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 In survey methodology, the design effect (generally denoted as D_ or D_^2) is a measure of the expected impact of a sampling design on the variance of an estimator for some parameter. It is calculated as the ratio of the variance of an estimator b ...

Sport

* ES Sétif, an Algerian professional football club * Étoile Sportive du Sahel, a Tunisian football club * Extreme Sailing Series, a series of sailing regattas

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 A human resources management system (HRMS) or Human Resources Information System (HRIS) or Human Capital Management (HCM) is a form of Human Resources (HR) software that combines a number of systems and processes to ensure the easy management o ...

* Eurest Support Services, a British food services company {{Disambiguation, surname