|Born|| 21 May 1986
Moscow, Russian SFSR, USSR
|Peak rating||2667 (September 2009)|
Gadir Guseinov (sometimes transliterated as Huseynov; Azerbaijani: Qədir Hüseynov; born 21 May 1986) is an Azerbaijani chess grandmaster.
Born in Moscow, Guseinov started playing chess under the guidance of Shahin Hajiev. He lived in his native city and played for Russia from 1994 to 1998.
In 1994, he won the European under-10 championship in Băile Herculane.
In 2008 tied for 1st-8th with Nigel Short, Vadim Milov, Aleksej Aleksandrov, Baadur Jobava, Alexander Lastin, Tamaz Gelashvili and Farid Abbasov in the President's Cup in Baku. Guseinov won the Ugra Governor's Chess Blitz Cup in 2011. In 2013 he tied for 1st-3rd with Igor Kurnosov and Aleksandr Shimanov in the Nakhchivan Open..
He played in the gold medal-winning Azerbaijani team at the European Team Chess Championships in Novi Sad in 2009 and in Warsaw in 2013, alongside Shahriyar Mammadyarov, Teimour Radjabov, Vugar Gashimov (in 2009), Eltaj Safarli (in 2013) and Rauf Mammadov, previously winning bronze medal in 2007 and silver in 2011.