XSI
| Acronym | Definition |
|---|---|
| XSI | Exchangeable Solution for Instrumentation |
| XSI | Extended Service Interface |
| XSI | XML Schema Instance |
| XSI | X/Open System Interface |
| XSI | Xanadu Servers Inc. (Internet solutions firm; Meridian, ID) |
| XSI | Xybernaut Solutions Inc. (Vienna, VA) |
| XSI | Express Ship Interface (SAP system) |
| XSI | Xenos Summer Institute |