Marat Mubinovich Safin (Russian: Мара́т Муби́нович Са́фин; IPA: [mɐˈrat mʊˈbʲinəvʲɪtɕ ˈsafʲɪn], Tatar: Марат Мөбин улы Сафин Marat Möbin uğlı Safin; born 27 January 1980) is a Russian politician and retired professional tennis player. He first achieved the Association of Tennis Professionals (ATP) world No. 1 singles ranking on November 20, 2000. He was also famous for his emotional outbursts and sometimes fiery temper on court. Safin is the older brother of former world No. 1 WTA player, Dinara Safina. They are the first and only brother–sister tandem in tennis history who have both achieved No. 1 rankings.
In 2011, he became a member of the State Duma representing the United Russia party.
In 2016, he became the first Russian tennis player inducted into the International Tennis Hall of Fame.