State Security Service

State Security Service may refer to:


 * State Security Service of Abkhazia
 * State Security Service (Azerbaijan)
 * State Security Service (Belgium)
 * State Security Service of East Germany, most commonly known as Stasi
 * State Security Service of Georgia
 * State Security Service (Kazakhstan)
 * State Security Service (Nigeria)
 * State Security Service (Uzbekistan)
 * Directorate for State Security (Yugoslavia) (1946–1991), the Yugoslav secret police organization
 * State Security Directorate (Serbia) (1991–2002), the security agency of the Federal Republic of Yugoslavia