| Acronym | Definition |
|---|
| ES | El Salvador |
| ES | Elementary School |
| ES | En Suite (lodging) |
| ES | Emergency Services |
| ES | Elder Scrolls (video game series) |
| ES | Spain (Internet Domain) |
| ES | Earth Science |
| ES | Expert Systems |
| ES | Electrical System (various companies) |
| ES | Escape |
| ES | España (Spanish: Spain) |
| ES | Estonia |
| ES | Educational Services |
| ES | Environmental Science |
| ES | Español (Spanish) |
| ES | Executive Summary |
| ES | Enterprise Solutions |
| ES | Enterprise Server |
| ES | Earth Surface |
| ES | Environmental Services |
| ES | Executive Secretary |
| ES | Early Start |
| ES | Embryonic Stem |
| ES | Energy Shield (gaming) |
| ES | Electrical Stimulation |
| ES | East Stroudsburg (East Stroudbsburg, PA) |
| ES | Effect Size (calculation of intervention effectiveness) |
| ES | Employment Service |
| ES | Employee Satisfaction |
| ES | Education Specialist |
| ES | Emergency Shelter |
| ES | Electric Seats (automotive) |
| ES | Environmental Statement (UK) |
| ES | Enterprise Systems |
| ES | Extra Strength |
| ES | End System |
| ES | Emmitt Smith (NFL player) |
| ES | Electronic Storage |
| ES | Environmental Specialist |
| ES | Employment Statistics |
| ES | Energy Spectrum |
| ES | Electronic Surveillance |
| ES | Engineering Sample |
| ES | Evolution Strategy |
| ES | Emission Spectroscopy |
| ES | Ensemble Studios (game company) |
| ES | Eurostar (Italian railways) |
| ES | Emergency Supply |
| ES | Earth Station |
| ES | Exchange Student |
| ES | Electrospray |
| ES | Edison Screw (type of cap on an electric light bulb) |
| ES | Electronic Support |
| ES | ETSI (European Telecommunications Standards Institute) Standard |
| ES | Engelmann Spruce (wood) |
| ES | Elite Soldiers (gaming clan) |
| ES | Effective Size |
| ES | Electronic Shopping |
| ES | Escape Sequence |
| ES | Escape System |
| ES | Ecological Survey |
| ES | Enforcement Strategy |
| ES | Einsteinium (element 99) |
| ES | Echo Sounding |
| ES | End Strength |
| ES | Espírito Santo |
| ES | Executive Secretariat |
| ES | Emerald Society (District of Columbia Fire Department) |
| ES | Executive Schedule |
| ES | Electrical Stability |
| ES | Equipment Shelf |
| ES | European Section |
| ES | Edge Switch |
| ES | Eligible for Separation |
| ES | Éducateur Spécialisé (French: Specialized Educator) |
| ES | Enter Shikari (TV show, Japan) |
| ES | Elementary Stream |
| ES | Environmental Security |
| ES | Enough Said |
| ES | Earth Simulator |
| ES | Enemy Status |
| ES | Earth Sustainability |
| ES | Excel Saga (anime) |
| ES | European Standard |
| ES | Electronic Sample |
| ES | Electronic Warfare Support |
| ES | Elevated Standards (Sony) |
| ES | Embedded Simulation |
| ES | Exceeds Standards (school grading system) |
| ES | Engineering System |
| ES | Earth Sensor |
| ES | Sporadic E (radio communications) |
| ES | Element Stability |
| ES | East Seventeen (band) |
| ES | Extended Services |
| ES | Errored Second |
| ES | Enforcement Server (Microsoft) |
| ES | Engineering Study |
| ES | Engineered Safeguards |
| ES | E-Mini S&P 500 |
| ES | Economic Severity |
| ES | Everyday Sunday |
| ES | Equipment Section |
| ES | Ejercicio y Salud (Spanish, magazine) |
| ES | Engineering Specifications |
| ES | Environmental Sampling |
| ES | Extra Segment |
| ES | Expected Shortfall (risk metric) |
| ES | Equipment Specialist |
| ES | EXE-Software |
| ES | Exercise Sciences |
| ES | Exasecond (time measurement) |
| ES | Electricité de Strasbourg (French energy provider; aka EdS) |
| ES | Executive Sedan |
| ES | Explosives Safety |
| ES | Exposure Scenario |
| ES | English Silver (rabbit breed) |
| ES | Equipment Specification |
| ES | Extremely High Standard |
| ES | English Shepherd (dog breed) |
| ES | External Specification |
| ES | Edit Switch |
| ES | EdgeSoft |
| ES | Explorer Scout |
| ES | Estimating Service (insurance) |
| ES | Essential Studies |
| ES | Equipment Scheduling |
| ES | Environmental Survival |
| ES | Earth Shock (gaming, World of Warcraft Shaman Spell) |
| ES | Extraction Steam |
| ES | Extended Segment |
| ES | Enders Shadow (book) |
| ES | Extra Systole (pacemaker) |
| ES | Exposed Structure (architecture) |
| ES | Enhanced Spiral (Caterpillar hose cover) |
| ES | Escape Signal |
| ES | Exceptional Survival |
| ES | Edit-Strike |
| ES | Engrossed in Senate (bill passed and formally typed) |
| ES | Extension Segment |
| ES | Edge of Shoulder (roadway term) |
| ES | Experts Society |
| ES | Express Swap |
| ES | Ether Ships (Xenosaga game) |
| ES | Exploratory Shaft |
| ES | External Subscriber |
| ES | Ethylene-Propylene Side by Side |
| ES | Exploitation Systems Office (NIMA) |
| ES | Employment/Employee System |
| ES | Enoch Systems (Texas) |
| ES | Comment Statement in Execution Stream (software fault) |