IOI

IOI may refer to:

Arts and entertainment

• Interonset interval, in music
• I.O.I, a South Korean girl group formed from the television show Produce 101
• Innovative Online Industries (IOI), a fictional corporation in the 2011 novel Ready Player One
• Ready Player One (film), the 2018 film adaptation

Organisations

• International Ombudsman Institute, global organisation
• IOI Group, a Malaysian conglomerate
• IO Interactive, a Danish video game developer

Science and technology

• Idiopathic orbital inflammatory disease, involving any area of the orbit
• International Olympiad in Informatics, an annual competitive programming competition

Other uses

• Indication of interest, in financial trading
• Interest on investment or return on investment
• Island of Ireland, the geographical entity encompassing both the Republic of Ireland and Northern Ireland

See also

• LOL (disambiguation)
• 101 (disambiguation)