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), 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 ''A Weekend in the City'' is the second studio album by British indie rock band Bloc Party. It was recorded at Grouse Lodge Studios in Westmeath, Ireland, in mid-2006 and was produced by Jacknife Lee. The album was refined and mixed at severa ...

Other media

* ''

Ön ''Ön'' ( en, The Island) is a 1966 Swedish drama film directed by Alf Sjöberg. At the 3rd Guldbagge Awards Sjöberg won the award for Best Director. The film was also entered into the 1966 Cannes Film Festival. Cast * Per Myrberg as Count Mag ...

'', a 1966 Swedish film *

On (Japanese prosody) ''On'' (音; rarely ''onji'') are the phonetic units in Japanese language, Japanese poetry. In the Japanese language, the word means "sound". It includes the phonetic units counted in haiku, tanka, and waka (poetry), other such poetic forms. Known ...

, the counting of sound units in Japanese poetry * ''On'' (novel), by Adam Roberts *

ONdigital ITV Digital was a British digital terrestrial television 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 plc, owners o ...

, a failed British digital television service, later called ITV Digital *

Overmyer Network The Overmyer Network, later the United Network, was a television network. It was intended to be a fourth television network, fourth national commercial network in the United States, competing with the Big Three television networks. The network ...

, a former US television network

Places

* On (Ancient Egypt), a Hebrew form of the ancient Egyptian name of Heliopolis * On, Wallonia, a district of the municipality of Marche-en-Famenne * Ahn, Luxembourg, 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 Ca ...

, a Canadian province

Science, technology, and mathematics

Biology and medicine

* Operative note, documentation of care relating to an operation * Optic neuritis, especially relevant in multiple sclerosis * Osteonecrosis, death of bone tissue * Osteonectin, a glycoprotein

Other uses in science, technology, and mathematics

* ON Semiconductor, a semiconductor manufacturing company * O'Nan group, a mathematical group * OS/Net, the

OpenSolaris OpenSolaris () is a discontinued open-source computer operating system based on Solaris and created by Sun Microsystems. It was also, perhaps confusingly, the name of a project initiated by Sun to build a developer and user community around th ...

Community * On, the

proper class Proper may refer to: Mathematics * Proper map, in topology, a property of continuous function between topological spaces, if inverse images of compact subsets are compact * Proper morphism, in algebraic geometry, an analogue of a proper map for ...

of all ordinal numbers

Other uses

* On (biblical figure), son of Peleth * On (company), a Swiss athletic shoe and sportswear company * On Kawara, 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, in the game of cricket *

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

, 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 exis ...

, 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 subsequent ...

, 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 Nati ...

, 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