GSG 9 der Bundespolizei, formerly Grenzschutzgruppe 9 (German for 'Border Protection Group 9'), is the police tactical unit of the German Federal Police (Bundespolizei). The unit is responsible for combatting terrorism and violent crime, including organized crime. In addition to its headquarters location in Sankt Augustin-Hangelar near Bonn, it also has a base in Berlin. Since 1 August 2017, it has been subordinate to the Federal Police Directorate 11. The state police (Landespolizei) maintain their own regional tactical units known as the Spezialeinsatzkommando (SEK).
GSG 9 is made up of approximately 400 highly trained police officers, whose identities are classified. The specialized unit operates not only within Germany on a federal level, but also safeguards German interests located worldwide, such as embassy property and personnel. Alongside the Kommando Spezialkräfte (KSK) and Kommando Spezialkräfte der Marine (KSM) military special forces of the German Armed Forces (Bundeswehr), the GSG 9 can also be authorized to rescue citizens abroad in hostage situations.