Aslan Ûsoyan (Georgian: ????? ???????; Russian: ????´? ????´????? ????´?) (27 February 1937 – 16 January 2013), also known as Grandpa Hassan ("??? ?????" Ded Hasan) or just Grandpa ("???????"), was a Russian mafia boss, an ethnic Kurdish Yazidi mobster and thief in law, who began his career operating in Georgia, continued in Moscow, Ural, Siberia, Uzbekistan, Krasnodar, Sochi, and other parts of the former Soviet Union.
According to The Economist, he was "reputed to be Russia’s mafia boss."