Serghei Țvetcov (born 29 December 1988) is a Moldovan-born Romanian racing cyclist, who rides for the Denver Disruptors.

In the 2013 and 2014 seasons, he rode for the UCI Continental team Jelly Belly–Maxxis.

His best result in this time was third place in the 2014 USA Pro Cycling Challenge.

Following this result, he signed for the UCI Professional Continental team Androni Giocattoli for the 2015 season.

[5] In December 2022, Țvetcov was announced as part of the Denver Disruptors team for the inaugural season of the National Cycling League, in 2023.