| Acronym | Definition |
|---|
| SSG | Staff Sergeant |
| SSG | Special Services Group (Sprint) |
| SSG | Strategic Studies Group |
| SSG | Special Service Group (Pakistan Army) |
| SSG | Stock Selection Guide (NAIC) |
| SSG | Shark Specialist Group |
| SSG | Standard Systems Group |
| SSG | Guided Missile Submarine |
| SSG | Special Study Group |
| SSG | Scientific Steering Group |
| SSG | Särskilda Skyddsgruppen (Swedish Army Special Forces) |
| SSG | Scandinavian Sarcoma Group |
| SSG | Super Shotgun (Quake/gaming) |
| SSG | Senior Steering Group |
| SSG | Split Skin Graft |
| SSG | Structural Silicone Glazing (engineering) |
| SSG | Supreme Student Government (various locations) |
| SSG | Malabo, Equatorial Guinea - Santa Isabel (Airport Code) |
| SSG | Student Support Group |
| SSG | Soil Screening Guidance (US EPA) |
| SSG | Space Systems Group |
| SSG | Software Support Group |
| SSG | Southern Strategy Group |
| SSG | Special Surveillance Group (FBI counter-intelligence unit) |
| SSG | Sensor Systems Group, Inc. |
| SSG | Symbolic Stream Generator (Unisys) |
| SSG | Simple Stochastic Game |
| SSG | Self-Shrinking Generator |
| SSG | Société de Serrurerie Générale (French: General Locksmith Company; est. 1948) |
| SSG | Signaling Server Global (Alcatel) |
| SSG | Svastikos Sukites Greitai (Lithuanian band) |
| SSG | Saginaw Steering Gear |
| SSG | Standard Specific Gravity |
| SSG | Cruise Missile Attack Submarine |
| SSG | Salveson Stetson Group, Inc (executive search firm) |
| SSG | South Shore Gunite (SSGpools.com) |
| SSG | Société Spéléologique Genevoise (French: Geneva Speleological Society; Switzerland) |
| SSG | SS7 Signaling Gateway |
| SSG | Subscriber Service Gateway |
| SSG | Static Synchronous Generator |
| SSG | Scientific Staffs Group |
| SSG | Secretary to the State Governor |
| SSG | Sonority Sequencing Generalization |
| SSG | Synthetic Signature Generator |
| SSG | Stored Serialization Graph |
| SSG | Société des Services Généraux (French: General Services Corporation; Tunisia) |
| SSG | Servicing Scenario Generator |
| SSG | Secondary Sound Channel |
| SSG | Solar Steam Generator (energy) |
| SSG | System Safety/Security Group |
| SSG | Statistical Sciences Group |
| SSG | Service Selection Gateway(s) (Cisco) |
| SSG | Singular Shunt Ground |
| SSG | Shallow Sound Channel |
| SSG | Switching and Security Group (Sprint) |
| SSG | Sales and Service Group |
| SSG | Station Support Group |
| SSG | Signal Structure Group |
| SSG | Scienze dei Servizi Giuridici |
| SSG | Standard Sub-Gridding |
| SSG | Safety Siping and Grooving Co. |
| SSG | Summit Security Group (Canada) |
| SSG | Super, Smashing, Great |
| SSG | Stupid Sales Guy |
| SSG | Special Situations Group (various organizations) |
| SSG | Sunwin Services Group (UK) |
| SSG | Strategic Standardization Group (est. 2008) |