| D.S.O. | Distinguished Service Order (British) 
| Others |
| DSO | Daily Sales Outstanding
| Others |
| DSO | Dallas Symphony Orchestra
| Others |
| DSO | Dance Studio Owner
| Others |
| DSO | Dark Sith Order
| Others |
| DSO | Dark Sky Observation
| Others |
| DSO | Dark Sky Observatory
| Others |
| DSO | Dark Star Orchestra
| Others |
| DSO | Data Security Officer
| Others |
| DSO | Data Services Only
| Others |
| DSO | Data Source Object
| Others |
| DSO | Data Store Object
| Others |
| DSO | Day Sales Outstanding
| Others |
| DSO | Days of Sales Outstanding
| Others |
| DSO | Days Sales Outstanding
| Others |
| DSO | Days Sales OutstandingIt
| Others |
| DSO | Dealer Select Option
| Others |
| DSO | Dealer Serviced Option
| Others |
| DSO | Dealer Special Order
| Others |
| DSO | Decision Support Object
| Others |
| DSO | Deep Sky Object
| Others |
| DSO | Deep Sky Objects
| Others |
| DSO | Deep Space Object
| Others |
| DSO | Deepsky Small Optics
| Others |
| DSO | Defence Science Organisation
| Others |
| DSO | Defense Sciences Office
| Others |
| DSO | Defense Services Organization
| Others |
| DSO | Defense Spectrum Organization
| Others |
| DSO | Defensive Systems Officer
| Others |
| DSO | Deinstitutionalization of Status Offenders
| Others |
| DSO | Delaware Symphony Orchestra
| Others |
| DSO | Delft South Origins
| Others |
| DSO | Delta Sigma Omicron
| Others |
| DSO | Dental Support Organization
| Others |
| DSO | Deputy Supply Officer
| Others |
| DSO | Descemet Stripping Only
| Others |
| DSO | Design Space Optimization
| Others |
| DSO | Design Studio Online
| Others |
| DSO | Designated School Official
| Others |
| DSO | Designated School Officials
| Others |
| DSO | Detroit Symphony Orchestra
| Others |
| DSO | Development Services Office
| Others |
| DSO | Development Solutions Org
| Others |
| DSO | Developmental Services Ontario
| Others |
| DSO | Device Software Optimization
| Others |
| DSO | Digital Sampling Oscilloscope
| Others |
| DSO | Digital Skills Observatory
| Others |
| DSO | Digital Storage Oscilloscope
| Others |
| DSO | Direct Sales Organization
| Others |
| DSO | Direct Service Organisation
| Others |
| DSO | Direct Sparse Odometry
| Others |
| DSO | Disability Services Office
| Others |
| DSO | Disaster Summary Outline
| Others |
| DSO | Dispatch Scheduling Optimizer
| Others |
| DSO | Dispatcher's Standing Order
| Others |
| DSO | Displaced Significant Other
| Others |
| DSO | Distal Subungual Onychomycosis
| Others |
| DSO | Distinctive Service Order
| Others |
| DSO | Distinguished Service Order
| Others |
| DSO | Distributed Server Option
| Others |
| DSO | Distributed Shared Objects
| Others |
| DSO | Distribution System Operator
| Others |
| DSO | Distribution System Overseer
| Others |
| DSO | District Sales Office
| Others |
| DSO | District Special Order
| Others |
| DSO | District Support Operations
| Others |
| DSO | Division of Security Operations
| Others |
| DSO | Domestic Special Order
| Others |
| DSO | Drakensang Online
| Others |
| DSO | Driving Standards Observer
| Others |
| DSO | Dry Socket Obtundant
| Others |
| DSO | Dual Small Outline Package
| Others |
| DSO | Dynamic Shared Object
| Others |
| DSO | Dynamic Shared Objects
| Others |
| DSO | Dynamic Soundstage Organizer
| Others |