Petr Sergeevich Gubanov (, born April 3, 1987) is a Russian former professional basketball player who last played for Khimki of the VTB United League and the EuroLeague. Standing at , he played at the power forward and center positions.
Gubanov has played with the following clubs in his pro career: CSK VVS Samara, Universitet Yugra Surgut, Khimki Moscow Region, Dynamo Moscow, UNICS Kazan, Enisey Krasnoyarsk, and Nizhny Novgorod.
Gubanov was a member of the junior national teams of Russia. With Russia's junior national teams, he played at the 2005 FIBA Europe Under-18 Championship, the 2006 FIBA Europe Under-20 Championship, and the 2007 FIBA Europe Under-20 Championship.
He has also been a member of the senior men's Russian national basketball team.