| ESTA | Eastern Sierra Transit Authority 
| Others |
| ESTA | Eat Smart Think Active
| Others |
| ESTA | Electronic System for Travel Authorisation
| Others |
| ESTA | Electronic System for Travel Authorization
| Others |
| ESTA | Electronic System of Travel Authorization
| Others |
| ESTA | Electronic System Test Equipment
| Others |
| ESTA | Emergency Services Telecommunications Authority
| Others |
| ESTA | Employee Safety Training Assessment
| Others |
| ESTA | Enterprise Systems Technology Activity
| Others |
| ESTA | Entertainment Services and Technology Association
| Others |
| ESTA | Escape System Test Article
| Others |
| ESTA | European Seed Treatment Assurance
| Others |
| ESTA | European String Teachers Association
| Others |