XA
| Acronym | Definition |
|---|---|
| XA | Extended Architecture |
| XA | Activated Factor X |
| XA | Extended Attribute |
| XA | Extensible Architecture |
| XA | Exchange Access |
| XA | Chi Alpha Campus Ministries, USA (Assemblies of God secular college & university student outreach) |
| XA | Exclusion Area (military) |
| XA | Exiled Alliance (gaming) |
| XA | Harley-Davidson World War II shaft drive military motorcycle model |
| XA | XRay Angio |
| XA | Expanded Architecture |
| XA | Secretariat/Executive Agents |