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. Jack has a post office A post office is a public facility and a retailer that provides m ...

, 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

People and fictional characters

Jack (given name) Jack is a male given name of English origin, originally a diminutive of John (given name), John. Alternatively it may commonly be a diminutive of Jacob (name), Jacob, its French variant Jacques, or given names like Jackson (name), Jackson which ...

, a male given name, including a list of people and fictional characters with the name *

Jack (surname) Jack has been used as a surname, primarily deriving from the Middle English and Older Scottish personal names such as Jak, Jagge and Jakke, in turn derived from pet forms of John, but perhaps in some cases Jack arose in Middle English from the Old ...

, including a list of people with the surname *

Jack (Tekken) Bandai Namco Entertainment's '' Tekken'' media franchise is known for its diverse cast of characters hailing from various nationalities, all coming together to compete in the King of Iron Fist tournament. In addition to the human characters, ' ...

, multiple fictional characters in the fighting game series ''Tekken'' *

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

, 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 for over three decades. He was famous for his gravelly voice, and credited it with his success, saying, "It's kept meat and potatoes on ...

(1938–1995), a stage name of American disk jockey Robert Weston Smith *

New Jack Jerome Young (January 3, 1963 – May 14, 2021) was an American professional wrestler better known by his ring name New Jack. He was best known for his time with Extreme Championship Wrestling (ECW), where he became notorious for his willingn ...

, a stage name of Jerome Young (1963–2021), an American professional wrestler *

Spring-heeled Jack Spring-heeled Jack was an entity in English folklore of the Victorian era. The first claimed sighting of Spring-heeled Jack was in 1837. Later sightings were reported all over the United Kingdom and were especially prevalent in suburban Lond ...

, a creature in Victorian-era English folklore *

Jack (hero) __NOTOC__ Jack is an English hero and archetypal stock character appearing in multiple legends, fairy tales, and nursery rhymes. Examples of Jack tales Some of the most famous Jack tales are "Jack and the Beanstalk", " Jack Frost", "Jack the ...

, an archetypal Cornish and English hero and stock character

Animals and plants

Fish

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

generally, including: **

Almaco jack The longfin yellowtail (''Seriola rivoliana''), also known as the almaco or silvercoat jack, deep-water, falcate, European or highfin amberjack, rock salmon, longfin or yellow kingfish, is a game fish of the family Carangidae; they are in the sa ...

Amberjack Amberjacks are Atlantic and Pacific Ocean, Pacific fish in the genus ''Seriola'' of the family Carangidae. They are widely consumed across the world in various cultures, most notably for Pacific amberjacks in Japanese cuisine; they are most oft ...

** Bar jack ** Black jack (fish) ** Crevalle jack **

Giant trevally The giant trevally (''Caranx ignobilis''), also known as the lowly trevally, barrier trevally, ronin jack, giant kingfish, or ''ulua'', is a species of large ocean, marine fish classified in the jack Family (biology), family, Carangidae. The gian ...

or ronin jack **

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

** Leather jack **

Yellow jack The yellow jack (''Carangoides bartholomaei''), also known as coolihoo, is a species of marine (ocean), marine fish in the jack family, Carangidae. It is one of only two representatives of its genus present in the Atlantic Ocean, inhabiting wate ...

Coho salmon The coho salmon (''Oncorhynchus kisutch;'' Karuk: achvuun) is a species of anadromous fish in the salmon family (biology), family and one of the five Pacific salmon species. Coho salmon are also known as silver salmon (or "silvers") and is often ...

, 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 (biology), family Esocidae. The type species of the genus is ''Esox lucius'', the northern pike. ''Esox'' have a fossil record exten ...

'' (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'' (pikes). They are commonly found in brackish water, moderately salty and fresh waters of the Northern Hemisphere (''i.e.'' holarctic in distribution). T ...

Mammals

Jack (baboon) Jack (died 1890) was a Chacma baboon who was an assistant to a disabled railway signalman, James Wide, in South Africa. Biography Jack was the pet and assistant of double leg amputee signalman James Wide, who worked for the Cape Town–P ...

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

Jack (cat) Pet travel is the process of traveling with or transporting pets. Pet carriers like cat carriers and dog crates confine and protect pets during travel. Animal stress Pets may experience stress and anxiety from unfamiliar situations and location ...

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

donkey The donkey or ass is a domesticated equine. It derives from the African wild ass, ''Equus africanus'', and may be classified either as a subspecies thereof, ''Equus africanus asinus'', or as a separate species, ''Equus asinus''. It was domes ...

(''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, Mala ...

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

Jack pine Jack pine (''Pinus banksiana''), also known as grey pine or scrub pine, is a North American pine. Distribution and habitat Its native range in Canada is east of the Rocky Mountains from the Mackenzie River in the Northwest Territories t ...

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

Jackfruit The jackfruit or ''nangka'' (''Artocarpus heterophyllus'') is a species of tree in the Common fig, fig, mulberry, and breadfruit family (Moraceae). The jackfruit is the largest tree fruit, reaching as much as in weight, in length, and in d ...

(''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 * ''Jack'' (2025 film), an Indian film

Games

Jack (playing card) A Jack or Knave, in some games referred to as a Bower, in Tarot card games as a Valet, is a playing card which, in traditional French and English decks, pictures a man in the traditional or historic aristocratic or courtier dress generally assoc ...

, 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 players try to roll their ball (called a bowl) closest to a smaller ball (known as a "jack" or sometimes a "kitty"). The bowls are shaped (biased), so that they follow a curve ...

* 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 Jack & Jack are an American pop-rap duo from Omaha, Nebraska, consisting of Jack Johnson and Jack Gilinsky, based in Los Angeles, California. After success via the social media app Vine, the duo turned to careers as musicians. Their 2014 single " ...

, 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. ''J.A.C.K.'' is the third studio album by American pop punk band Forever the Sickest Kids. It is their first release through Fearless Records since their former label, Universal Motown Records, Universal Motown, was shut down, which resulted in ...

'', 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) Machinations are an Australian synth-pop band which formed in 1980. They reached the top 20 on the Kent Music Report albums chart with ''Big Music (Machinations album), Big Music'' in 1985. Their top 30 hits on the related singles cha ...

* "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 Jack TV (capitalized as JACK TV) is an online web portal owned by Solar Entertainment Corporation and based in Mandaluyong, Metro Manila. It was known as a Philippine pay television network mainly offering multi-genre programming from the U ...

, a general entertainment channel in the Philippines (cable)

Other uses in arts, entertainment, and media

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

, a radio format and brand

Military

Jack (flag) A jack is a flag flown from a short jackstaff at the Bow (ship), bow (front) of a vessel, while the Ensign (flag), ensign is flown on the stern (rear). Jacks on bowsprits or foremasts appeared in the 17th century. A country may have different ...

, 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. The Union Jack was also used as the official flag of several British colonies and dominions before they adopted their own national flags. It is sometimes a ...

* Jack, the Allied code-name of the Japanese

Mitsubishi J2M The Mitsubishi J2M ''Raiden'' (雷電, "Lightning Bolt") is a single-engined, land-based fighter aircraft used by the Imperial Japanese Navy Air Service in World War II. Its Allied reporting name was Jack. Design and development The J2M was d ...

fighter of World War II

Technology

Computing and software

Jack (CAD software) 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 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 by ...

, a computer sound server *

JACK Intelligent Agents JACK Intelligent Agents is a framework in Java for multi-agent system development. JACK Intelligent Agents was built by Agent Oriented Software Pty. Ltd. (AOS) and is a third generation agent platform building on the experiences of the Procedural ...

, 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 is a family of Cylinder, cylindrically-shaped electrical connectors primarily for Analog signal, analog audio signals. Invented in the late 19th century for Telephone switchboard, tele''phone'' switchboards, the phone conne ...

, commonly known as "audio jack", or "jack plug", or "phone jack" *

Registered jack A registered jack (RJ) is a standardized telecommunication network interface device, network interface for connecting voice and data equipment to a computer service provided by a local exchange carrier or long distance carrier. Registered inter ...

, 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 ...

, 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 moderate and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable suppor ...

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

Pallet jack A pallet jack, also known as a pallet truck or pallet pump, is a tool used to lift and move pallets. Pallet jacks are the most basic form of a forklift and are intended to move palletized loads within warehouses, distribution centers, retail s ...

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

forklift A forklift (also called industrial truck, 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 c ...

** Strand jack, used in construction and engineering, and is capable of lifting hundreds of tonnes *

Boot jack A boot jack, sometimes known as a boot pull, is a small tool that aids in the removal of boots. It consists of a U-shaped mouth that grips the heel of the boot, and a flat area to which weight can be applied with the opposite foot. To operate ...

, a device for removing boots *

Jack plane 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, incl ...

, 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 Box, 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 balls and peanuts, well known for being packaged with a prize of trivial value inside. The Cracker Jack name and slogan, "The More You E ...

and Cracker Jack'D, snack foods with the fictional Sailor Jack as a mascot *

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

, a Tennessee whiskey distillery, whose product is sometimes referred to as "Jack" *

Jack of plate A jack of plate is a type of armour made up of small iron plates sewn between layers of felt and canvas. They were commonly referred to simply as a "jack" (although this could also refer to any outer garment). This type of armour was used by co ...

or jack, a type of armor * Jack's (store), a defunct British discount supermarket chain owned by Tesco *

Monterey Jack Monterey Jack, sometimes shortened to Jack, is a Californian white, semi-hard cheese made using cow's milk, with a mild flavor and slight sweetness. Originating in Monterey, on the Central Coast of California, the cheese has been called "a vest ...

, a variety of cheese * Quarter-jack or jack, an animated figure which strikes the bell of a clock *

Yukon Jack (liqueur) Yukon Jack is a liqueur, made from Canadian whisky and honey. It is named after the pioneer Leroy Napoleon 'Jack' McQuesten.Munsey, C. (2004, Summer). “YUKON JACK” Part I. ''Bottles and'' Extras. ''15''(3), 14.-16. In Canada it is 40% alcoho ...

, a Canadian whisky with honey *

Jack Tar Jack Tar (also Jacktar, Jack-tar or Tar) is a common English language, English term that was originally used to refer to sailor, seamen of the British Merchant Navy, Merchant Navy or the Royal Navy, particularly during the British Empire. By World ...

or "jack", a term for a sailor