| Acronym | Definition |
|---|
| OISD➣Oil Industry Safety Directorate (India) |
| OISD➣Orcas Island School District (Washington) |
| OISD➣Office of Instructional Support & Development |
| OISD➣Orangefield Independent School District (Orange, TX) |
| OISD➣Oceana Intermediate School District (Hart, MI) |
| OISD➣Olney Independent School District (Texas) |