Vitali Klitschko (born 19 July 1971) and Wladimir Klitschko (born 25 March 1976), known as the Klitschko Brothers, are Ukrainian former professional boxers. During their peak years between 2004 and 2015, they were considered the dominant world heavyweight champions of their era, and among the most successful champions in boxing history.[1][2] In 2011, they entered the Guinness World Records book as brothers with most world heavyweight title fight wins (30 at the time; 40 as of 2020).[3][4][5] In the years following the retirement of heavyweight titlist Lennox Lewis in 2004, the Klitschko brothers would eventually accumulate all four major world heavyweight titles.[2][6] Known for their exceptionally large physiques, speed, and punching power, they each developed a style that utilized their athleticism and arm reach to break down opponents.
In 2013, Vitali retired from boxing, relinquishing the WBC world title, and became a politician in his native Ukraine.[7] Wladimir continued to successfully defend the WBA (Super), IBF, WBO, IBO, and The Ring magazine titles until he was defeated by Tyson Fury in 2015.[8]
Both brothers hold doctorates in sports science.[9]