Irina Nikolayevna Kalentieva (Russian: Ирина Николаевна Калентьева) (born 10 November 1977 in Batyrevsky District, Chuvashia) is a retired professional cross-country mountain bike racer from Russia.

She won the UCI Mountain Bike & Trials World Championships in 2007 and 2009.

She also won a bronze medal at the 2008 Summer Olympics in Beijing and finished fourth at the 2012 Summer Olympics in London and 13th at the 2004 Summer Olympics.

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