Volodymyr Petrovych Sydorenko (; born 23 September 1976), also known as Wladimir Sidorenko, is a Ukrainian former professional boxer who competed from 2001 to 2010, and held the WBA bantamweight title from 2005 to 2008. As an amateur, he won a silver medal at the 2001 World Championships, and consecutive golds at the 1998 and 2000 European Championships; all in the flyweight division. His twin brother is former amateur boxer Valeriy Sydorenko.
Sydorenko won a bronze medal at the 2000 Summer Olympics as a flyweight:
Sydorenko claimed an amateur record of 290âÂÂ20.
Sydorenko won the vacant WBA bantamweight title at expense of Julio Zarate on 26 February 2005. From there, he went on to defend that title six times.
He lost his title by unanimous decision to Anselmo Moreno in May 2008, and again in the rematch on 2 May 2009 by split decision. On 4 December 2010, he was knocked down 3 times en route to 4th-round KO loss to Nonito Donaire.