On

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

https://en.wikipedia.org/wiki/On