| Society for the Study of Motivation | Academic & Science |
| Society for Social Medicine | Academic & Science |
| Société des Sciences Médicales du Grand Duché de Luxembourg | Academic & Science |
| Society of Medical Sciences of the Grand Duchy of Luxembourg | Academic & Science |
| Student Solutions Manual | Academic & Science |
| Single Supervisory Mechanism | Banking |
| Service Stream, LTD. | Business |
| Scottish Ship Management | Business |
| Special Steels and Metals, LTD. | Business |
| Stuart Sawyer Marketing | Business |
| Suruhanjaya Syarikat Malaysia | Business |
| Supply Side Management | Business |
| Shared Savings Mechanism | Business |
| Super Saving Mode | Business |
| Six Speed Manual (transmission) | Business |
| Semi-Solid Metal | Business |
| Sustainable Science Management | Business Management |
| Same Sex Marriage | Community |
| Societas Sancti Michaeli (Society of St. Michael) | Community |
| SouthSide Ministries | Community |
| School of Supernatural Ministry | Community |
| Sunbonnet Sue Mystery | Community |
| Solid State Music | Community |
| Source Support Module | Computer Assembly Language |
| Synchronized State Machine | Computer Hardware |
| Solid State Memory | Computer Hardware |
| Screen Saver Machine | Computer Hardware |
| System Safety Monitor | Computing |
| Standard Supply Module | Computing |
| Software Subcontract Management | Computing |
| Spiral Synth Modular | Computing |
| Sheet Set Manager | Computing |
| Sql Server Manager | Computing |
| Server Status Monitor | Computing |
| Storage Subsystem Manager | Computing |
| Systems Software Manager | Computing |
| Snap Server Manager | Computing |
| System State Manager | Computing |
| Security Server Machine | Computing |
| Sound Status Memory | Computing |
| Subsystem Member | Computing |
| Set System Mask | Computing |
| Synchronized Streaming Media | Computing |
| Structured Scalable Metaformats | Computing |
| Secondary Space Management | Computing |
| Storage Services Module | Computing |
| Server Service Manager | Computing |
| Synchronization Status Messaging | Computing |
| Solid State Micro Technology | Computing |
| Scalar System Memory | Computing |
| Single Segment Message | Computing |
| Service Support Manager | Computing |
| Single State Mode | Computing |
| Single Source Multicast | Computing |
| Strategic Sourcing Methodology | Electronics |
| Spectrum Surveillance Monitor | Electronics |
| So Spake Martin | General |
| Simple Simulation Modeling | General |
| Startup Shutdown Malfunction | General |
| Soft Systems Methodology | General |
| Safety System Monitoring | General |
| stand for Sister Mary | General |
| Security Services Module | General |
| Special Sensor Microwave | General |
| Subliminal Sexual Messages | General |
| Super Smash Mobs | General |
| Shared Screening Module | General |
| Simple Systems Manager | General |
| Self Similarity Map | General |
| Smart Security Manager | General |
| System Schematic Manual | General |
| Simple Series Mod | General |
| Secure Security Module | General |
| Sapphist Sodomite Marriage | General |
| Self Supporting Minister | General |
| Supermicro Server Manager | General |
| Subaru Select Monitor | General |
| Stephen Suzanne and Marilyn | General |
| Sports Study Model | General |
| Session Security Module | General |
| Select Shift Manual | General |
| Suspension Steering Module | General |
| Select Shift Mode | General |
| Super Street Modified | General |
| Safe Speed Monitor | General |
| Special Service Message | General |
| Slouch Seat Module | General |
| Singleton Street Machines | General |
| Silverstone Malaysia | General |
| Satin Silver Metallic | General |
| Sonic Super Mop | General |
| Same Slow Motor | General |
| Super Sailor Moon | General |
| Scolopendra Subspinipes Mutilans | General |
| Super Suicidal Machine | General |
| Spotts Stevens and McCoy | General |
| Strategic Sourcing Matrix | General |
| Supersymmetric Standard Model | General |
| SAFe Scrum Master | General |
| Sack Sorting Machine | General |
| Super Sonic Motor | General |
| Supply Side Modeling | General |
| Super Smart Mud | General |
| Steve Suzanne And Marilyn | General |
| Semi Solid Manufacturing | General |
| Skin Surface Microscopy | Governmental |
| Sault Ste. Marie | Governmental |
| SASARAM | Indian Railway Station |
| Sesiunea ŞtiinţIfică a Muzeelor, Bucureşti | International |
| Savunma Sanayii Mustesarligi (Undersecretary for Defense Industries of Turkey) | International |
| School of Sciences and Mathematics | Maths |
| Soft System Methodology | Maths |
| Serum-Supplemented Medium | Medical |
| Skin-Sparing Mastectomy | Medical |
| Slipped Strand Mispairing | Medical |
| Solid-Supported Membrane | Medical |
| Special Study Module | Medical |
| System Status Management | Medical |
| Senior Support Manager | Medical |
| Social Science Medicine | Medical |
| Superficial Spreading Melanoma | Medical |
| Squadron Sergeant Major | Military and Defence |
| Soldier System Modeling | Military and Defence |
| Simulation Support Module | Military and Defence |
| Surface-to-surface Missile | Military and Defence |
| Super Simple Multicast | Networking |
| Service Session Manager | Networking |
| Sault Ste. Marie Metropolitan Area Airport, Sault Sainte Marie, Michigan USA | Regional |
| Simple Software Manager | Softwares |
| System Software Manager | Softwares |
| Solid Surface Modeler | Softwares |
| Sample Support Module | Space Science |
| Spacecraft Systems Monitor | Space Science |
| Subsystem Manager | Space Science |
| Support System Module | Space Science |
| Systems Support Module | Space Science |
| Standard Solar Model | Space Science |
| Sport Study Model | Sports |
| Synchronization Status Message | Telecommunication |
| Source-specific Multicast | Telecommunication |
