| Acronym | Definition |
|---|
| S3➣Simple Storage Service (Amazon service) |
| S3➣Heart Sounds |
| S3➣Self-Sustaining Systems (workshop) |
| S3➣Secondary 3 (various locations) |
| S3➣Swiss Space Systems |
| S3➣Silicon and Software Systems |
| S3➣Signals, Sensors and Systems (Royal Institute of Technology, Stockholm, Sweden) |
| S3➣Silverstream Software |
| S3➣Scream Trilogy (movies) |
| S3➣Solid Snake Simulation (Metal Gear Solid 2: Sons of Liberty game) |
| S3➣Selection for Societal Sanity (Metal Gear Solid 2: Sons of Liberty game) |
| S3➣Strategic Services Sourcing Contract (US Army Communications-Electronics Life Cycle Management Command) |
| S3➣Secure Software Systems |
| S3➣Sleep Mode 3 (deep-sleep computer power-down state) |
| S3➣Soils, Sediment and Subsurface Inc (Tallahassee, FL) |
| S3➣Spectrum Supportability System (US DoD Defense Information Systems Agency) |
| S3➣Operations & Training Officer |
| S3➣Safety and Suitability for Service (NATO munitions) |
| S3➣Start-up Number Three (S3, Inc., Santa Clara, CA; founded 1989) |
| S3➣Surgery Scheduling System (Army medical department) |
| S3➣Synergistic Strike System |
| S3➣Special Sensor System |