- DSDO stands for Deep South Dance Off (clogging)
- DSDO stands for Den Store Danske Ordliste (Danish: Concise Danish Dictionary)
- DSDO stands for District Social Defence Officer (India)
- DSDO stands for District Social Development Officer (Kenya)
- DSDO stands for Data Systems Design Office
- DSDO stands for Down Since Day One
- DSDO stands for Deck Starboard Door Opened
- DSDO stands for Dadihiye Somali Development Organisation (est. 1993; UK)
DSDO