STDI
| Acronym | Definition |
|---|---|
| STDI | Short-Term Disability Insurance |
| STDI | Small Town Design Initiative |
| STDI | Southwest Technology Development Institute (New Mexico State University; Las Cruces, NM) |
| STDI | Science and Technology Diplomacy Initiative (UN Conference on Trade and Development) |
| STDI | Special Technical Development Investigation |
| STDI | Systolic Time Diameter Index |