Sergey Smiryagin (Russian: Серге́й Смирягин; 27 October 1963 – 11 July 2020) was a Russian freestyle swimmer.

[1] He competed at the 1980 Summer Olympics in the 100 m freestyle, but failed to reach the final.

[2] After the Olympics he won three European titles and three silver medals at the world championships,[3] as well as a gold medal at the 1983 Summer Universiade.

[4] He missed the 1984 Summer Olympics due to their boycott by the Soviet Union and competed in the Friendship Games instead, winning three gold medals.

This biographical article related to a Russian swimmer is a stub.