| Acronym | Definition |
|---|
| OSAD➣Ogólnopolskie Spotkanie Astronomiczne Doktorantów (Poland) |
| OSAD➣Office of the State Appellate Defender (Illinois) |
| OSAD➣Organization of Students of African Descent |
| OSAD➣Office of the Assistant Secretary of Defense (for Command, Control, Communications and Intelligence) |
| OSAD➣Online Study Abroad Directory (University of Minnesota) |
| OSAD➣Organ-Specific Autoimmune Disease |