IO

Acronym	Definition
IO	Input/Output
IO	Iowa (old style)
IO	Information Operations
IO	Indian Ocean
IO	Interest Only
IO	Inside Out (Frisbee throw)
IO	Industrial-Organizational (Psychology)
IO	British Indian Ocean Territory
IO	If Only
IO	International Organization
IO	Information Object
IO	Information Officer
IO	Information Overload
IO	Infrastructure Optimization
IO	Indirect Object
IO	Intraosseous
IO	Intermon Oxfam (Spain)
IO	Intelligence Officer
IO	In Organization (banking)
IO	Investigating Officer (law enforcement)
IO	Industrial Operations
IO	Information Output
IO	Internal Order
IO	Imperial Order (gaming)
IO	Ionium (Thorium Isotope)
IO	Insertion Order (web advertising)
IO	Internal Organ
IO	Institute of Oceanography
IO	Integrated Operations (oil industry)
IO	Interactive Optimum (cable services)
IO	Indian Orchard (Springfield, MA)
IO	Immigration Officer
IO	Intelligence Oversight
IO	Integrated Optics
IO	Illuminati Online
IO	Information Orientation
IO	Immediate Office
IO	Independent Observations
IO	Inboard Outboard (boat drive system)
IO	Input Operator
IO	International Officer
io	Infinitely Often
IO	Intermediate Objective
IO	Inspecciòn Ocular (Guatemala, police task force)
IO	Insignificant Other
IO	Initial Only
IO	iodine monoxide
IO	Information Outlet (LAN)
IO	Inexperienced Operator
IO	Inspectie van het Onderwijs (Dutch)
IO	Instant Outlining
IO	Installing Officer (International Order of DeMolay)
IO	Inventory Objective
IO	Idiot Operator
IO	InvestOne (software)
IO	Isomerized Olefin
IO	Interoperability Objective
IO	Individually Optimum
IO	Igrzyska Olimpijskie (Polish: Olympic Games)
IO	Institutional Official (various organizations)