| ex alunno | ex-alumno |
| Ex cathedra | Ex cathedra |
| ex combattente | ex combatiente |
| ex gratia | como favor |
| ex marito | ex marido |
| ex moglie | ex mujer |
| Ex nihilo nihil fit | Ex nihilo nihil fit |
| ex officio | ex oficio |
| ex tempore | improvisado |
| Exa | Exa |
| Exabyte | Exabyte |
| Exbibit | Exbibit |
| Exbibyte | Exbibyte |
| Excalibur | Excalibur |
| Excalibur Hotel and Casino | Excalibur |
| Excelsior Rotterdam | Excelsior Rotterdam |
| Exchange-traded fund | Exchange Traded Fund |
| Exchangeable image file format | Exchangeable image file format |
| Executable and linkable format | Executable and Linkable Format |
| Exergia | Exergía |
| Exeter | Exeter |
| Exit poll | Sondeo de opinión |
| Exocet | Misil Exocet |
| Exocoetidae | Exocoetidae |
| Exodus | Éxodo |
| Exoforia | Exoforia |
| Exopterygota | Exopterygota |
| Expanded Memory Specification | Memoria expandida |
| Explicitly Parallel Instruction Computing | EPIC |
| exploit | hazaña |
| Exploited | The Exploited |
| Explosions in the sky | Explosions In The Sky |
| Exposé | Exposé |
| Expressed sequence tag | Expressed sequence tag |
| Extended play | Extended play |
| Extensible Authentication Protocol | Extensible Authentication Protocol |
| Extensible Firmware Interface | Extensible Firmware Interface |
| Extensible Stylesheet Language | XSL |
| Exterior Gateway Protocol | Exterior Gateway Protocol |
| Externsteine | Externsteine |
| extra | gratificación |
| Extra Ecclesiam nulla salus | Extra Ecclesiam Nulla Salus |
| extra- | extra- |
| extracellulare | extracelular |
| extraconiugale | extra conyugal |
| extragalattico | extragaláctico |
| Extragear | Extragear |
| extragiudiziale | extrajudicial |
| extragiuridico | extrajudicial |
| Extraordinary rendition | Rendición extraordinaria |
| extrapolare | extrapolar |
| extrasensoriale | extrasensible |
| extrasistolico | extrasistólico |
| extraterrestre | extraterrestre |
| extraterritoriale | extraterritorial |
| Extreme Championship Wrestling | Extreme Championship Wrestling |
| Extreme High Definition | Alta Definición Extrema |
| Extreme Programming | Programación Extrema |
| Extremely high frequency | Frecuencia extremadamente alta |
| Exuvia | Exuvia |
| Exxon Valdez | Exxon Valdez |
| ExxonMobil | ExxonMobil |
| eye-liner | delineador de ojos |
| eyeliner | delineador de ojos |
| Eyes Wide Shut | Eyes Wide Shut |
| Eygaliers | Eygaliers |
| Eysins | Eysins |
| Eysturoy | Eysturoy |
| Eyvind Johnson | Eyvind Johnson |
| EZ Aquarii | EZ Aquarii |
| Ezcároz | Ezcároz |
| Ezechia | Ezequías |
| Ezechiele | Ezequiel |
| Ezequiel Lavezzi | Ezequiel Lavezzi |
| Ezine | Ezine |
| eziologia | etiología |
