Oleksiy Mazikin (born 16 February 1975) is a Ukrainian boxer best known to win the silver medal at the 2001 World Championships in the Men's Super Heavyweight division.

At the Olympics 2000 he lost to southpaw Audley Harrison, at the World Championships 2001 where he achieved his best result beating Alexander Povetkin 36:30 and Pedro Carrión he lost the final to southpaw Ruslan Chagaev.

[citation needed] At the Olympics 2004 he beat Aliaksandr Apanasionak and was defeated by southpaw Roberto Cammarelle.

He lost to compatriot Taras Bidenko on points and was KOd in the first round by amateur superstar Odlanier Solis.

This biographical article related to a Ukrainian boxer is a stub.