SID

The acronym SID can refer to:

* Amilcar Cabral International Airport, Sal Island, Cape Verde.
* Standard Instrument Departure at airports, also referred to as “Departure Procedure” (DP)
* Security and Intelligence Department, Singapore foreign intelligence service
* Sensory Integration Dysfunction
* Society for Information Display, a professional society dedicated to the study of the physics and engineering of display devices
* Source Image Distance in Diagnostic Radiography (previously referred to as FFD)
* "Servizio Informazioni Difesa", Italian military secret service from 1965 to 1977 (replaced by the SISMI)
* Shared Information/Data Model
* Sudden infant death syndrome
* Sudden Ionospheric Disturbance
* Sports information director, a position title similar to PR Director or Press Secretary, usually within University/School Systems athletic departments
* Scientific Investigation Division of LAPD
* Saab Information Display inside most Saab automobiles built since 1994

In fiction:
* Space Intruder Detector, an early-warning satellite in the British television series "UFO"

In music:
* "Abuse of SID", a song by Hurt, from their second album "Vol. II"

In technology:
* MOS Technology SID, the Sound Interface Device (built-in sound chip) used in the Commodore CBM-II, Commodore 64 and Commodore 128 home computers
* Security Identifier, a unique alphanumeric character string assigned by a Windows Domain controller
* Silence Insertion Descriptor, a special frame in VOIP audio codecs to enable Comfort noise
* A story identifier which uniquely identifies an article in Slash-based sites, such as Slashdot
* System Identification Number Identifies an Analog, TDMA or CDMA system
* NGOSS Shared Information/Data Model, Definition of NGOSS’s common Information Model
* Seamless Image Database (See MrSID)
* Session ID

See also

* Sid, a given name