Sergey Rabchenko (birth name: Siarhei Rabchanka, born 23 February 1986 in Minsk) is a Belarusian professional boxer.
After an amateur career which consisted of 217 wins from 238 fights, Rabchenko made his professional debut in September 2006 with a first-round knock-out victory over Andrei Matveeu in Minsk.
In June 2012 he won his first significant title when he beat Ryan Rhodes in the seventh round via a body shot to win the EBU light middleweight belt.
He made the first defence of his title against Cedric Vitu at the Manchester Arena in November 2012 where he won by split decision.
Rabchenko recorded his first professional loss against Australian Anthony Mundine.