Cruiserweight is a weight class in boxing between light heavyweight and heavyweight. Before the advent of the current cruiserweight class, "light heavyweight" and "cruiserweight" were sometimes used interchangeably in the United Kingdom.

The current weight limit for the division is 200 pounds (14 stone 4 pounds / 90.7kg). When originally established, the weight limit was 190 pounds (86.2kg). The division was established in order to accommodate smaller heavyweight boxers who could not compete with the growing size of boxers in that division. While many great heavyweight champions (such as Rocky Marciano and Joe Louis) weighed around 190 pounds in their career, during the 1970s it became fairly standard that heavyweight boxers weighed 220 pounds or 230 pounds. It was felt by many boxing authorities that asking men weighing between 176 pounds and 190 pounds to fight these larger men was unfair.

The WBC was the first boxing organization to recognize the cruiserweight division when it sanctioned a bout between Marvin Camel and Mate Parlov on December 8, 1979, for their version of the title. That fight was a draw, but in the rematch in March 1980 Camel won and became the first cruiserweight champion. In 1982 the World Boxing Association recognized Ossie Ocasio as their first cruiserweight champion when he defeated South African Robbie Williams (although at that time the WBA called the division "junior heavyweight"). The International Boxing Federation followed suit in 1983 when it matched former WBC champion Marvin Camel against Rick Sekorski for their inaugural title. Camel won and became the first IBF cruiserweight champion.

David Deron Haye (born 13 October 1980) is a British professional boxer from England.

Haye is the former WBA heavyweight champion. He is also the former unified world cruiserweight champion, holding the WBA, WBC, WBO, and The Ring cruiserweight titles, and the former European cruiserweight champion.

Haye started his ambition and passion for boxing at old-school boxing gym Fitzroy Lodge Boxing Club in Lambeth, South London, where he quickly impressed and confidently won his first amateur bouts.

In 1999, 18-year-old Haye participated at the world amateur championships in Houston, Texas, USA at light-heavyweight but was eliminated by experienced American Michael Simms early in the contest.

At the 2001 World Amateur Boxing Championships in Belfast, Northern Ireland he fought in the heavyweight 201 lb division where he beat world class Sebastian Köber to reach the final where he gave Odlanier Solís a standing eight count before being stopped by the Cuban in round three, and taking the silver medal.