Q (disambiguation)

Q, or q, is the seventeenth letter of the English alphabet.

Q may also refer to:

• Q (James Bond), a character in the James Bond novels and films
• Q (Star Trek), a character and the name of the character's species
  • List of Star Trek characters (N–S) § Q
• 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
• 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

• Q (magazine), British music magazine
  • Q Awards, yearly music awards given by Q magazine
• Q (novel), historical novel by Luther Blissett first published in Italian in 1999
• Q source, usually referred to as Q, hypothetical source document inferred from shared material in the Gospels of Matthew and Luke
• Codex Marchalianus, designated by the abbreviation Q, 6th-century Greek manuscript copy of the Septuagint
• "Q" Is for Quarry, the seventeenth novel in Sue Grafton's Alphabet Mystery series, published in 2002
• Q: A Voyage Around the Queen, the US title of a 2024 book by Craig Brown about Queen Elizabeth II
• Q, pseudonym of Sir Arthur Quiller-Couch, the Cornish writer

• Q (1970s band), an American disco group
• SSQ (band), formerly Q, an American synth-pop band
• Q (album), Japanese language album by Mr. Children, 2000
• Q, 2019 jazz album by Tom Hasslan, Krokofant, Ståle Storløkken, and Ingebrigt Håker
• Q, 2004 album by poire_z
• "Q", a song by The Future Sound of London under the stage name Mental Cube, 1990
• "Q", a song by AAA, 2006
• § Musicians

• Q (1982 film), horror film written and directed by Larry Cohen; also known as Q – The Winged Serpent
• Q (2011 film), French erotic drama film; also known as Desire
• q (radio show), CBC Radio One show, formerly called Q
• Q... (TV series), Spike Milligan's BBC2 comedy series that ran between 1969 and 1982
• Q, the production code for the 1965 Doctor Who serial The Space Museum
• Q! Film Festival, Jakarta, Indonesia
• Q Theatre, a theatre in London, England
• § Performers and film people

• Q (Philippine TV 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 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
• Canal Q, a Portuguese television channel
• Sky Q, a subscription-based television and entertainment service

• Q Score, in marketing, way to measure the familiarity of an item
• Tobin's q, a financial ratio developed by James Tobin
• Q1, Q2, Q3, or Q4, a quarter year, a three-month period in a calendar year, also known as a trimester
• Initiative Q or Quahl, a payment network and digital currency devised by Saar Wilf
• Quintals, an archaic method of measuring crop yield, was often abbreviated as q
• Q (dairy) or Q–meieriene, Norwegian dairy brand
• Q texture, a Taiwanese term describing the ideal texture of many foods
• The Q (nightclub), an LGBT nightclub in New York City

• Q (cipher), encryption algorithm published in 2000, invented by Leslie McBride
• Q (emulator), open-source x86 emulator for macOS
• Q (number format), fixed-point number format built into certain computer processors
• Q (software), a computer software package for molecular dynamics simulation

• Amazon Q, AI–powered assistant released in 2023
• Q-learning, AI algorithm
• Q*, a rumored internal name for OpenAI o1

• Q-telecom, Greek operator
• Motorola Q, smartphone released in 2006
• Pentax Q, mirrorless interchangeable lens camera released in 2011
• Q, the standard abbreviation for an electronic transistor, used e.g. in circuit diagrams

• Q (equational programming language), functional, based on term rewriting, the predecessor to Pure
• Q (programming language from Kx Systems), for array processing
• Q Sharp (Q#), domain-specific, for quantum algorithms, designed by Microsoft Research

• Q (game engine), 3D middleware from Qube Software
• 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 Entertainment, developer of Rez HD and the Lumines and Meteos games
• Q-Games, developer of the Pixel Junk series of PlayStation 3 games

• Q the first moment of area, used in calculating shear stress distributions
• Q, the reactive power component of apparent power
• Q factor (bicycles), the width between where the pedals attach to the cranks
• Q factor or Q in resonant systems, a measurement of the effect of resistance to oscillation

• Q clearance, United States Department of Energy security clearance
• Quebec, the military time zone code for UTC−04:00
• Q (Sanna's Post) Battery Royal Artillery, United Kingdom
• Q Society of Australia, right-wing, anti-Islamic political society
• § Politics people

• Q, stage name for Qurram Hussain of JoSH
• Q, stage name for Q Marsden, American rapper
• Q, nickname of Quincy Jones, American record producer and musician
• Q, nickname of Quinnes Parker, a member of 112, an American R&B group
• Q, main dancer and vocalist of South Korean boy band The Boyz
• Schoolboy Q, rapper
• Stacey Q, disco singer

• Brian "Q" Quinn, member of the American comedy troupe The Tenderloins
• Quiana "Q" Smith, American stage actress
• Maggie Q (born 1979), American actress
• Q, nickname of Qaushiq Mukherjee, an Indian film director
• Q, pseudonym of Quentin Elias in his appearances in gay porn site Randy Blue
• Q (drag queen), stage name for Robert Severson (American, born 1996), as a contestant on RuPaul's Drag Race season 16

• Q, pseudonym used by the supposed originator of QAnon, an American far-right conspiracy theory
• Q Manivannan, Member of the Scottish Parliament
• Qiulae Wong, a New Zealand politician and the leader of The Opportunity Party
• Q, or Q Martel, nicknames of Giffard Le Quesne Martel, British military engineer and tank strategist

• ${\displaystyle \mathbb {Q} }$ or Q, set of all rational numbers
• Q₈ or sometimes just Q, the quaternion group
• Q, Robinson arithmetic, a finitely axiomatized fragment of Peano Arithmetic
• Q, the quadrature component of a sinusoid
• q or Q, a quadratic form
• Q, a rotation matrix
• Quotient, as in "Q-category"
• Q, a variable, often representing a proposition or a point (geometry), usually the second of two or more
• q, a variable, often representing a prime number, usually the second of two or more

• Q, the proportion of discoveries that are false, whose expected value is the false discovery rate
  • q-value (statistics), in the Storey procedure
• Q₁, Q₂, or Q₃, a quartile
• q, the probability of failure of a Bernoulli trial
• Q-function, the tail distribution function of the standard normal distribution

• q, quecto-, the metric prefix for 10⁻³⁰×...
• Q, quetta-, the metric prefix for 10³⁰×...
• q, momentum transfer

• Quassia, a genus of plants, in family Simaroubaceae
• Quercus, the genus of the oak tree, in family Fagaceae
• Quesnelia, a genus of flowering plants, in family Bromeliaceae
• Quintinia, a genus of evergreen trees and shrubs, in family Paracryphiaceae
• Quisqualis, a genus identified with Combretum, bushwillows, in family Combretaceae

• Quadrula, a genus of freshwater mussel, in the family Unionidae
• Quaesitosaurus, a genus of sauropod dinosaur, in family Nemegtosauridae
• Quantula, a genus of snail, in family Dyakiidae
• Quadrastichodella, a genus of hymenopteran insects, in family Eulophidae
• Quinqueloculina, a genus of foraminifera single-celled organisms, in family Miliolidae
• Quiscalus, a genus of grackle birds, in family Icteridae

• q, a medical abbreviation for "every"
• Cardiac output (Q), the volume of blood pumped by each ventricle per minute
• Haplogroup Q (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
• Haplogroup Q-M242 (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
• Q fever, query fever, or coxiellosis, a human and animal disease

• Q, abbreviation for the amino acid, glutamine
• Q, abbreviation for quinone
• q, designation for the long arm of a chromosome
• Coenzyme Q, a carrier in electron transport

• Q, reaction quotient
• Q, heat
• Q, fusion energy gain factor

• Q value (nuclear science), the differences of energies of the parent nuclides to the daughter nuclides
• q or Q, electric charge
• Husimi Q representation of the phase space distribution of a quantum state
• q, quark

• Q, the symbol for discharge (hydrology)
• Q or q, dynamic pressure
  • Max q
• Q, volumetric flow rate

• Q, quasar
• Q star or gray hole
• Q, the Toomre Q parameter, in the (Safronov–)Toomre stability criterion

• Q School, qualifying school in golf
• Q School (snooker), the qualification school for the World Snooker Tour
• 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, later Qualcomm Stadium, a nickname for a stadium in San Diego, California
• Quebec Major Junior Hockey League, often referred to as "The Q"
• Q, a nickname for Rocket Arena, Cleveland, Ohio; from the arena's previous name, Quicken Loans Arena

• Q, nickname for NBA assistant coach Bruce Fraser
• Q, nickname for Joel Quenneville, Canadian-American ice hockey coach
• Q, nickname of American basketball player Quintin Dailey (1961–2010)
• Q, nickname of former American football player Anquan Boldin

• Q (New York City Subway service)
• The Q, a nickname for the Chicago, Burlington and Quincy Railroad
• Q-ship, converted merchant vessels with concealed armament intended to lure and destroy submarines
• , the official West Japan Railway Company service symbol for the Kansai Line and Yamatoji Line

• q, the International Phonetic Alphabet symbol for the voiceless uvular plosive/stop
• Q, an abbreviation for "question"
• Q code, in telecommunication
• Queen (chess)
• Queen (playing card)
• Quintus (praenomen)
• Q, a nickname for Chuluaqui-Quodoushka, a series of New Age sexual meditation exercises developed by Harley Reagan