Jack

Jack may refer to:

Jack (name), originally a nickname for John (including list of people with that name)
Jack (device), a device used to lift heavy objects
Jack (connector), an electrical connector
- Jack plug, a common audio connector
Jack (playing card), the lowest face card in a deck of playing cards
Jack (mascot), the clown mascot of American restaurant chain Jack In The Box
Jack (human modeling), a human modeling and simulation system
Jack (film), a 1996 American film directed by Francis Ford Coppola and starring Robin Williams
Jack (tree), a relative of the mango
Jack (Tekken), a series of robots in the Tekken series
Jack (Book of Words), a series by J.V. Jones
Jacks, playground game for children
Jacking, a form of dance popular in the late 1980s
JACK Audio Connection Kit, a computer sound server
Jack FM, a radio format in Canada and the United States
Jack (cat), a cat on Blue Peter.
Jack (webcomic), an online adult furry comic by David Hopkins
Jack, the term for a male donkey

Jack may also be used for:

Jack plane, a tool for smoothing wood
Jack Daniel's, a brand of whiskey
Jackfruit, a species of tree native to the East Indies
Sailor
Several fish:
- freshwater pike, green pike or pickerel
- large California rockfish
- the Carangidae family
- the Coho salmon
Jacks, maritime flags flown from the bow of a ship

In names and aliases:

Jack the Ripper (19th century), alias given to an unidentified serial killer of Victorian England
Spring Heeled Jack (19th century), a legendary figure of Victorian England
Jack the Stripper (mid-20th century), nickname given to an unknown serial killer of London, England who stripped victims

See also