| Acronym | Definition |
|---|
| SJA | St. John Ambulance |
| SJA | Staff Judge Advocate |
| SJA | The Sarah Jane Adventures (British science fiction) |
| SJA | St. Joseph's Academy (Baton Rouge, LA Catholic high school) |
| SJA | Sports Journalism Awards (UK) |
| SJA | St. Johnsbury Academy |
| SJA | Saint Joseph Academy (Brownsville, TX) |
| SJA | Social Justice Advocate (various locations) |
| SJA | Syndicat de la Juridiction Administrative (French: Union of Administrative Jurisdiction) |
| SJA | Stanford Japanese Association (Stanford University; Palo Alto, CA) |
| SJA | Safe Job Analysis (hazardous workplaces) |
| SJA | Singapore Jewellers Association (trade group) |
| SJA | Service Judiciaire d'Arrondissement (French: Service Judicial District; Belgium) |
| SJA | Saint James Academy (Malabon, Philippines) |
| SJA | synthetic jet actuator |
| SJA | Spokane Junior Academy (Spokane, WA) |
| SJA | San Jose Academy (Catholic school in Navotas, Metro Manila, Philippines) |
| SJA | Show Jumping Archive (Italy) |
| SJA | Strategy Justification and Approval |
| SJA | Swing Joint Assembly (sprinkler system component) |
| SJA | Swiss-Japan Association for Engineers and Scientists (Switzerland) |