Big Chuck Smith was an Irish heavyweight boxer that once fought Rocky Balboa. In the 1976 film, Rocky, Apollo Creed's trainer, Tony "Duke" Evers, suggested that Apollo should fight him. Creed didn't agree, though, saying he was "too dull".

He appears in the 1988 Rocky arcade video game and 2002's Rocky Legends video game. Chuck is described as a formidable fighter and relatively quick for his size, with explosive power in both fists "with a rock-hard chin". He was one of the many heard but not seen fighters from the introduction to Rocky III during the fight montage that quickly had it's clock cleaned by Clubber Lang.

He was the number one challenger for the world title from 1975 to 1980, but he retired 1981, a year after his loss to Rocky Balboa. He was only thirty years old. Smith went on to coach rising prospect Brendan Doyle.