VSA may stand for:
- Vacuum Society of Australia
- Vancouver Soaring Association (vsa.ca)
- Vancouver Society of Astrologers
- Vassar Student Association
- Vector signal analyzer
- Vegan Society of Australia
- Vegetarian Society of Alabama
- Vehicle Stability Assist
- Very small array
- Very Special Arts
- Victim Support Australasia
- Victorian Society in America
- Vietnamese Student Association (multiple)
- Violin Society of America (vsa.to)
- Virginia Society of Anesthesiologists
- Virtual Storage Architecture
- Visual Studio for Applications (Microsoft)
- Voice stress analysis
- Voltaire Society of America
- Voltage stability analysis
- Voluntary Service Aberdeen (vsa.org.uk)
- Volunteer Service Abroad (New Zealand, vsa.org.nz)
- Volumetric structural analysis
- Volumetric subtraction angiography
- Volvo Sports America (vsa.org)