| Acronym | Definition |
|---|
| ETSA➣European Textile Services Association (est. 1994; Brussels, Belgium) |
| ETSA➣Electricity Trust of South Australia |
| ETSA➣European Telecommunication Services Association |
| ETSA➣East Timor Students Association (Australia) |
| ETSA➣Extended Topology Synthesis Algorithm |
| ETSA➣Seaman Apprentice, Electronics Technician Striker (Naval Rating) |