| DIO | Dante Input Output 
| Others |
| DIO | Data In Out
| Others |
| DIO | Data Information Opinion
| Others |
| DIO | Data Input Output
| Others |
| DIO | Database Interface Object
| Others |
| DIO | Days Inventory On-hand
| Others |
| DIO | Days Inventory Outstanding
| Others |
| DIO | Dealer Installed Option
| Others |
| DIO | Defence Infrastructure Organisation
| Others |
| DIO | Defence Innovation Organisation
| Competition, Military, Defence, Organization, Research Center |
| DIO | Defence Intelligence Organisation
| Others |
| DIO | Defense Industries Organization
| Others |
| DIO | Designated Institutional Official
| Others |
| DIO | Detroit Institute of Ophthalmology
| Others |
| DIO | Diet Induced Obesity
| Others |
| DIO | Diet-Induced Obesity
| Others |
| DIO | Digital Input Output
| Others |
| DIO | Direct Input Output
| Others |
| DIO | Director of Industrial Operations
| Others |
| DIO | Disk Input Output
| Others |
| DIO | Distributed Input Output
| Others |
| DIO | District Immunisation Officer
| Others |
| DIO | District Informatic Officer
| Others |
| DIO | Division Information Officer
| Others |
| DIO | Divisional Information Officer
| Others |
| DIO | Do It Ourselves
| Others |
| DIO | DODAG Information Object
| Others |
| DIO | Door Is Open
| Others |
| DIO | Double-floxed Inverted Orientation
| Others |
| DIO | Draw It Out
| Others |
| DIO | Duty Intelligence Officer
| Others |
| DIO | Little Diomede Island, Alaska USA
| Others |