| Acronym | Definition |
|---|
| VSI➣Very Short Introductions (book series) |
| VSI➣Vision Systems, Inc. |
| VSI➣Vinyl Siding Institute |
| VSI➣Vertical Speed Indicator |
| VSI➣Virtual Switch Instance |
| VSI➣Vehicle System Interface |
| VSI➣Voltage Source Inverter |
| VSI➣Virtual Switch Interface |
| VSI➣Voluntary Separation Incentive |
| VSI➣Visual Studio Installer (Microsoft) |
| VSI➣Vision Systems International |
| VSI➣Vertical Shaft Impactor (industrial rock crushing machine type) |
| VSI➣Versatile Seismic Imager (Schlumberger tool) |
| VSI➣Virtual Socket Interface |
| VSI➣Very Seriously Ill |
| VSI➣Vertical Scanning Interferometry |
| VSI➣Very Seriously Injured |
| VSI➣Volontaire de Solidarité Internationale (French: Volunteers for International Solidarity) |
| VSI➣Visual Site Inspection (environmental reports) |
| VSI➣Vendor Single Interest |
| VSI➣VLBI Standard Interface |
| VSI➣Virginia Semiconductor, Inc. |
| VSI➣Volunteer Sector Initiative |
| VSI➣Video Simulation Interface (US NASA) |
| VSI➣View Student Information (resource; various locations) |
| VSI➣Visual Stability Index (concrete) |
| VSI➣Vascular Society of India |
| VSI➣Vertical Situation Indicator |
| VSI➣Virginia Spine Institute |
| VSI➣Virtual Server Infrastructure (database management) |
| VSI➣Vegetarian Society of Ireland (est. 1978) |
| VSI➣Stalling Speed in a Specified Flight Configuration |
| VSI➣Veteran Solutions, Inc. (Upper Marlboro, MD) |
| VSI➣Verify Supplier Invoice |
| VSI➣Vessel Superintendents (UK) |
| VSI➣Virtual Screen Interface |
| VSI➣Vertical Scale Indicator |
| VSI➣Velocity and Steering Indicator |
| VSI➣Vehicle State Interface |
| VSI➣Vietnam State Inspectorate |
| VSI➣Vendor Single Insurance |