Jack

Jack could refer to:


 * Characters
 * Jack the Ripper, a killer in London, England in the late 19th century
 * Redjac, a parasitic organism that fed on fear
 * Jack (20th century), inhabitant of Carbon Creek, Pennsylvania in the mid-20th century
 * Jack (soap opera), a soap opera character in the late 20th century
 * Jack (23rd century), an ancestor of Harry Kim in the 23rd century
 * Jack Crusher, Beverly Crusher's husband, KIA 2354
 * Jack (24th century), the genetically-engineered Human in the 24th century
 * Jack London, an author in the late 19th/early 20th centuries
 * Jack Palance, a fairly well-known film actor
 * Jack Wilson, a character from the movie Shane, played by Jack Palance


 * Other references
 * Double jack, a card game
 * Jack-in-the-box, a children's toy, or a hidden subroutine in a holodeck program
 * Jack Daniel's, a brand of Tennessee whiskey.

Jack