Antonio "Nino" Castellini (14 April 1951 – 26 August 1976) was an Italian boxer who won a bronze medal at the 1971 Mediterranean Games in the light-middleweight category.

Next year he competed at the Munich Olympics, but was eliminated in the first round by the eventual silver medalist Wiesław Rudkowski.

[1] After the Olympics he turned professional, and won a national super welterweight title in 1974–1976.

[2] He died in a motorcycle incident, aged 25.

This biographical article related to an Italian boxer is a stub.