Jack may refer to:

Places

Jack, Alabama Jack is an unincorporated community in Coffee County, Alabama, United States. Jack is located on Alabama State Route 87, north-northeast of Elba Elba ( it, isola d'Elba, ; la, Ilva) is a Mediterranean island in Tuscany, Italy, from t ...

, US, an unincorporated community * Jack, Missouri, US, an unincorporated community *

Jack County, Texas Jack County is a county located in the north central part of the U.S. state of Texas. As of the 2020 census, its population was 8,472. Its county seat is Jacksboro. The county was created in 1856 and organized the next year. It is named for ...

, a county in Texas, USA

People and fictional characters

Jack (given name) Jack is a given name, a diminutive of John; alternatively, it may be derived from Jacques, the French form of James or Jacob. Since the late 20th century, Jack has become one of the most common names for boys in many English-speaking countries ...

, 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 Jack the Ripper was an unidentified serial killer active in and around the impoverished Whitechapel district of London, England, in the autumn of 1888. In both criminal case files and the contemporaneous journalistic accounts, the killer wa ...

, an unidentified British serial killer active in 1888 *

Wolfman Jack Robert Weston Smith (January 21, 1938July 1, 1995), known as Wolfman Jack, was an American disc jockey active from 1960 till his death in 1995. Famous for his gravelly voice, he credited it for his success, saying, "It's kept meat and potatoes ...

(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

Animals and plants

Fish

Carangidae The Carangidae are a family of ray-finned fish which includes the jacks, pompanos, jack mackerels, runners, and scads. It is the largest of the six families included within the order Carangiformes. Some authorities classify it as the only famil ...

generally, including: ** Almaco jack ** Amberjack ** Bar jack ** Black jack (fish) **

Crevalle jack The crevalle jack (''Caranx hippos''), also known as the common jack, black-tailed trevally, couvalli jack, black cavalli, jack crevale, or yellow cavalli is a common species of large marine fish classified within the jack family, Carangidae. T ...

** Giant trevally or ronin jack **

Jack mackerel Jack mackerels or saurels are marine fish in the genus ''Trachurus'' of the family Carangidae. The name of the genus derives from the Greek words ''trachys'' ("rough") and ''oura'' ("tail"). Some species, such as ''T. murphyi'', are harvested in ...

** Leather jack ** Yellow jack * Coho salmon, males called "jacks" *''

Esox ''Esox'' is a genus of freshwater fish commonly known as pike or pickerel. It is the type genus of the family Esocidae. The type species of the genus is '' Esox lucius'', the northern pike. ''Esox'' has been present in Laurentia (which lat ...

'' (northern pike), young called "jacks" *"Jackfish" or "jack", a western Canadian name for

northern pike The northern pike (''Esox lucius'') is a species of carnivorous fish of the genus '' Esox'' (the pikes). They are typical of brackish and fresh waters of the Northern Hemisphere (''i.e.'' holarctic in distribution). They are known simply as a ...

Mammals

Jack (baboon) Jack (died 1890) was a chacma baboon who attained some fame for acting as an assistant to a disabled railway signalman in South Africa. History Jack was the pet and assistant of double leg amputee signalman James Wide, who worked for the ...

, a baboon who was the assistant to a disabled railway signalman in South Africa *

Jack (cat) Jack (c. 2005 – November 6, 2011) was a Norwegian forest cat, owed by Karen Pascoe, who was lost on August 25, 2011 by American Airlines baggage handlers at John F. Kennedy International Airport before Hurricane Irene. A campaign called "Jac ...

, a Norwegian forest cat who was lost by American Airlines baggage handlers * Jack or jackass, a male

donkey The domestic donkey is a hoofed mammal in the family Equidae, the same family as the horse. It derives from the African wild ass, ''Equus africanus'', and may be classified either as a subspecies thereof, ''Equus africanus asinus'', or as a ...

(''Equus africanus'')

Plants

Jack (tree) ''Mangifera caesia'' is a species of flowering plant in the cashew family, Anacardiaceae. Known in English as jack or white mango, among other names. It belongs to the same genus as the mango and is widely cultivated in areas of Indonesia, Mal ...

(''Mangifera caesia''), a relative of the mango *

Jack pine Jack pine (''Pinus banksiana'') is an eastern North American pine. Its native range in Canada is east of the Rocky Mountains from the Mackenzie River in the Northwest Territories to Cape Breton Island in Nova Scotia, and the north-central ...

(''Pinus banksiana''), a North American conifer

Arts, entertainment, and media

Films

* ''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) A Jack or Knave, in some games referred to as a bower, is a playing card which, in traditional French and English decks, pictures a man in the traditional or historic aristocratic or courtier dress, generally associated with Europe of the 16th or ...

, the lowest-ranking face card in some types of deck * Jack, a target ball used in games such as

bowls Bowls, also known as lawn bowls or lawn bowling, is a sport in which the objective is to roll biased balls so that they stop close to a smaller ball called a "jack" or "kitty". It is played on a bowling green, which may be flat (for "flat-gr ...

* 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

Music

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 (hero), an archetypal Cornish and English hero and stock character *

Jack FM Jack FM is a radio network brand, licensed by Sparknet Communications, with the exception of the European Union where it is licensed by Oxis Media. It plays an adult hits format, in most cases not using DJs. Format characteristics Stations ...

, a radio format and brand

Military

* Jack (flag), a national maritime flag flown by warships, e.g., **

Union Jack The Union Jack, or Union Flag, is the '' de facto'' national flag of the United Kingdom. Although no law has been passed making the Union Flag the official national flag of the United Kingdom, it has effectively become such through precedent. ...

* 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) The Jack human simulation system was developed at the Center for Human Modeling and Simulation at the University of Pennsylvania in the 1980s & 1990s under the direction of Professor Norman Badler. Conceived as an ergonomic assessment and virtual h ...

, a human modeling and simulation system *

JACK Audio Connection Kit JACK Audio Connection Kit (or JACK; a recursive acronym) is a professional sound server API and pair of daemon implementations to provide real-time, low-latency connections for both audio and MIDI data between applications. JACK was developed b ...

, a computer sound server * JACK Intelligent Agents, a multi-agent platform written in Java

Electrical interfaces

Electrical connector Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection between ...

, or "wall jack", a socket (often panel-mounted) intended to accept a plug *

Phone connector (audio) A phone connector, also known as phone jack, audio jack, headphone jack or jack plug, is a family of electrical connectors typically used for analog audio signals. A plug, the male connector, is inserted into the jack, the female connect ...

, 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 jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. The most common form is a car jack, floor jack o ...

, a device used to lift heavy objects **

Jackscrew A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderately and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supp ...

, a device used to support heavy objects at various heights **

Pallet jack A pallet jack, also known as a pallet truck, pallet pump, pump truck, hand truck, scooter, dog, or jigger is a tool used to lift and move pallets. Pallet jacks are the most basic form of a forklift and are intended to move pallets within a ware ...

, a device with two forks used to lift and move pallets; the powered version is known as a

forklift A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various c ...

** 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 jack plane is a general-purpose woodworking bench plane, used for dressing timber down to size in preparation for truing and/or edge jointing. It is usually the first plane used on rough stock, but for rougher work it can be preceded by the ...

, a tool for smoothing wood *

Roasting jack A roasting jack is a machine which rotates meat roasting on a spit. It can also be called a spit jack, a spit engine or a turnspit, although this name can also refer to a human turning the spit, or a turnspit dog. Cooking meat on a spit dates ...

, a device for turning a spit

Other uses

* Jack (mascot), the mascot of Jack in the Box restaurants *

Cracker Jack Cracker Jack is an American brand of snack food that consists of molasses-flavored, caramel-coated popcorn, and peanuts, well known for being packaged with a prize of trivial value inside. The Cracker Jack name and slogan, "The More You Eat The ...

and Cracker Jack'D, snack foods *

Jack Daniel's Jack Daniel's is a brand of Tennessee whiskey. It is produced in Lynchburg, Tennessee, by the Jack Daniel Distillery, which has been owned by the Brown–Forman Corporation since 1956. Packaged in square bottles, Jack Daniel's "Black Label" ...

, 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 British Discount supermarket chain * Monterey Jack, a variety of cheese *

Sailor A sailor, seaman, mariner, or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship. The profession of the ...

, "jack" in obsolete usage * Sailor Jack, he and his dog Bingo are the mascots for Cracker Jack snack food * Yukon Jack (liqueur), a Canadian whisky with honey * Jack Tar, term for a sailor