| Acronym | Definition |
|---|
| IDST | Interdisciplinary Studies |
| IDST | I Don't See That |
| IDST | Inverse Discrete Sine Transform (mathematics) |
| IDST | I Didn't Say That |
| IDST | If Destroyed Still True (used in class rooms, blackboard shorthand and graffiti) |
| IDST | Institute of Defence Scientists and Technologists (India) |
| IDST | Instrument Development Science Team (US NASA) |
| IDST | Integrated Digital Services Terminal |
| IDST | Intra-Dermal Skin Test |
| IDST | Information et Documentation Scientifiques et Techniques (French) |
| IDST | International Deaf Squash Tournament |
| IDST | Integrated Digital Skills Trainer |