SD may refer to:
Sociedad Deportiva Eibar (in Basque: Eibar Kirol Elkartea) is a Spanish football club based in Eibar, Gipuzkoa, in the autonomous Basque Country.
The SDS Sigma series is a series of computers that were introduced by Scientific Data Systems in 1966. The first machines in the series are the 16-bit Sigma 2 and the 32-bit Sigma 7; the Sigma 7 was the first 32-bit computer released by SDS.
Sociedad Deportiva Erandio Club is a football club from the Basque Country, city Erandio in Biscay (Spain).
Sderot (Hebrew: שְׂדֵרוֹת, Hebrew pronunciation: [sdeˈʁot], lit. Boulevards) is a western Negev city and former development town in the Southern District of Israel.
SD Gundam (Japanese: SDガンダム, Hepburn: Esu Dhī Gandamu, short for Superior defender Gundam) is a media franchise that spawned from the Gundam franchise.
SD-WAN is an acronym for software-defined networking in a wide area network (WAN). An SD-WAN simplifies the management and operation of a WAN by decoupling (separating) the networking hardware from its control mechanism.
The SDEP (Street events Data Exchange Protocol) comprises an XML data schema and web service WSDL for exchanging information about streetworks, roadworks, and street events between systems.
SDA Bocconi School of Management is the graduate business school of Bocconi University and is considered one of the most prestigious business schools in the world.
SDN48 (read "S.D.N. Forty-eight", short for Saturday Night 48) was a Japanese idol girl group, created and produced by Yasushi Akimoto.