# 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

## Animals and plants
### 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)

## Arts, entertainment, and media
### 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 (Daudet novel), an 1876 novel by Alphonse Daudet
* Jack (Lundell novel), a 1976 novel by Ulf Lundell
* Jack (Homes novel), a 1990 novel by A. M. Homes
* 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

### Music
#### Artists and groups

* Jack (band), a British independent pop group signed to the Too Pure label
* Jack & Jack, 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
* "Jack" (2023), a song by Hardy from The Mockingbird & the Crow
* "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

## Technology
### 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