<P> Jack Skellington is a character and the main protagonist of the 1993 film The Nightmare Before Christmas . Jack is the `` Pumpkin King '' of Halloween Town , a fantasy world based solely on the Halloween holiday . Jack is voiced by Chris Sarandon . Danny Elfman provided Jack 's singing voice in the film , although Sarandon has sung as Jack in subsequent productions . </P>
who plays jack skellington in nightmare before christmas
Chris Sarandon