S.E.S.

SES or S.E.S. can refer to:

;In business
*Single European Sky.
*State Emergency Service, Australian State volunteer emergency organisations. See also New South Wales State Emergency Service
*SES S.A. group management company for SES Astra, SES New Skies, SES Americom and various other satellite companies in which SES holds a stake.
*SES Astra, originally "Société Européenne des Satellites".
*SES Americom, satellite company
*SES New Skies, satellite company
*SES, the callsign of a TV station in Mount Gambier, South Australia
*Subud Enterprise Services.
*Senior Executive Service.
*SCSI Enclosure Services.

;In technology
*Search engine strategies, a search engine marketing conference and expo
*Small Edison Screw, a standard light bulb fitting
*Service Engine Soon, a warning message on modern automobiles
*Solvent excluded surface, a chemistry-related term.
*SecureEasySetup, a technology developed by Broadcom to easily set up wireless LANs with Wi-Fi Protected Access.
*Service Evaluation System, an Operations Support System used by telephone companies
*Switched Ethernet Service, also known as Transparent LAN Service
*SCSI Enclosure Services
*Signed Envelope Sender, an email sender validation protocol, similar to BATV

;In economics
*Single Economic Space or Common Economic Space, a project of economical integration of four post-Soviet states: Belarus, Kazakhstan, Russia and Ukraine
*Socioeconomic status, as used in sociology.
*The former Stock Exchange of Singapore.

;In music
*Smile Empty Soul, a California post-grunge band, or their self-titled album
*S.E.S. (group), a popular Korean pop group, and also their first album, "S.E.S."

;In literature
*"Sex Ecology Spirituality", a book by Integral philosopher Ken Wilber.

;In education
*Saraswati Education Society, a school in the city of Thane, India.
*School of Economic Science.
*School of Environmental Studies, an alternative school in Apple Valley, Minnesota, U.S.A. for juniors and seniors (a.k.a. the "zoo" school due to its proximity and relations to the Minnesota Zoo.)
*Sunnyside Environmental School, an alternative school in Portland, OR
*Sciences économiques et sociales, an optional subject in French schools.

;In plants
*Sensimilla, a seedless, unpollinated marijuana flower.

;In naval terms
*Surface effect ship, a class of ship that has both an air cushion (like a hovercraft) and twin hulls (like a catamaran).
*Sea Explorer Ship, part of the Sea Scouting program. The term is now outdated, and has been changed to Sea Scout Ship.

;In mathematics
*Short exact sequence

;In science
*Scientific Exploration Society, a UK-based charity making scientific expeditions