Sid or SID may refer to:

People

  • Sid (given name), includes a list of people with the name

Science and technology

  • Sound Interface Device: the MOS Technology 6581 sound-generating chip used in some Commodore computers
  • Security Identifier, used by Microsoft
  • Sid blood group system
  • Saab Information Display in cars
  • Slew-induced distortion, in an amplifier
  • Source to image-receptor distance, in radiology
  • Speed Indicator Device, a vehicle-activated illuminated sign
  • Sudden ionospheric disturbance, caused by a solar flare
  • Surface-induced dissociation, in mass spectrometry
  • System identification number, in wireless telephony
  • Source Identification codes, identifying marks on optical discs introduced by the International Federation of the Phonographic Industry
  • mSin3 interaction domain, a transcriptional repressor domain
  • .sid, MrSID image file extension
  • Sid (Debian), the code name for the 'unstable' distribution of the operating system

Entertainment

  • Sid (band), a Japanese rock band
  • Síd, a fairy mound in Irish folklore
  • Superman Is Dead, or S.I.D., an Indonesian rock band
  • Sid Vere, a fictional character from Doctors
  • The given name of the Cookie Monster is Sid.

Transport

  • Standard instrument departure, flight procedure
  • Amílcar Cabral International Airport, Sal Island, Cape Verde
  • Sidcup railway station (National Rail station code), London, England

Organizations

  • Danish General Workers' Union, former trade union in Denmark
  • Security and Intelligence Division, Singapore's foreign intelligence agency
  • Servizio Informazioni Difesa, the Italian military secret service 1965-1977
  • Service for Research and Documentation, the Serbian intelligence agency
  • Society for Information Display
  • Society for International Development
  • Sport-Informations-Dienst, German sports media service
  • Special Investigations Division (disambiguation)

Places

  • Šid, Vojvodina, Serbia
  • Šíd, village in Slovakia
  • River Sid, in Devon, England

Other uses

  • Status–income disequilibrium, a political term
  • Sports information director
  • Self-identification or self-id
  • Source Identification (SID) codes, a manufacturer identification method for optical disc production used by the International Federation of the Phonographic Industry.

See also

  • CID (disambiguation)
  • SIDS (disambiguation)
  • Syd (disambiguation)