| SMSA | Salvage Mechanic Seaman Apprentice 
| Others |
| SMSA | Saturation of Metropolitan Service Agencies
| Others |
| SMSA | Saturation of Metropolitan Services Agencies
| Others |
| SMSA | School Meals Supervisory Assistant
| Others |
| SMSA | Seabee Memorial Scholarship Association
| Others |
| SMSA | Self Managing Security Architecture
| Others |
| SMSA | Seychelles Maritime Safety Administration
| Others |
| SMSA | Signalman Seaman Apprentice
| Others |
| SMSA | Singapore Malaysia Students Association
| Others |
| SMSA | Singapore Motor Sports Association
| Others |
| SMSA | Smith Master Student Association
| Others |
| SMSA | Software Maintenance and Support Agreement
| Others |
| SMSA | Software Maintenance and Support Agreements
| Others |
| SMSA | South Middleton Soccer Association
| Others |
| SMSA | South Midlands Soaring Association
| Others |
| SMSA | Southern Ma Sailing Association
| Others |
| SMSA | Southern Maryland Sailing Association
| Others |
| SMSA | Southern Massachusetts Sailing Association
| Others |
| SMSA | Southern Missouri Soccer Academy
| Others |
| SMSA | Sport and Medical Sciences Academy
| Others |
| SMSA | Sport Management Student Association
| Others |
| SMSA | St Mary's Springs Academy
| Others |
| SMSA | St. Meryl School Association
| Others |
| SMSA | Stanchion Mount Splice Access
| Others |
| SMSA | Standard Metropolitan Statisical Area
| Others |
| SMSA | Standard Metropolitan Statistical Area
| Others |
| SMSA | Standard Metropolitan Statistical Areas
| Others |
| SMSA | Stanford Medical Student Association
| Others |
| SMSA | State Motorcycle Safety Administrators
| Others |
| SMSA | Stochastic Mechanical Systems Automation
| Others |
| SMSA | Swedish Medical Students Association
| Others |
| SMSA | Sydney Mechanics' School of Arts
| Others |