Sergey Aleksandrovich Betov (Belarusian: Сяргей Аляксандравіч Бетаў Siarhiej Betaŭ; Сергей Александрович Бетов;[1] born 15 October 1987) is a Belarusian tennis player competing on the ATP Challenger Tour.

He reached his highest ATP singles ranking of 340 on 1 August 2011 and his highest doubles ranking of 61 was achieved on 26 October 2015.

On April 29, 2016, the International Tennis Federation found that Betov had committed an Anti-Doping Rule Violation in connection with the consumption of meldonium, but further determined that he bore no fault or negligence for the violation and therefore permitted him to resume competition.

[2] He married Russian tennis player Margarita Gasparyan in July 2021; they announced their pregnancy in February 2022.

[3]