ESS is the name of the Latin script letter S.
ESS may also refer to:
In computing:
- Emacs Speaks Statistics, an add-on package for the Emacs editor
- Electronic Speech Systems, a software company from Berkeley, USA that did synthesized speech for commercial home computer programs in the 80s, nowadays called ESS Technology
- Ensoniq Soundscape, a soundcard produced by Ensoniq Corp.
- Environmental stress screening, in electronic hardware tests
- Enterprise Storage and Servers, part of the Technology Solutions Group business segment of Hewlett-Packard
- IBM Enterprise Storage Server, is an enterprise storage array from IBM
- Extended Service Set, in wireless networking
- ESS Technology, Inc., a manufacturer of digital video and audio semiconductors
- Efficient Subwindow Search, a method of image processing
- Enterprise Support Systems, is a pack of IT systems which supports internal processes
In geography:
- Enfield Station School, Enfield, Maine
- Essex County, England (Chapman code)
- European Standard School, an English Medium School in Dhaka
In government:
- Economic System of Socialism, economic policy implemented in East Germany in the 1960s
- European Security Strategy, a policy document of the European Union
- Emergency Social Services program, under the Provincial Emergency Program, the emergency preparedness program in British Columbia, Canada
In telecommunications:
- Electronic switching system, in telecommunications
- Endemol Southern Star, acronym for the Australian television company
- Electronic Safety and Security systems designer, BICSI Certification.
Other:
- Eastern Sociological Society
- Early Sound Scattering, a diffuse-fronted recording control room configuration
- Employee Self Service, in SAP or human resource management system
- Endoscopic Sinus Surgery
- English Springer Spaniel, a breed of dog
- Environmental and Social Studies
- Epworth Sleepiness Scale, for diagnosing sleep disorders
- Esther (disambiguation), diminutive of the given name Esther
- Étoile Sportive du Sahel, Tunisian Football club
- European Spallation Source a proposed neutron research facility
- Explained sum of squares, in statistics
- Eurest Support Services, a subsidiary of the catering company, the Compass Group
- Evolutionarily stable strategy, in evolutionary biology and game theory
- Existing Store Sales, also known as Same store sales
- European social survey