Constantine "Cus" D'Amato (January 17, 1908 – November 4, 1985) was an American boxing trainer. He trained two of boxing heavyweight champions, Mike Tyson and Floyd Patterson.

He once said, "The hero and the coward both feel the same thing, but the hero uses his fear, projects it onto his opponent, while the coward runs. It's the same thing, fear, but it's what you do with it that matters."