State Security

State Security may refer to:
 * general concepts of security agency, national security, or secret police

Active intelligence agencies

 * State Security Service (Belgium)
 * State Security Service (Latvia)
 * Lebanese State Security
 * State Security Department of Lithuania
 * State Security Service (Nigeria)
 * Presidency of State Security, Saudi Arabia
 * State Security Agency (South Africa)

Defunct intelligence agencies

 * State Security (Czechoslovakia)
 * Stasi, or Ministry for State Security in the former German Democratic Republic
 * State Security Investigations Service, Egypt
 * Bureau of State Security, South Africa
 * State Security Council, former intelligence coordinating organ in South Africa
 * State Security Administration (Yugoslavia)

Other governmental agencies

 * State Security Administration (Ukraine)