| ESSSA | Eastern Section of the Seismological Society of America 
| Others |
| ESSSA | Educational Support Services for Student Athletes
| Others |
| ESSSA | Employment and Skills Strategies in Southeast Asia
| Others |
| ESSSA | Engineering And Science Services And Skills Augmentation
| Others |
| ESSSA | Engineering Science Services and Skills Augmentation
| Others |
| ESSSA | Equity in Senior Secondary School Assessment
| Others |
| ESSSA | Event Stream Service System Architecture
| Others |
| ESSSA | Shore Patrolman Seaman Apprentice
| Others |