William George Zane Jr. is an American actor. His breakthrough role was in the 1989 Australian film Dead Calm, a performance that earned him a nomination for the Chicago Film Critics Association Award for Most Promising Actor. He has since appeared in numerous films and television series, notably playing the main antagonist Caledon Hockley in the epic romance disaster film Titanic (1997), for which he was nominated for a Screen Actors Guild Award.

Dead Calm is a 1989 Australian psychological thriller film directed by Phillip Noyce and starring Sam Neill, Nicole Kidman and Billy Zane. The screenplay by Terry Hayes was based on the 1963 novel of the same name by Charles Williams. Filmed around the Great Barrier Reef, the plot focuses on a married couple, who, after tragically losing their son, are spending some time isolated at sea, when they come across a stranger who has abandoned a sinking ship.