| Abbreviation | Definition |
|---|---|
| EO | Engineering Order |
| EO | Equal Opportunity Program Office |
| EOBD | European On Board Diagnostics |
| EOBD | European On-Board Diagnostics |
| EOC | End Of Contract |
| EOC | Engine Order Capability |
| EOC | Engine-Out Capability |
| EOC | EOS (Earth Observing System) Operations Center |
| EOD | Entry On Duty |
| EOD | Environmental Observation Division |
| EOD | Estimated On Dock |
| EODB | End Of Data Block |
| EOF | Experimenter's Operations Facility |
| EOG | ElectroOculoGram |
| EOHT | External Oxygen and Hydrogen Tanks |
| EOI | Earth Orbit Insertion |
| E-OK | Electronically OK |
| EOM | Earth Observation Mission |
| EOM | Emergency Oxygen Mask |
| EOM | End Of Mission |