Heaviest twins (male)
Billy Leon and Benny Loyd McCrary
337/328 kilogram(s)
Estados Unidos ()
Restrição de idade: Os pedidos para este título de recorde só serão aceitos se o candidato tiver 16 anos de idade ou mais.

Billy Leon (1946–79) and Benny Loyd (1946 - 2001) McCrary, alias McGuire (USA), were normal in size until the age of six. In November 1978, Billy and Benny weighed 337 kg (743 lb or 53 st 1 lb) and 328 kg (723 lb or 51 st 9 lb) respectively, and each had waists measuring 2.13 m (84 in).

As professional tag wrestling performers they were billed at weights up to 349 kg (770 lb or 55 st).

Born 7 December 1946, Billy died at Niagara Falls, Ontario, Canada of heart failure, after a fall from a mini bike, on 13 January 1979. Benny died of heart failure on 26 March 2001.