Jack

Jack may refer to:

Places

 * Jack, Alabama, US, an unincorporated community
 * Jack, Missouri, US, an unincorporated community
 * Jack County, Texas, a county in Texas

People and fictional characters

 * Jack (given name), a male given name, including a list of people and fictional characters with the name
 * Jack (surname), including a list of people with the surname
 * Jack (Tekken), multiple fictional characters in the fighting game series Tekken
 * Jack the Ripper, an unidentified British serial killer active in 1888
 * Wolfman Jack (1938–1995), a stage name of American disk jockey Robert Weston Smith
 * New Jack, a stage name of Jerome Young (1963-2021), an American professional wrestler
 * Spring-heeled Jack, a creature in Victorian-era English folklore
 * Jack (hero), an archetypal Cornish and English hero and stock character

Fish

 * Carangidae generally, including:
 * Almaco jack
 * Amberjack
 * Bar jack
 * Black jack (fish)
 * Crevalle jack
 * Giant trevally or ronin jack
 * Jack mackerel
 * Leather jack
 * Yellow jack
 * Coho salmon, males called "jacks"
 * Esox (northern pike), young called "jacks"
 * "Jackfish" or "jack", a western Canadian name for northern pike

Mammals

 * Jack (baboon), a baboon who was the assistant to a disabled railway signalman in South Africa
 * Jack (cat), a Norwegian forest cat who was lost by American Airlines baggage handlers
 * Jack or jackass, a male donkey (Equus africanus)

Plants

 * Jack (tree) (Mangifera caesia), a relative of the mango
 * Jack pine (Pinus banksiana), a North American conifer
 * Jackfruit (Artocarpus heterophyllus)

Films

 * Jack (1925 film), a French silent film directed by Robert Saidreau
 * Jack (1996 film), a film starring Robin Williams
 * Jack (2004 film), a film starring Anton Yelchin and Stockard Channing
 * Jack (2013 film), a television film starring Rick Roberts and Sook-Yin Lee
 * Jack (2014 film), a German film
 * Jack (2015 film), an Austrian film

Games

 * Jack (playing card), the lowest-ranking face card in some types of deck
 * Jack, a target ball used in games such as bowls
 * Jack, a playing piece used in the children's game called jacks

Literature

 * Jack (Homes novel), a 1990 novel by A. M. Homes
 * Jack (Lundell novel), a 1976 novel by Ulf Lundell
 * Jack (Robinson novel), a 2020 novel by Marilynne Robinson

Periodicals

 * Jack (Italian magazine), an Italian-language technology magazine
 * Jack (magazine), an English-language British lad mag

Artists and groups

 * Jack (band), a British independent pop group signed to the Too Pure label
 * Jack & Jack, an American an American pop-rap duo
 * Jack (Vietnamese singer) (born 1997), a Vietnamese pop star

Albums

 * Jack (album), a 2010 studio album by John Farnham
 * Jack (EP), a 1991 EP by Moose
 * Jack, a 1984 album by Bone Orchard
 * J.A.C.K., a 2013 studio album by Forever the Sickest Kids

Songs

 * "Jack" (song), a 2013 song by Breach
 * "Jack" (1980), a B-side song to "Tell The Children" by Sham 69 on the album Kings & Queens
 * "Jack" (1984), a song and single by Bone Orchard
 * "Jack" (2001), a song by Iced Earth from their album Horror Show (2001)
 * "Jack" (1983), a song and single by Machinations (band)
 * "Jack" (1983), a song and single by Mighty Gabby
 * "Jack", song by Pixie Lott from the Turn It Up (2009) album
 * "The Jack", a song by AC/DC originally on the album T.N.T. (1975)

Television

 * Jack (TV series), a 3D-animated series broadcast by TVOntario
 * Jack TV, a general entertainment channel in the Philippines (cable)

Other uses in arts, entertainment, and media

 * Jack FM, a radio format and brand

Military

 * Jack (flag), a national maritime flag flown by warships, e.g.,
 * Union Jack
 * Jack, the Allied code-name of the Japanese Mitsubishi J2M fighter of World War II

Computing and software

 * Jack (CAD software), a 3-D ergonomics and human factors CAD package
 * Jack (human modeling), a human modeling and simulation system
 * JACK Audio Connection Kit, a computer sound server
 * JACK Intelligent Agents, a multi-agent platform written in Java

Electrical interfaces

 * Electrical connector, or "wall jack", a socket (often panel-mounted) intended to accept a plug
 * Phone connector (audio), commonly known as "audio jack", or "jack plug", or "phone jack"
 * Registered jack, a standardized telecommunication network interface for connecting voice and data equipment

Mechanical tools

 * Jack (device), a device used to lift heavy objects
 * Jackscrew, a device used to support heavy objects at various heights
 * Pallet jack, a device with two forks used to lift and move pallets; the powered version is known as a forklift
 * Strand jack, used in construction and engineering, and is capable of lifting hundreds of tonnes
 * Boot jack, a device for removing boots
 * Jack plane, a tool for smoothing wood
 * Roasting jack, a device for turning a spit

Other uses

 * Jack Box, the mascot of Jack in the Box restaurants
 * Cracker Jack and Cracker Jack'D, snack foods with the fictional Sailor Jack as a mascot
 * Jack Daniel's, a Tennessee whiskey distillery, whose product is sometimes referred to as "Jack"
 * Jack of plate or jack, a type of armor
 * Jack's (store), a defunct British discount supermarket chain owned by Tesco
 * Monterey Jack, a variety of cheese
 * Quarter-jack or jack, an animated figure which strikes the bell of a clock
 * Yukon Jack (liqueur), a Canadian whisky with honey
 * Jack Tar or "jack", a term for a sailor