Sergey Arzamasov (; born 9 April 1971 in Shymkent, Ongtustik Kazakhstan) is a retired Kazakhstani triple jumper. His personal best was 17.27 metres, achieved in the qualifying rounds at the 1995 World Championships in Gothenburg. In the final round he finished 12th and last, nonetheless his highest international placement. He also competed at the Olympic Games twice.