Sergey Fomin (born 1 February 2001) is an Uzbek tennis player. Fomin has a career high ATP singles ranking of world No. 323 achieved on 16 February 2026 and a career high ATP doubles ranking of No. 313 achieved on 17 July 2023. Fomin is currently the No. 1 Uzbek player.
Fomin represents Uzbekistan at the Davis Cup, making his first appearance in a tie against Turkey in March 2022.