On, on, or ON may refer to:

  • On (Japanese prosody), the counting of sound units in Japanese poetry
  • Ön, a 1966 Swedish film
  • On (novel), by Adam Roberts
  • Air Nauru IATA airline designator ON
  • On in Ancient Egypt, a Hebrew form of the ancient Egyptian name of Heliopolis
  • ITV Digital, a failed British digital television service originally named ONdigital
  • Leg side, in the game of cricket
  • Old Norse, a North Germanic language commonly referenced in etymology
  • ON Semiconductor, a semiconductor manufacturing company
  • O'Nan group, a mathematical group
  • Ontario, Canada
  • Ontology, a branch of philosophy that deals with the concept of being
  • On'yomi, reading of Japanese kanji characters
  • Osteonectin, a glycoprotein
  • Osteonecrosis
  • Order of the Nation, a Jamaican honour
  • Overground Network, a railway scheme in South London
  • Overmyer Network, an ill-fated US television network
  • OS/Net, the OpenSolaris Community
  • Optic neuritis, especially relevant in multiple sclerosis
  • On, the son of Pelath, participant in an Israelite rebellion against the leadership of Moses


"You can't give up hope just because it is hopeless! You gotta hope even more, and cover your ears, and go: "Blah blah blah blah blah blah blah blah!""
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