On

On, on, or ON may refer to:

ON, the postnomial abbreviation used by members of the Jamaican Order of the Nation
ON, the postnomial abbreviation for Old Nottinghamian, a person who attended or worked at Nottingham High School
On, a transliteration of the Egyptian name of the city of Heliopolis
On, (Genesis 41:45), connected with "Potipherah, priest of On" (where On may refer to Heliopolis or an Egyptian deity)
ON Semiconductor, a leading supplier of power management solutions
Old Norse, a North Germanic language commonly referenced in etymology
Osteonectin, a glycoprotein
osteonecrosis
Overground Network, a railway scheme in South London
Nintendo On, a fake video game console

In popular music:

ON may also refer to:

Air Nauru, IATA airline designator ON
ITV Digital, a failed British digital television service originally named ONdigital
Leg side, in the game of cricket

See also