| Abbreviation | Definition |
|---|---|
| EOIR | Electro-Optical/InfraRed |
| EO-IR | CM Electro-Optical-Infrared Countermeasure |
| EO-IR | Electro-Optical-Infrared |
| EOL | End Of Line |
| EOL | End of Link |
| EOM | End Of Message |
| EOMS | Electro Optic Missile Sensor |
| EONW | Effects of Nuclear Weapons |
| EOOW | Engineering Officer Of the Watch |
| EOP | Emergency Operating Procedures |
| EOP | Executive Office of the President |
| EOQ | Economic Order Quantity |
| EOR | Eastern Ontario Regiment |
| EOR | Emergency Operating Room |
| EOR | Explosive Ordinance Reconnaissance |
| EOS | Earth Observing System |
| EOS | Element Of Surprise |
| EOS | Employed Operational State |
| EOS | End Of Screen |
| EOS | End Of Service |