ESS

The suffix -ess (plural -esses) appended to English words makes a female form of the word.

ESS or ess may refer to:

Education

 * Ernestown Secondary School, in Odessa, Ontario
 * European Standard School, in Dhaka, Bangladesh

Government

 * Economic System of Socialism, an East German economic policy
 * Emergency Social Services, in British Columbia, Canada

People

 * Barbara Ess (1948-2021), American photographer
 * Brandon Ess (born 1971), German cricketer
 * Émile Ess (1932–1990), Swiss rower
 * Gene Ess, Japanese-American guitarist

Science and medicine

 * Earth system science
 * Empty sella syndrome
 * Epworth Sleepiness Scale
 * European Social Survey
 * European Spallation Source, a nuclear research facility
 * Euthyroid sick syndrome
 * Evolutionarily stable strategy
 * Explained sum of squares
 * Effective sample size

Sport

 * ES Sétif, an Algerian professional football club
 * Étoile Sportive du Sahel, a Tunisian football club
 * Extreme Sailing Series, a series of sailing regattas
 * Eye Safety Systems, one of major manufacturer of tactical eye protection

Technology

 * Electronic switching system, an automated telephone exchange
 * Emergency stop signal, on automobiles
 * Energy storage system
 * Environmental Sensor Station
 * Environmental stress screening
 * ESS Technology, an American multimedia technology manufacturer
 * Experimental SAGE Subsector, a prototype Cold War Air Defense Sector

Computing

 * Emacs Speaks Statistics
 * Emotion-sensitive software
 * Extended Service Set, a wireless networking unit
 * IBM Enterprise Storage Server

Other uses

 * S, the letter
 * Central Siberian Yupik language
 * Essex, England
 * Essen/Mülheim Airport in Germany
 * Employee self-service
 * Eurest Support Services, a British food services company
 * Eternal Subordination of the Son, theological position