Igor Sitnikov (Kazakh: Игорь Ситников; born July 13, 1977) is a Kazakh former swimmer, who specialized in sprint freestyle events. He won a bronze medal at the 1998 Asian Games, and later represented Kazakhstan at the 2000 Summer Olympics. Sitnikov made his official debut at the 1998 Asian Games in Bangkok, Thailand, where he shared bronze medals with China's Zhao Lifeng and Chinese Taipei's Huang Chih-yung in the 100 m freestyle (52.21).