| Acronym | Definition |
|---|
| SIW➣Strong Independent Woman |
| SIW➣Stoßfänger in Wagenfarbe (German auto company) |
| SIW➣System Information for Windows (system properties and settings display) |
| SIW➣Socialist International Women (various locations) |
| SIW➣Short Instruction Word |
| SIW➣System Information for Windows |
| SIW➣Shipping Intelligence Weekly (publication; Clarkson) |
| SIW➣Simulation Interoperability Workshop |
| SIW➣Sinnlos Im Weltraum (German Star Trek spoof) |
| SIW➣Self-Inflicted Wounds |
| SIW➣Substrate Integrated Waveguide |
| SIW➣Service Interworking (ATM, frame relay, etc.) |
| SIW➣Strategic Intelligence Wing |
| SIW➣Simulation Works, Inc. (Saint Paul, MN) |
| SIW➣Sex Industry Worker (adult services) |
| SIW➣School of Infantry Weapons (Singapore Armed Forces) |
| SIW➣Silent in Waiting (gaming group) |
| SIW➣Software Inspections Workshop (STSC) |
| SIW➣Senior Information Warfare Applications Course |
| SIW➣Sisters of the Incarnate Word and Blessed Sacrament, Cleveland (religious order) |
| SIW➣Share Ideas Willingly |