| ISTD | Imperial Society of Teachers Dancing 
| Others |
| ISTD | Imperial Society of Teachers of Dance
| Others |
| ISTD | Imperial Society of Teachers of Dancing
| Others |
| ISTD | In Situ Thermal Desorption
| Others |
| ISTD | In Situ Thermal Destruction
| Others |
| ISTD | Indian Society for Training and Development
| Others |
| ISTD | Indian Society for Training Development
| Others |
| ISTD | Information Systems Technology and Design
| Others |
| ISTD | Instrument Systems and Technology Division
| Others |
| ISTD | Integrated Systems Toxicology Division
| Others |
| ISTD | Inter Services Topographical Department
| Others |
| ISTD | internal standards The index
| Others |
| ISTD | International Society for Trainers and Developers
| Others |
| ISTD | International Society of Typographic Designers
| Others |
| ISTD | International Subscriber Trunk Dialing
| Others |