Sergey Alexandrovich Darkin (born 18 June 1973[1][2]) is a former motorcycle speedway rider from Uzbekistan, who was a two time Russian Champion.

[5] Born in Fergana, Uzbekistan, Darkin has been a regular member of the Russian World Team Cup squad.

[6] In 1996, Darkin won a silver medal at the Speedway World Team Cup held on 15 September at the Rhein-Main Arena in Diedenbergen.

[10] In September 2005 he suffered serious head injuries in a crash at Togliatti in the European Club Team Champions Cup and was able to return to racing the following year.

[10] He rode for KMZ Lublin in the Polish league, Togliatti in Russia, and signed for Leicester Lions for the 2011 British season, leaving mid-season.