Men’s

Light flyweight

The light flyweight category featured at the Olympics for the first time in 1968, when the Games were held in Mexico City. It increased the total number of weight classes to 11.

Flyweight

First contested at the 1904 Olympic Games in St Louis, the flyweight division's inaugural winner was the United States' George Finnegan. Cuba has won gold at three of the last five Games thanks to Maikro Romero at Atlanta 1996, Yuriorkis Gamboa at Athens 2004 and Robeisy Ramírez at London 2012. 

Bantamweight

Great Britain's Luke Campbell is the reigning bantamweight Olympic champion having defeated Ireland's John Joe Nevin in the London 2012 final. Like in the flyweight class, Cuba has been the dominant force in recent times, claiming top honours at Barcelona 1992 through Joel Casamayor, and at Sydney 2000 and Athens 2004 courtesy of back-to-back winner Guillermo Rigondeaux. 

Lightweight

Vasyl Lomachenko topped the lightweight podium for Ukraine at London 2012, fending off the challenge of Han Soon-Chul of South Korea. One particularly notable winner of this title is the United States' Oscar De La Hoya, who, having won the gold medal at Barcelona 1992, went on to win 10 world titles in six different professional weight classes.  

Light welterweight

The light welterweight class was introduced in 1950 and made its Olympic debut at the 1952 Games in Helsinki, where the United States’ Charles Adkins struck gold.

Welterweight

Kazakhstan have won welterweight gold at each of the last three Olympic Games thanks to Bakhtiyar Artayev at Athens 2004, Bakhyt Sarsekbayev at Beijing 2008 and Serik Sapiyev at London 2012. 

Middleweight

Following three successive victories for Cuba at Barcelona 1992, Atlanta 1996 and Sydney 2000, the middleweight gold medal has gone to a different country at each of the last three editions of the Olympic Games. Russia's Gaydarbek Gaydarbekov prevailed at Athens 2004 after which Britain's James De Gale and Japan's Ryota Murata triumphed at Beijing 2008 and London 2012 respectively. 

Light heavyweight

The light heavyweight class - between 75 kilograms and 81kg - was introduced in 1950 and first featured in the Olympics at the 1952 Games in Helsinki, where the United States’ Norvel Lee topped the podium. Eight years later at the Rome 1960 Games, Lee's compatriot Cassius Clay claimed gold at the expense of Poland's Zbigniew Pietrzykowski. The man who became to be known as Muhammad Ali went on to win the world heavyweight title on three occasions in 1964, 1974 and 1978 and is widely considered as the greatest boxer of all time. 

Heavyweight

The United States' Joe Frazier and George Foreman are two of the stand-out names in the Olympic heavyweight roll of honour with the former taking the title at Tokyo 1964 and the latter at Mexico City 1968. Both went on to become the world heavyweight champion and encountered the great Muhammad Ali along the way in some of the most memorable bouts in the history of boxing. Two Cubans also have a hat-trick of titles to their names with Teófilo Stevenson winning at Munich 1972, Montreal 1976 and Moscow 1980, and Félix Savón coming out on top at Barcelona 1992, Atlanta 1996 and Sydney 2000. 

Super heavyweight

The super heavyweight category was included for the first time at the Olympic Games in Los Angeles in 1984 when the wearing of headguards was made compulsory. Lennox Lewis ranks among the most famous gold medallists, topping the podium at Seoul 1988 as a representative of Canada. Lewis, who holds dual British and Canadian citizenship, beat the United States' Riddick Bowe to top honours before embarking on a professional career that would see him become the undisputed world heavyweight champion. 

Women’s

Flyweight

Britain’s Nicola Adams became the first female fighter to win an Olympic gold medal when she defeated China’s Ren Cancan in the flyweight final at London 2012. The United States' Marlen Esparza and India's Mary Kom shared the third step of the podium. 

Lightweight 

Ireland’s Katie Taylor beat Russia’s Sofya Ochigava to lightweight gold at London 2012 with Tajikistan’s Mavzuna Chorieva and Brazil’s Adriana Araujo taking bronze.

Middleweight

Russia also had to settle for a silver medal at London 2012 in the middleweight division as Nadezda Torlopova lost out to the United States' Claressa Shields in the final. Kazakhstan's Marina Volnova and China's Li Jinzi came away with the bronzes.