| SS&A | Space Systems and Applications 
| Others |
| SSA | Nilo-Saharan (Other)
| Others |
| SSA | S-band (1.98 to 2.2 GHz) Single Access
| Others |
| SSA | Saab Scania of America
| Others |
| SSA | Safe School Ambassadors
| Others |
| SSA | Safe Speed Assessment
| Others |
| SSA | Safe System Approach
| Others |
| SSA | Salvador, Buenos Aires, Brazil
| Others |
| SSA | Same-Sex Attraction
| Others |
| SSA | Sandhills Suri Alpacas, L. L. C.
| Others |
| SSA | Sarv Shiksha Abhiyan
| Others |
| SSA | Sarv Siksha Abhiyan
| Others |
| SSA | Sarva Shiksha Abhiyan
| Others |
| SSA | Scaled Shape Ap
| Others |
| SSA | School Superintendent Assessment
| Others |
| SSA | School Superintendents of Alabama
| Others |
| SSA | Scratch Scoring Average
| Others |
| SSA | Secondary School Apprentice
| Others |
| SSA | Secondary Security Administrator
| Others |
| SSA | Secondary Switching Area
| Others |
| SSA | Secret Service Agent
| Others |
| SSA | Sector-Specific Agencies
| Others |
| SSA | Secular Student Alliance
| Others |
| SSA | Security Server Agent
| Others |
| SSA | Segment Search Argument
| Others |
| SSA | Segment Search Arguments
| Others |
| SSA | Seismological Society of America
| Others |
| SSA | Self Servicing Account
| Others |
| SSA | Self Storage Association
| Others |
| SSA | Senior Special Agent
| Others |
| SSA | Senior System Administrator
| Others |
| SSA | Serial Storage Architecture
| Others |
| SSA | Seronegative SpondyloArthropathy
| Others |
| SSA | Server Side Application
| Others |
| SSA | Service Sector Assistant
| Others |
| SSA | Service Specialists Association
| Others |
| SSA | Service Station Association
| Others |
| SSA | Service Systems Associates
| Others |
| SSA | Severn Sailing Association
| Others |
| SSA | Shallow Self-Absorbed
| Others |
| SSA | Shared Service Arrangement
| Others |
| SSA | Shared Services Agency
| Others |
| SSA | Shared Services Agreement
| Others |
| SSA | Sharp Shooters Association
| Others |
| SSA | Shock Sensor Alarm
| Others |
| SSA | Short Sale Approval
| Others |
| SSA | Showroom Stock A
| Others |
| SSA | Shuttle Simulation Aircraft
| Others |
| SSA | Side Saddle Association
| Others |
| SSA | Side Slip Angle
| Others |
| SSA | Side, Side, Angle
| Others |
| SSA | Side-to-Side Anastomosis
| Others |
| SSA | Significant Scientific Agreement
| Others |
| SSA | Singapore Soka Association
| Others |
| SSA | Single Static Assignment
| Others |
| SSA | Single-Strand Annealing
| Others |
| SSA | Singular System Approach
| Others |
| SSA | Site System Administration
| Others |
| SSA | Six Start Against
| Others |
| SSA | Sjoegrens Syndrome antigen A
| Others |
| SSA | Skin Sympathetic Activity
| Others |
| SSA | Slot-to-Socket Adapter
| Others |
| SSA | Smart Shield Actuator
| Others |
| SSA | Smart Storage Administrator
| Others |
| SSA | Snmp Sub Agent
| Others |
| SSA | Soaring Society of America
| Others |
| SSA | Soaring Society of America's
| Others |
| SSA | Social Security account
| Others |
| SSA | Social Security Act
| Others |
| SSA | Social Security Ad
| Others |
| SSA | Social Security Administration
| Others |
| SSA | Society for the Study of Addiction
| Others |
| SSA | Software Subscription Agreement
| Others |
| SSA | Software Support Activity
| Others |
| SSA | Solar Survival Architecture
| Others |
| SSA | Soldier Store Advance
| Others |
| SSA | Solid State Amplifier
| Others |
| SSA | Sonic Stadium Awards
| Others |
| SSA | Soprano Soprano Alto
| Others |
| SSA | Source Selection Authority
| Others |
| SSA | Southern South America
| Others |
| SSA | Sovereigns Supranationals and Agencies
| Others |
| SSA | Space Situational Awareness
| Others |
| SSA | Space Suit Assembly
| Others |
| SSA | Special Savings Account
| Others |
| SSA | Special Service Area
| Others |
| SSA | Special Support Activity (NSA)
| Others |
| SSA | Specialty Sleep Association
| Others |
| SSA | Specific Support Actions
| Others |
| SSA | Specific Surface Area
| Others |
| SSA | Speedway Sedans Australia
| Others |
| SSA | Sql Server Agent
| Others |
| SSA | Staff Support Activity
| Others |
| SSA | Standard Small Arms
| Others |
| SSA | Standard Spending Assessment
| Others |
| SSA | Start of Selected Area
| Others |
| SSA | Start Stop Automatic
| Others |
| SSA | State Switching Absorber
| Others |
| SSA | Static Simple Assignment
| Others |
| SSA | Static Single Assignment
| Others |
| SSA | Station Select Address
| Others |
| SSA | Stereo Source Amplifier
| Others |
| SSA | Stochastic Simulation Algorithm
| Others |
| SSA | Stop Sign Assist
| Others |
| SSA | Stout Student Association
| Others |
| SSA | Strapdown Sensor Assembly
| Others |
| SSA | Street Skaters Association
| Others |
| SSA | Streptococcal SuperAntigen
| Others |
| SSA | Student Success Advisor
| Others |
| SSA | Sub Saharan Africa
| Others |
| SSA | Sub Station Alpha
| Others |
| SSA | Sub-Saharan Africa
| Others |
| SSA | Subaru Southern Africa
| Others |
| SSA | Succinic SemiAldehyde
| Others |
| SSA | SulphoSalicylic Acid
| Others |
| SSA | Sumi-e Society of America
| Others |
| SSA | Sun System Analysis
| Others |
| SSA | Super Semi Automatic
| Others |
| SSA | Super Smart A**
| Others |
| SSA | Super Spammers Anonymous
| Others |
| SSA | Super Strong Arms
| Others |
| SSA | Super Systems Administrator
| Others |
| SSA | Superior Septal Approach
| Others |
| SSA | Supervisory Special Agent
| Others |
| SSA | Supply Support Activity
| Others |
| SSA | Supply Support Area
| Others |
| SSA | Survivors of Sexual Assault
| Others |
| SSA | Suspension Specialists Association
| Others |
| SSA | Swiss Society of Aerobiology
| Others |
| SSA | Sygate Security Agent
| Others |
| SSA | System Science Applications
| Others |
| SSA | System Security Administrator
| Others |
| SSA | System Security Analysis
| Others |
| SSA | System Specification for ATCCS (Army Tactical Command and Control System)
| Others |
| SSA | System Supportability Assessment
| Others |
| SSA | The Social Security Administration
| Others |