Kirill Georgiyevich Denisov (; born 25 January 1988) is a Russian judoka.
He competed at the 2012 Summer Olympics in the -90 kg event and lost in the semifinals to Asley González of Cuba before losing the bronze medal match to Masashi Nishiyama of Japan. Denisov won a silver medal at the 2009 World Judo Championships, a bronze at the 2010 World Judo Championships and a silver at the 2011 European Judo Championships.