Andrey Kvassov (Kazakh: Андрей Квассов; born January 16, 1976) is a Kazakhstani-Kyrgyzstani former swimmer, who specialized in sprint and middle-distance freestyle events. He is a two-time Olympian (1996 and 2000), and a top 16 finalist at the 2002 Asian Games. Two years later, at the 2002 Asian Games in Busan, South Korea, Kvassov failed to medal in any of his individual events, finishing sixteenth in the 50 m freestyle (24.13), and tenth in the 100 m freestyle (52.27).