Oleksiy Mazikin (born 16 February 1975) is a Ukrainian former professional boxer. He is best known for winning the silver medal at the 2001 World Championships in the Men's Super Heavyweight division.
Mazikin was a successful amateur but kept losing to southpaws. At the 2000 Olympics he lost to southpaw Audley Harrison, at the World Championships 2001 where he achieved his best result beating Alexander Povetkin 36âÂÂ30 and Pedro Carrión, he lost the final to southpaw Ruslan Chagaev.
At the Olympics 2004 he beat Aliaksandr Apanasionak and was defeated by southpaw Roberto Cammarelle.
He turned professional in 2005. He lost to compatriot Taras Bidenko on points and was knocked out in the first round by amateur superstar Odlanier Solis.