| SSS | Siding Spring Survey | Acronym |
| SSS | Side Side Side (an acronym for remembering congruent triangles) | Acronym |
| SSS | Sigue Sigue Sputnik (band) | Acronym |
| SSS | (observing program) SuperCOSMOS Sky Surveys | astronomy |
| SSS | Static Spherically Symmetric | Chemistry abbreviations |
| SSS | Super Special Seniors | Community abbreviations |
| SSS | School and Student Services | Educational abbreviations |
| SSS | School Security System | Educational abbreviations |
| SSS | Smoking, Self-harm, Stealing | Educational abbreviations |
| SSS | Student Special Services | Educational abbreviations |
| SSS | Selective Smoothness Syndrome | Electronics abbreviations |
| SSS | Sinusoidal Steady State | Electronics abbreviations |
| SSS | Solid State Simulation | Electronics abbreviations |
| SSS | Stable Steady State | Electronics abbreviations |
| SSS | Stereo Simulator System | Electronics abbreviations |
| SSS | System/Subsystem Specification | Electronics abbreviations |
| SSS | Silent Steel Screenshot | media abbreviations and acronyms |
| SSS | Studio Sound Simulator | media abbreviations and acronyms |
| SSS | Scout Sniper School | Military abbreviations |
| SSS | Self-Stecker Selection | Military abbreviations |
| SSS | Senior Span Segment | Military abbreviations |
| SSS | Shelter Subsystem | Military abbreviations |
| SSS | Shoot, Shovel, and Shut the door | Military abbreviations |
| SSS | Singing Short Sword | Military abbreviations |
| SSS | Software Segment Specification | Military abbreviations |
| SSS | SOS for a Submarine Attack | Military abbreviations |
| SSS | Storage Serviceability Standard | Military abbreviations |
| SSS | Sub Sonic Sniper | Military abbreviations |
| SSS | System Segment Specification | Military abbreviations |
| SSS | Sri Sathya Sai | Non-Profit Organizations |
| SSS | Serious Statistical Software (Company) | software abbreviations and acronyms |
| SSS | Signwriting Symbol Sequence | software abbreviations and acronyms |
| SSS | Simple Scheduler Sol | software abbreviations and acronyms |
| SSS | Software Subscription Service | software abbreviations and acronyms |
| SSS | Stochastic Structure Search | software abbreviations and acronyms |
| SSS | Symbol System Satisfiability | software abbreviations and acronyms |
| SSS | Sequential Sports Shift | sports abbreviations |
| SSS | Standard Scratch Score | sports abbreviations |
| SSS | Staples Sports Scoreboard | sports abbreviations |
| SSS | Sunday Slalom Sessions | sports abbreviations |
| SSS | Singapore Students Society | University abbreviations |
| SSS | Student Support Services | University abbreviations |