Russian oligarchs are business oligarchs of the former Soviet republics who rapidly accumulated wealth in the 1990s via the Russian privatisation that followed the dissolution of the Soviet Union. The failing Soviet state left the ownership of state assets contested, which allowed for informal deals with former USSR officials as a means to acquire state property.

Privatization in Russia describes the series of post-Soviet reforms that resulted in large-scale privatization of Russia's state-owned assets, particularly in the industrial, energy, and financial sectors. Most privatization took place in the early and mid-1990s under Boris Yeltsin, who assumed the presidency following the dissolution of the Soviet Union.