Io

Io or io may refer to:
*Io (mythology), daughter of Inachus in Greek mythology
*Io (moon), a moon of Jupiter
*Io Matua Kore, in some Māori traditions the supreme god
*85 Io, an asteroid
*Io (gastropod) a genus of freshwater snail in the family Pleuroceridae
*The Hawaiian Hawk's local name
*Io (voievodal title particle), a particle of a title used by Romanian royalty from Moldavia and Walachia
*Iwo Jima, a volcanic island in Japan

In modern fiction:
*Blind Io, the current king of the gods in Terry Pratchett's Discworld series of fantasy novels
*Io (Dungeons & Dragons), the chief deity worshipped by dragons in the Dungeons & Dragons role-playing game
*Io (Babylon 5), a space station in the science fiction television show Babylon 5

In technology:
*The IO.SYS file in DOS and Windows 95, 98 and ME.
*Io (programming language), a pure object-oriented programming language
*iO Digital Cable Service, a digital cable service offered by Cablevision
*Mitsubishi Pajero iO, a mini SUV produced by Mitsubishi Motors
*Input/Output, communication between information processing systems

ee also

* IO
* .io
* IiO
* ImprovOlympic