| Acronym | Definition |
|---|
| SDO | Solar Dynamics Observatory (satellite) |
| SDO | Software Development Outsourcing |
| SDO | Service Data Object |
| SDO | San Diego Opera (San Diego, CA) |
| SDO | Super Dancer Online (gaming) |
| SDO | Software Defined Operations (Cisco) |
| SDO | Standard Development Organization |
| SDO | Super Distributed Objects |
| SDO | Sequential Data Set Output |
| SDO | Server Data Object |
| SDO | Spatial Data Option |
| SDO | Service Driven Operations |
| SDO | Serial Data Out |
| SDO | State Demography Office (Colorado) |
| SDO | Special Duty Officer (various armed forces) |
| SDO | Standards Development Organisation (various organizations) |
| SDO | Serial Data Output |
| SDO | Software Delivery Optimization (Borland) |
| SDO | Social Dominance Orientation (psychology) |
| SDO | Sub Divisional Officer (india) |
| SDO | Saldo |
| SDO | Staff Duty Officer |
| SDO | Screen Door Open (golf; Texas) |
| SDO | Savoy Dance Orchestra (Germany) |
| SDO | Service Delivery Objective |
| SDO | Strategic Debriefing Officer (US DoD) |
| SDO | Support Development Officer (UK) |
| SDO | Scattered Disk Object |
| SDO | Squadron Duty Officer |
| SDO | Services Designated Official |
| SDO | Service Delivery Organization |
| SDO | Scheduled Day Off |
| SDO | Surface dans Oeuvre (French: Work Surface) |
| SDO | Super Distributed Object |
| SDO | Staff Development Officer |
| SDO | Scheda Dimissione Ospedaliera (Italian) |
| SDO | Senior Defense Official |
| SDO | Switch Diversity Option |
| SDO | Stamp Distribution Office (US Postal Service) |
| SDO | Sudden Death Overtime |
| SDO | Signed Data Object |
| SDO | Silent Death Online |
| SDO | Solenoid Driver Output |
| SDO | Shared Data Object |
| SDO | Supply Depot Operations |
| SDO | Standards Developing/Development Organization |
| SDO | Series Doubled Obverse (coin collecting) |
| SDO | Aerolineas Santo Domingo, Dominican Republic (ICAO code) |
| SDO | Stormwater Discharge Outfall |
| SDO | Ship Development Objective |
| SDO | Samo Development Organisation (Somalia) |
| SDO | Special Duty Only |
| SDO | Speedometer Drive Output |
| SDO | Support for Diplomatic Operations (Intelligence) |
| SDO | System Development Operations |
| SDO | Solution Delivery Officer (supply chain management) |
| SDO | Ship's Debarkation Officer |