| Abbreviation | Definition |
|---|---|
| EOO | Ethernet Over OTN |
| EOP | Ethernet Over Powerline |
| EOS | End Of Stream |
| EPD | Early Packet Discard |
| EPIC | Enhanced Programmable IRC II (Internet Relay Chat version 2) Client |
| EPIC | Enhanced Programmable IRCII Client |
| EPLR | Effective Packet Loss Ratio |
| EPLS | Ethernet Private Line Service |
| EPNG | East Pasco Networking Group |
| EPOB | Electronic Post Office Box |
| EPOP | Ethernet Point Of Presence |
| EPP | Extensible Provisioning Protocol |
| EPROM | Erasable Programmable Read-Only Memory |
| EPS | Email Processing System |
| EPS | Event Protocol Sharing |
| EPV | End Process Verification |
| ERA | Enterprise Ready Applications |
| ERA | Extensible Registration Authority |
| ERB | Entended Range Broadcast |
| eRD | Electronic Repeat Dispensing |