Spetsgruppa "A", also known as Alpha Group, or Alfa, whose official name is Directorate "A" of the FSB Special Purpose Center, is a stand-alone sub-unit of Russia's special forces within the Russian Federal Security Service (FSB). It was created by the Soviet KGB in 1974. Although little is known about the exact nature of its primary directives, it is speculated that the unit is authorised to act under the direct control and sanction of Russia's top political leadership, similar to its sister unit, the Directorate "V" (Vympel), which is officially tasked with protecting Russia's strategic installations, as well as conducting black operations inside and outside Russia. It is also available for extended police duties, for paramilitary operations, and for covert operations, both domestically and internationally.

Spetsnaz, are special forces in many post-Soviet states. Historically, this term referred to the Soviet Union's Spetsnaz GRU, special operations units of the GRU, the main military intelligence service. Today it refers to special forces branches and task forces subordinate to ministries including defence, internal affairs, or emergency situations in countries that have inherited their special purpose units from the now-defunct Soviet security agencies.