Oleg Aleksandrovich Zhestkov (Russian: Олег Александрвоич Жестков; born 20 January 1987) is a Russian sprint canoeist who competes in the four-man K-4 1000 m event.

He won the world title in 2013, placing third in 2011, and had a silver medal at the 2016 European Championships.

His teams finished seventh at the 2012 and ninth at the 2016 Olympics.

[4] In March 2019 Zhestkov tested positive for the banned substance EPO, receiving a four-year ban.

[5] Zhestkov was born in Omsk, but later moved to Krasnodar.