SID

Sid or SID may refer to:

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

Science and technology

• Sid blood group system
• Saab Information Display in cars
• Security Identifier, used by Microsoft
• Slew-induced distortion, in an amplifier
• Source to image-receptor distance, in radiology
• Sudden ionospheric disturbance, caused by a solar flare
• Surface-induced dissociation, in mass spectrometry
• System identification number, in wireless telephony
• Sound Interface Device in MOS Technology 6581 CBM CPU
• mSin3 interaction domain, a transcriptional repressor domain
• .sid, MrSID image file extension

Entertainment

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

Transport

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

Other uses

• Sid (given name)
• Status–income disequilibrium, a political term
• Sports information director

See also

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