State Security Service
- Committee for State Security (disambiguation)
- Directorate for State Security (Yugoslavia)
- Ministry for State Security (disambiguation)
- Stasi
- State Intelligence Agency (disambiguation)
- State Intelligence Service (disambiguation)
- State Security (disambiguation)
- State Security Agency (disambiguation)
- State Security Directorate (Serbia)
- State Security Service (Azerbaijan)
- State Security Service (Belgium)
- State Security Service (Kazakhstan)
- State Security Service (Nigeria)
- State Security Service (Uzbekistan)
- State Security Service of Abkhazia
- State Security Service of Georgia