Patrik Sinkewitz (born 20 October 1980) is a German professional road racing cyclist, who is currently suspended from the sport until 2024 for doping and ineligibility offences.

In February 2014 he was banned from competition for 8 years for a second anti-doping rule violation, having tested positive for testosterone in 2007 and recombinant human growth hormone in 2011.

On 18 March 2011 the Union Cycliste Internationale (UCI)[9] announced that Sinkewitz had tested positive for recombinant Human Growth Hormone in a blood sample taken during the GP di Lugano earlier in the year.

[10] The German anti-doping agency appealed to the Court of Arbitration for Sport (CAS), who in February 2014 found Sinkewitz "guilty of an Anti-Doping Rule Violation in the form of the presence of recombinant hGH in his body specimen", banning him for 8 years, imposing a €38,500 fine, and disqualifying all his results from the 2011 GP di Lugano.

[10] Later confirmed in the evidence of the USADA report in 2012, as well as by University of Freiburg doctors, to have done blood transfusions during the 2006 Tour de France alongside some of his teammates on the T-Mobile Team.