Sergei Zenjov (born 20 April 1989) is an Estonian professional footballer who plays as a forward for Polish club Cracovia and the Estonia national team.
Zenjov made his first-team debut for Vaprus at the age of 16 in 2006. A year later he joined TVMK. Zenjov was named the Meistriliiga Young Player of the Year in 2007. At the age of 18, after two seasons at TVMK, Zenjov moved abroad.