Thomas "Tom" Chisum is a minor character in the 1978 movie, Grease.
Tom is one of Rydell's star athletes and is captain of Rydell's football team. He is very attracted to Sandy Olsen and dates her briefly in the film, but later begins a relationship with Patty Simcox. He was played by Lorenzo Lamas in the movie, by Jon Robert Hall in the 2016 live performance, and by Matthew Lloyd (alongside his co-star and singer, Lauren Haine whom played Lloyd's love interest) in the 2017 play version.
He is a handsome, charming teenaged American male.