Sergei Zenjov (born 20 April 1989) is an Estonian professional footballer who plays as a forward for Meistriliiga club Flora and the Estonia national team.

Zenjov made his debut in the Meistriliiga on 8 March 2006, playing for Vaprus, and scored his side's only goal in a 1–3 away loss to TVMK.

[12][13] After leaving Blackpool, Zenjov signed a two-and-a-half-year contract with Russian Premier League club Torpedo Moscow on 12 January 2015.

[18] He made his debut in the Ekstraklasa on 15 July 2017, in Cracovia's first match of the 2017–18 season, and scored in the 1–1 home draw against Piast Gliwice.

Zenjov made his senior international debut for Estonia on 20 August 2008, in a 2–1 home win over Malta in a friendly.