| Acronym | Definition |
|---|
| EFTO➣Elementary Teachers' Federation of Ontario (Canada) |
| EFTO➣Torbacka (airport code; Finland) |
| EFTO➣Engine Failure on Take-Off (aviation) |
| EFTO➣Encrypt for Transmission Only |
| EFTO➣Encrypt(ed) for Transmission Only (US DoD) |
| EFTO➣Efficiency of Power Generation for Transportation Use with Oil (Carolina Environmental Program) |