Joseph William Calzaghe is a Welsh former professional boxer who competed from 1993 to 2008. He held multiple world championships in two weight classes, including unified and lineal titles at super-middleweight, and the Ring magazine light-heavyweight title.
Calzaghe is the longest reigning super middleweight world champion in boxing history, having held the World Boxing Organization (WBO) title for over 10 years and defending it against 20 opponents (a record in the division, shared with Sven Ottke) before moving up to light-heavyweight. As his super-middleweight and light-heavyweight reigns overlapped, he retired with the longest continual time as world champion of any active boxer at the time. Calzaghe was the first boxer to unify three of the four major world titles (World Boxing Association, World Boxing Council, and WBO) at super-middleweight, and was the inaugural Ring champion in that weight class.
Between 2006 and 2008, Calzaghe was ranked by The Ring as one of the world's top ten active boxers, pound for pound, reaching a peak ranking of third in January 2009. He retired in February 2009 with an undefeated record of 46 wins, and as a reigning world champion. As of December 2024, BoxRec ranks Calzaghe as the 37th greatest fighter of all time, pound for pound, as well as the second-greatest European boxer of all time.
In 2007, Calzaghe won the BBC Sports Personality of the Year Award, making him the first Welsh winner of this award since David Broome in 1960. Calzaghe was inducted into the International Boxing Hall of Fame in 2014. He was nicknamed the "Pride of Wales" and the "Italian Dragon".
