Icelandic: Orka náttúrunnar), is an Icelandic power company, headquartered in Reykjavík, that produces and sells electricity to industry and households by harnessing renewable, mainly geothermal, resources. ON Power also provides w ...

(ON Power), Icelandic geothermal power company