Q, or q, is the seventeenth letter of the English alphabet. Q may also refer to:

People

* Q, pseudonym of Sir

Arthur Quiller-Couch Sir Arthur Thomas Quiller-Couch (; 21 November 186312 May 1944) was a Cornish people, British writer who published using the pen name, pseudonym Q. Although a prolific novelist, he is remembered mainly for the monumental publication ''The Oxfor ...

, the Cornish writer * Q, pseudonym used by the originator of QAnon, an American far-right conspiracy theory * Q, pseudonym of Quentin Elias in his appearances in gay porn site ''Randy Blue'' * Q, stage name for Qurram Hussain of JoSH * Q, stage name for Q Marsden * Q, stage name for Robert Severson (born 1996) * Q, nickname for NBA assistant coach Bruce Fraser * Q, or Q Martel, nicknames of

Giffard Le Quesne Martel Lieutenant-General Sir Giffard Le Quesne Martel (10 October 1889 – 3 September 1958) was a British Army officer who served in both the First and Second World Wars. Familiarly known as "Q Martel" or just "Q", he was a pioneering British mili ...

* Q, nickname for

Joel Quenneville Joel Norman Quenneville (born September 15, 1958) is a Canadian–American professional ice hockey coach and former player who is the head coach for the Anaheim Ducks of the National Hockey League (NHL). Nicknamed "Coach Q", he is second in NHL c ...

* Q, nickname of Qaushiq Mukherjee, an Indian film director * Q, nickname of

Quincy Jones Quincy Delight Jones Jr. (March 14, 1933 – November 3, 2024) was an American record producer, composer, arranger, conductor, trumpeter, and bandleader. Over the course of his seven-decade career, he received List of awards and nominations re ...

* Q, nickname of American basketball player Quintin Dailey (1961–2010) * Q, nickname of former American football player Anquan Boldin * Q, main dancer and vocalist of South Korean boy band

The Boyz Boyz or The Boyz may refer to: Music Bands *The Boyz (German band), a German boy band of the 1990s * The Boyz (American band), an American rock band , established in 1975 *The Boyz (South Korean band) The Boyz () is a South Korean boy band f ...

Maggie Q Margaret Denise Quigley (born May 22, 1979), professionally known as Maggie Q, is an American actress. She began her professional career in Hong Kong, with starring roles in the action films '' Gen-Y Cops'' (2000) and '' Naked Weapon'' (2002), ...

(born 1979), American actress *

Schoolboy Q Quincy Matthew Hanley (born October 26, 1986), better known by his stage name Schoolboy Q (stylized as ScHoolboy Q), is an American rapper. He began recording in 2007, and released his first two mixtapes, ''ScHoolboy Turned Hustla'' (2008) and '' ...

, rapper * Stacey Q, disco singer * Brian "Q" Quinn, member of the American comedy troupe The Tenderloins

Arts, entertainment, and media

Fictional entities

Q (James Bond) Q is a character in the James Bond films and novelisations. Q is the head of Q Branch (later Q Division), the fictional research and development division of the British Secret Service charged with oversight of top secret field technologies. Q ( ...

, a character in the ''James Bond'' novels and films * Q (''Star Trek''), a character and the name of the character's species * Q (''Street Fighter''), a character from the video game series ''Street Fighter'' * Q, an amnesiac child from the video-game '' Zero Time Dilemma'' * Quinton "Q" Brooks, a character from the TV series ''

Moesha ''Moesha'' (, ) is an American television sitcom that aired on UPN from January 23, 1996, to May 14, 2001. The series stars Contemporary R&B, R&B singer Brandy Norwood, Brandy as Moesha Denise Mitchell, an African-American teenager living with ...

'' * Ah Q, the main character in the novella '' The True Story of Ah Q'' * The Q, a character from the TV series '' The Lost Islands''

Literature

* ''Q'' (magazine), British music magazine **

Q Awards The Q Awards were the UK's annual music awards run by the music magazine '' Q''. Since they began in 1990, the Q Awards became one of Britain's biggest and best publicised music awards. Locations for the awards ceremony included Abbey Road Studios ...

, yearly music awards given by ''Q'' magazine * ''Q'' (novel), historical novel by Luther Blissett first published in Italian in 1999 *

Q source The Q source (also called The Sayings Gospel, Q Gospel, Q document(s), or Q; from , meaning "source") is a hypothesized written collection of primarily Jesus' sayings (, ). Q is part of the common material found in the Gospels of Matthew and ...

, also known as Q document, inferred collection of Jesus' sayings used by Gospel writers * '' "Q" Is for Quarry'', the seventeenth novel in Sue Grafton's ''Alphabet Mystery'' series, published in 2002

Music

* Q (1970s band), an American disco group *

SSQ (band) SSQ (formerly Q) is a synthpop outfit consisting of Stacey Swain, Jon St. James, and past members include Dan Van Patten and John Van Tongeren, Rich West, Karl Moët and Skip Hahn. Their debut album '' Playback'' received praise from critic ...

, formerly Q, an American synth-pop band * ''Q'' (album), Japanese language album by Mr. Children, 2000 * ''Q'', jazz album by Tom Hasslan's Krokofant * "Q", a song by Mental Cube (

The Future Sound of London The Future Sound of London (often abbreviated FSOL) is a British electronic music duo composed of Garry Cobain and Brian Dougans. They have been described as a "boundary-pushing" electronic act, covering techno, ambient music, ambient, house ...

), 1990 * "Q", a song by AAA, 2006

Networks, stations, and channels

Q (TV network) Q (formerly QTV and stylized as Qtv, standing for Quality Television) was a Television broadcaster, television network in the Philippines run by GMA Network (company), GMA Network Inc. through DWDB-TV, Citynet Network Marketing and Production ...

, Philippine network previously known as Quality TeleVision (QTV) * ARY Qtv, a Pakistani television channel * Q Radio, a UK radio station run by ''Q'' magazine * Q Radio, a former Philippine radio network (2019–2023) of

Mareco Broadcasting Network Mareco Broadcasting Network, Inc. is a radio network in the Philippines. Mareco stands for Mabuhay Records Corporation as its parent company also owns Villar Records and Mabuhay Records. Its headquarters is located at #6 Tirad Pass Street, St ...

and Horizon of the Sun Communications ** DWBM-FM, its former flagship station * Q Television Network, an American cable television network * Q TV, a UK music channel based on ''Q'' magazine * Q Channel, former names of BTV, an Indonesian television network * Q 104.3, a radio station in New York City

Other titled works

* ''Q'' (1982 film), horror film written and directed by Larry Cohen (Also known as ''Q – The Winged Serpent'') * ''Q'' (2011 film), French film * ''q'' (radio show), CBC Radio One show, formerly called ''Q'' * ''Q'' (TV series), Spike Milligan's BBC2 comedy series that ran between 1969 and 1983 *Q, the production code for the 1965 ''Doctor Who'' serial '' The Space Museum''

Business and government

* Q (dairy), Norwegian dairy brand *

Q clearance Q clearance or Q access authorization is the U.S. Department of Energy (DOE) security clearance required to access Top Secret Restricted Data, Formerly Restricted Data, and National Security Information, as well as Secret Restricted Data. Restric ...

, United States Department of Energy security clearance *

Q Score The Q Score (popularly known as Q-Rating) is a measurement of the familiarity and appeal of a brand, celebrity, company, or entertainment product (e.g., television show) used in the United States. The more highly regarded the item or person is, the ...

, in marketing, way to measure the familiarity of an item *

Q Theatre The Q Theatre was a British theatre located near Kew Bridge in Brentford, west London, which operated between 1924 and 1958. It was built on the site of the former Kew Bridge Studios. The theatre, seating 490 in 25 rows with a central aisle, wa ...

, a theatre in London, England * Q-telecom, Greek operator * Motorola Q, smartphone released in 2006 *

Pentax Q The Pentax Q is a mirrorless interchangeable-lens camera introduced by Pentax on June 23, 2011. Characteristics Introduced as "The world's smallest interchangeable lens system camera..." The Pentax Q system is composed of four bodies (Q, Q10, ...

, mirrorless interchangeable lens camera released in 2011 *

Tobin's q Tobin's q (or the q ratio, and Kaldor's v), is the ratio between a Asset, physical asset's market value and its replacement value. It was first introduced by Nicholas Kaldor in 1966 in his paper: ''Marginal Productivity and the Macro-Economic Theo ...

, a financial ratio developed by James Tobin

Computing and computer games

* Amazon Q, AI–powered assistant released in 2023 * Q (cipher), encryption algorithm *

Q (emulator) Q is a free emulator software that runs on macOS, Mac OS X, including OS X on PowerPC. Q is Mike Kronenberg's port of the open source and generic processor emulator QEMU. Q uses Cocoa (API), Cocoa and other Apple Computer, Apple technologies, su ...

, open-source x86 emulator for Mac OS X * Q (equational programming language), functional programming language based on term rewriting * Q (game engine), 3D middleware from Qube Software * Q-learning, AI algorithm * Q (number format), fixed-point number format built into certain computer processors *

Q (programming language from Kx Systems) Q is a programming language for array processing, developed by Arthur Whitney. It is proprietary software, commercialized by Kx Systems. Q serves as the query language for kdb+, a disk based and in-memory, column-based database. Kdb+ is b ...

, array processing language * Q (software), a computer software package for molecular dynamics simulation * Q Sharp (Q#), domain-specific programming language * Q, a channel service in QuakeNet's IRC services * Panasonic Q, a hybrid video game console between a GameCube and a DVD player, manufactured by Nintendo and Panasonic * Q*, a rumored OpenAI project *

Q Entertainment was a Japanese video game developer. The studio created, produced, and published digital entertainment content across multiple game consoles, PC broadband and mobile units. It was founded on October 10, 2003 by Tetsuya Mizuguchi, formerly of S ...

, developer of Rez HD and the Lumines and Meteos games *

Q-Games Q-Games, Limited is a video game developer based in Nakagyō-ku, Kyoto, Japan. It was founded by Argonaut Games alumnus Dylan Cuthbert and was closely affiliated with Nintendo and Sony Interactive Entertainment. Foundation Q-Games was founded b ...

, developer of the Pixel Junk series of PlayStation 3 games

Engineering

* Q, the standard abbreviation for an electronic

transistor A transistor is a semiconductor device used to Electronic amplifier, amplify or electronic switch, switch electrical signals and electric power, power. It is one of the basic building blocks of modern electronics. It is composed of semicondu ...

, used e.g. in circuit diagrams * Q the first moment of area, used in calculating shear stress distributions * Q, the

reactive power In an electric circuit, instantaneous power is the time rate of flow of energy past a given point of the circuit. In alternating current circuits, energy storage elements such as inductors and capacitors may result in periodic reversals of the ...

component of apparent power * Q Factor (bicycles), the width between where the pedals attach to the cranks *

Q factor In physics and engineering, the quality factor or factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. It is defined as the ratio of the initial energy stored in the resonator to the energy lost ...

or Q in resonant systems, a measurement of the effect of resistance to oscillation

Linguistics

Voiceless uvular stop The voiceless uvular plosive or stop is a type of consonantal sound, used in some spoken languages. It is pronounced like a voiceless velar plosive , except that the tongue makes contact not on the soft palate but on the uvula. The symbol in ...

in the International Phonetic Alphabet * Abbreviation for

Question A question is an utterance which serves as a request for information. Questions are sometimes distinguished from interrogatives, which are the grammar, grammatical forms, typically used to express them. Rhetorical questions, for instance, are i ...

Mathematics

\mathbb

or Q, set of all

rational number In mathematics, a rational number is a number that can be expressed as the quotient or fraction of two integers, a numerator and a non-zero denominator . For example, is a rational number, as is every integer (for example, The set of all ...

s * Q, the

Quaternion group In group theory, the quaternion group Q8 (sometimes just denoted by Q) is a nonabelian group, non-abelian group (mathematics), group of Group order, order eight, isomorphic to the eight-element subset \ of the quaternions under multiplication. ...

* Q,

Robinson arithmetic In mathematics, Robinson arithmetic is a finitely axiomatized fragment of first-order Peano arithmetic (PA), first set out by Raphael M. Robinson in 1950. It is usually denoted Q. Q is almost PA without the axiom schema of mathematical inducti ...

, a finitely axiomatized fragment of Peano Arithmetic * Q value in statistics, the minimum

false discovery rate In statistics, the false discovery rate (FDR) is a method of conceptualizing the rate of type I errors in null hypothesis testing when conducting multiple comparisons. FDR-controlling procedures are designed to control the FDR, which is the exp ...

at which the test may be called significant

Science

Biology and chemistry

* Q, the symbol for

discharge (hydrology) In hydrology, discharge is the volumetric flow rate (volume per time, in units of m3/h or ft3/h) of a stream. It equals the product of average flow velocity (with dimension of length per time, in m/h or ft/h) and the cross-sectional area (in m2 ...

* q, an abbreviation for "every" in

medicine Medicine is the science and Praxis (process), practice of caring for patients, managing the Medical diagnosis, diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, ...

* Q, abbreviation for the amino acid,

glutamine Glutamine (symbol Gln or Q) is an α-amino acid that is used in the biosynthesis of proteins. Its side chain is similar to that of glutamic acid, except the carboxylic acid group is replaced by an amide. It is classified as a charge-neutral ...

* Q, abbreviation for

quinone The quinones are a class of organic compounds that are formally "derived from aromatic compounds benzene.html" ;"title="uch as benzene">uch as benzene or naphthalene] by conversion of an even number of –CH= groups into –C(=O)– groups with ...

* q, designation for the Locus (genetics), long arm of a chromosome * Q,

reaction quotient In chemical thermodynamics, the reaction quotient (''Q''r or just ''Q'') is a dimensionless quantity that provides a measurement of the relative amounts of products and reactants present in a reaction mixture for a reaction with well-defined overal ...

Cardiac output In cardiac physiology, cardiac output (CO), also known as heart output and often denoted by the symbols Q, \dot Q, or \dot Q_ , edited by Catherine E. Williamson, Phillip Bennett is the volumetric flow rate of the heart's pumping output: tha ...

(Q), the volume of blood pumped by each ventricle per minute * Coenzyme Q, a carrier in electron transport *

Haplogroup Q (mtDNA) In human mitochondrial genetics, haplogroup Q is a Human mitochondrial DNA haplogroup, human mitochondrial DNA (mtDNA) haplogroup typical for Oceania. It is a subgroup of haplogroup Haplogroup M (mtDNA), M29'Q. Origin Haplogroup Q is a descenda ...

, a human mitochondrial DNA (mtDNA) haplogroup *

Haplogroup Q-M242 (Y-DNA) Haplogroup Q or Q-M242 is a Human Y-chromosome DNA haplogroup, Y-chromosome DNA haplogroup. It has two primary subclades: Q1/Q-L472 (also known as Q-MEH2) and Q2/Q-L275). These include numerous subclades that have been sampled and identified in ...

, a Y-chromosomal DNA (Y-DNA) haplogroup *

Q value (nuclear science) In nuclear physics and chemistry, the value for a nuclear reaction is the amount of energy absorbed or released during the reaction. The value relates to the enthalpy of a chemical reaction or the energy of radioactive decay products. It can be ...

, the differences of energies of the parent nuclides to the daughter nuclides

Physics and astronomy

* Q or q,

dynamic pressure In fluid dynamics, dynamic pressure (denoted by or and sometimes called velocity pressure) is the quantity defined by:Clancy, L.J., ''Aerodynamics'', Section 3.5 :q = \frac\rho\, u^2 where (in SI units): * is the dynamic pressure in pascals ...

** Max q * Q,

electric charge Electric charge (symbol ''q'', sometimes ''Q'') is a physical property of matter that causes it to experience a force when placed in an electromagnetic field. Electric charge can be ''positive'' or ''negative''. Like charges repel each other and ...

* q,

elementary charge The elementary charge, usually denoted by , is a fundamental physical constant, defined as the electric charge carried by a single proton (+1 ''e'') or, equivalently, the magnitude of the negative electric charge carried by a single electron, ...

* Q,

Fusion energy gain factor A fusion energy gain factor, usually expressed with the symbol ''Q'', is the ratio of fusion power produced in a nuclear fusion reactor to the power required to maintain the plasma in steady state. The condition of ''Q'' = 1, when the ...

* Q,

heat In thermodynamics, heat is energy in transfer between a thermodynamic system and its surroundings by such mechanisms as thermal conduction, electromagnetic radiation, and friction, which are microscopic in nature, involving sub-atomic, ato ...

* q,

momentum transfer In particle physics, wave mechanics, and optics, momentum transfer is the amount of momentum that one particle gives to another particle. It is also called the scattering vector as it describes the transfer of wavevector in wave mechanics. In ...

* Q,

quasar A quasar ( ) is an extremely Luminosity, luminous active galactic nucleus (AGN). It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by accretion onto a supermassive black hole with a mass rangi ...

* q, quecto-, a

metric prefix A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pr ...

of 10⁻³⁰ * Q, quetta-, a

of 10³⁰ * Q, Toomre's Stability Criterion * Q,

volumetric flow rate In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol (sometimes \do ...

* q,

quark A quark () is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nucleus, atomic nuclei ...

Sports

* Great Southern Bank Arena, formerly JQH Arena, a nickname for the arena on the campus of Missouri State University * Q (San Jose Earthquakes mascot), furry blue mascot of the Major League Soccer team San Jose Earthquakes *

San Diego Stadium San Diego Stadium was a multi-purpose stadium in San Diego, California, United States. Opened in 1967 as San Diego Stadium; it was renamed Jack Murphy Stadium for sportswriter Jack Murphy (sportswriter), Jack Murphy from 1981 to 1997. From 1997 t ...

, later Qualcomm Stadium, a nickname for a stadium in San Diego, California *

Quebec Major Junior Hockey League The Quebec Maritimes Junior Hockey League (QMJHL; , LHJMQ), formerly the Quebec Major Junior Hockey League is one of the three major junior ice hockey leagues that constitute the Canadian Hockey League (CHL). The league includes teams in Quebec ...

, often referred to as "The Q" * Q, a nickname for Rocket Arena, Cleveland, Ohio; from the arena's previous name, Quicken Loans Arena

Transportation

* Q (New York City Subway service) * The Q, a nickname for the

Chicago, Burlington and Quincy Railroad The Chicago, Burlington and Quincy Railroad was a railroad that operated in the Midwest, Midwestern United States. Commonly referred to as the Burlington Route, the Burlington, CB&Q, or as the Q, it operated extensive trackage in the states of ...

Q-ship Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchantman, armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the c ...

, converted merchant vessels with concealed armament intended to lure and destroy submarines * JRW kinki-Q

, the official West Japan Railway Company service symbol for the Kansai Line and

Yamatoji Line The is the common name of the western portion of the Kansai Main Line in Japan. The line is owned and operated by West Japan Railway Company (JR West). It starts at Kamo Station (Kyoto), Kamo Station in Kyoto Prefecture and ends at JR Namba Stat ...

Other uses

* Q Society of Australia, right-wing, anti-Islamic political society * Q, a nickname for Chuluaqui-Quodoushka, a series of New Age sexual meditation exercises developed by Harley Reagan * Quintals, an archaic method of measuring crop yield, was often abbreviated as q * Quarter, as in "Q1", "Q2", "Q3" and "Q4", a three-month period in a

calendar year A calendar year begins on the New Year's Day of the given calendar system and ends on the day before the following New Year's Day, and thus consists of a whole number of days. The Gregorian calendar year, which is in use as civil calendar in ...

* Q. texture, a Taiwanese term describing the ideal texture of many foods *

Initiative Q Quahl ( ), formerly known as Initiative Q, was an attempt to create a new payment network and digital currency. It was created by Israeli entrepreneur Saar Wilf, who previously founded Fraud Sciences, a payment security company acquired by Pay ...

, a new payment network and digital currency devised by Saar Wilf *

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, the military time zone code for UTC−04:00 *

Sky Q Sky Q is a subscription-based television and entertainment service operated by British satellite television provider Sky, as a part of its operations in Austria and Germany, Ireland, Italy and in the UK. The name also refers to the Sky Q set-to ...

, a subscription-based television and entertainment service * The Q (nightclub), an LGBT nightclub in New York City

People

Arts, entertainment, and media

Fictional entities

Literature

Music

Networks, stations, and channels

Other titled works

Business and government

Computing and computer games

Engineering

Linguistics

Mathematics

Science

Biology and chemistry

Physics and astronomy

Sports

Transportation

Other uses

See also