| Acronym | Definition |
|---|
| SIDO➣Societa Italiana di Ortodonzia (Italian: Italian Orthodontics Society; Milan, Italy) |
| SIDO➣Small Industries Development Organization (Zambia) |
| SIDO➣State International Development Organizations (Washington, DC) |
| SIDO➣Senior Intelligence Duty Officer (AOC) |
| SIDO➣Single Item Dealer Order |