Posted in Government & Military, Information Technology, Internet Slang, Organizations, Science DIO stands for Diode DIO stands for Defence Infrastructure Organisation (UK) DIO stands for Délégué à l’Information et à l’Orientation (French: Delegate for Information and Guidance) DIO stands for Digital Input/Output DIO stands for Designated Institutional Official DIO stands for Defence Intelligence Organisation (Australia) DIO stands for Days Inventory Outstanding DIO stands for Down in One DIO stands for District Informatics Officer (India) DIO stands for Data Input-Output DIO stands for Defence Industries Organisation (Iran) DIO stands for Dealer Installed Option (automotive) DIO stands for Defensive Information Operations DIO stands for Discrete Input/Output DIO stands for Defense Intelligence Officer DIO stands for Division Informatique de l’Observatoire (French: Computing Division of the Observatory) DIO stands for Direct Input Output DIO stands for Digital Information Office DIO stands for Deiodinase, Iodothyronine DIO stands for Director of Industry Operations (Bureau of Alcohol, Tobacco and Firearms) DIO stands for Dépistage Individuel Organisé du Cancer (French: Screening Individuals with Cancer; software) DIO stands for Division Information Officer DIO stands for District Intelligence Officer DIO stands for Dietary-Induced Obesity DIO stands for Director of Industrial Operations DIO stands for Directorate of Industrial Operations