Security Service
# Security Service

Security Service or security service may refer to:

## Government

* Security agency, a nation's institution for intelligence gathering
* List of security agencies (MI5, NSA, KGB, etc.)
* Sicherheitsdienst (SD), Nazi German agency which translates as "Security Service"
* MI5, also called the Security Service, the United Kingdom's counter-intelligence and security agency
* U.S. Air Force Security Service, a former designation of the US Air Force Intelligence, Surveillance and Reconnaissance Agency
* RCMP Security Service, the Royal Canadian Mounted Police's political intelligence branch
* Swedish Security Service
* Secret service, a government agency concerned with gathering intelligence data
* Secret police, a police agency beyond the law to protect the political power of a dictator or regime

## Other

* Security service (telecommunication), security architecture for the interconnection of open systems
* Security and Intelligence Services (India)
* Private security company
* Private military company
