| Acronym | Definition |
|---|
| ITSB | Information Technology Services Branch (Government of Canada, Department of Public Works and Government Services) |
| ITSB | Integrated Theater Signal Battalion (US Army) |
| ITSB | Image Technology Standards Board |
| ITSB | Iowa Trust and Savings Bank (est. 1896) |
| ITSB | Information Technology Services for Business (Cargill) |
| ITSB | Improved Tangential-Sphere Bound |
| ITSB | Information Technology Systems Budget (IT Budget exhibits) |
| ITSB | Information Technology Systems Budget |
| ITSB | Iliotibial Band Syndrome |
| ITSB | Information Technology Systems Bridge |
| ITSB | Information Technology Solutions of Belize |