Trigger may refer to:

Notable animals and people

;Mononym * Trigger (horse), owned by cowboy star Roy Rogers ;Nickname *

Trigger Alpert Herman "Trigger" Alpert (September 3, 1916 – December 21, 2013) was an American jazz bassist from Indianapolis, Indiana. Music career A native of Indianapolis, Alpert attended Indiana University, where he studied music. Soon after, he played ...

(1916–2013), American jazz bassist * "Trigger Mike" Coppola (1900–1966), American gangster ;Surname *

Bruce Trigger Bruce Graham Trigger (June 18, 1937 – December 1, 2006) was a Canadian archaeologist, anthropologist, and ethnohistorian. He was appointed the James McGill Professor at McGill University in 2001. Life Born in Preston, Ontario (now part of Cam ...

(1937–2006), Canadian archaeologist *

Damon Trigger Damon James Trigger (born 22 April 1972) is a New Zealand-born former English cricketer. Trigger was a right-handed batsman who bowled right-arm medium-fast. He was born at Lower Hutt, Wellington. Trigger represented the Kent Cricket Board ...

(born 1972), New Zealand born former English cricketer *

Hannah Trigger Hannah Trigger (born 5 February 1987) is an Australian snowboarder Snowboarding is a recreational and competitive activity that involves descending a snow-covered surface while standing on a snowboard that is almost always attached to a rider ...

(born 1987), Australian snowboarder *

Ian Trigger Ian Trigger (30 September 1938 – 6 January 2010) was a British actor of stage, film and television who had a successful career in the United States. A diminutive actor, Trigger's long career saw him working in the West End, on Broadway and ...

(1938–2010), British actor

Technology

Trigger (firearms) A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun. The word may also be used to describe a switch that initiates the operation of other non-shooting devices such as a trap, a ...

, a mechanism that actuates the firing of firearms * Database trigger, procedural code that is automatically executed in response to certain events *

Dead man's trigger A dead man's switch (see alternative names) is a switch that is designed to be activated or deactivated if the human operator becomes incapacitated, such as through death, loss of consciousness, or being bodily removed from control. Originally a ...

, a safety device that activates safeguards if the operator is incapacitated * Flip-flop (electronics), called a trigger circuit by IBM *

Image trigger An image trigger initiates the capture of single or multiple frames of a digital camera by analysing the signals of its sensor. For capturing and analysing of fast moving objects (e.g. as in quality control of production lines) modern high speed c ...

, a device used in high speed cameras * Schmitt trigger, an electronic circuit

Art, entertainment, and media

Fictional entities

* Trigger (''Only Fools and Horses''), a BBC sitcom character played by Roger Lloyd-Pack *

Trigger Argee James Henry Schmitz (October 15, 1911 – April 18, 1981) was an American science fiction writer born in Hamburg, Germany of American parents. Life Schmitz was educated at a ''Realgymnasium'' in Hamburg, and grew up speaking both English ...

, a fictional character in a series of science fiction short stories by James H. Schmitz *

Devil Trigger , also known under the alias of , is a character and the main protagonist in ''Devil May Cry'', an action-adventure hack and slash video game series by Japanese developer and publisher Capcom. Introduced as the protagonist of the 2001 game wit ...

, a transformation ability found in the ''Devil May Cry'' series * Trigger, a fictional horse in "

Ernie (The Fastest Milkman in the West) "Ernie (The Fastest Milkman in the West)" is an innuendo-laden comedy or novelty song, written and performed by the English comedian Benny Hill. The song was first performed on television in 1970, and released as a successful recording, toppin ...

" * The main player character in '' Ace Combat 7: Skies Unknown'' * Trigger, the version of Popeye in the film ''The Story of Temple Drake'' (1933), a film adaptation of the William Faulkner novel ''Sanctuary'' * '' Ultraman Trigger'', a 2021 Japanese tokusatsu series

Film and television

* ''Trigger'' (2010 film), a Canadian film * ''

Trigger, Jr. '' Trigger, Jr.'' is a 1950 American Western film directed by William Witney and starring Roy Rogers, his horse Trigger, and Dale Evans. It was one of a series of Roy Rogers films produced by Republic Pictures. Plot Cast *Roy Rogers *Dale E ...

'' (1950), a 1950 American film starring Roy Rogers * "Triggers" (''Supergirl''), an episode of ''Supergirl'' * ''Trigger'' (2022 film), a Tamil-language film

Literature

* '' The Trigger'', a 1999 science fiction novel by Arthur C. Clarke and Michael P. Kube-McDowell * ''Triggers'' (novel), a 2012 science fiction novel by Robert J. Sawyer

Music

* The Trigger (band), a Serbian hard rock/heavy metal band

Albums and EPs

* ''Trigger'' (EP), a 2003 EP by In Flames * ''Trigger'' (album), a 2010 album by Porno Graffitti * ''Trigger'', an album by Jacob Quistgaard * ''Trigger'', an album by Soulside * ''Trigger'', an album by The Law

Instruments

* Trigger (drums), a transducer that allows a drum to control an electronic device *

Trigger (guitar) Trigger is the Martin N-20 nylon-string classical acoustic guitar used by country music singer-songwriter Willie Nelson. Early in his career, Nelson tested several guitars by different companies. After his Baldwin guitar was damaged in 1969, he ...

, the Martin N-20 guitar played by Willie Nelson *

Trigger (trombone) The trombone (german: Posaune, Italian, French: ''trombone'') is a musical instrument in the brass family. As with all brass instruments, sound is produced when the player's vibrating lips cause the air column inside the instrument to vibrat ...

, a switch that enables a trombonist to switch from one set of tubing to another * Trigger pad, a device used in electronic percussion

Songs

* "Trigger" (song), a 2019 song by Major Lazer and Khalid * "Trigger", by Anne-Marie from ''

Speak Your Mind ''Speak Your Mind'' is the debut studio album by English singer Anne-Marie, released on 27 April 2018 by Major Tom's and Asylum Records. Anne-Marie announced the album on 21 February 2018 and it was made available for pre-order two days later ...

'' * "Trigger", by Converge from '' The Dusk in Us'' * "Trigger", by In Flames from ''

Reroute to Remain ''Reroute to Remain'' (subtitled: ''Fourteen Songs of Conscious Insanity'', and on reissue: ''Fourteen Songs of Conscious Madness'') is the sixth studio album by Swedish heavy metal band In Flames, released in September 2002. The album saw a ma ...

'' and its eponymous EP

Ships

* USS ''Trigger'' (SS-237), a submarine (laid down 1941, sunk 1945) * USS ''Trigger'' (SS-564), a submarine (laid down 1949, decommissioned 1973)

Science

Trigger (particle physics) In particle physics, a trigger is a system that uses criteria to rapidly decide which events in a particle detector In experimental and applied particle physics, nuclear physics, and nuclear engineering, a particle detector, also known as a rad ...

, hardware or software based device for the (online-)selection of specific event classes from large datasets * Trigger, one event that makes a slope failure in landslides, in the causes of landslides *

Environmental trigger An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms. Abiotic factors include ambient temperature, amount of sunlight, and pH of the water soil in which an organism lives. Bi ...

, a factor caused (or aided) by the environment * ATLAS trigger system, in the ATLAS experiment

Biology

Hibernation induction trigger Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most ...

, a blood substance that induces hibernation *

Seizure trigger Generally, seizures are observed in patients who do not have epilepsy. There are many causes of seizures. Organ failure, medication and medication withdrawal, cancer, imbalance of electrolytes, hypertensive encephalopathy, may be some of its potenti ...

, a factor that can cause a seizure *

Spawning triggers Spawning triggers'' are environmental cues that cause marine animals to breed. Most commonly they involve sudden changes in the environment, such as changes in temperature, salinity, and/or the abundance of food. Catfish of the genus ''Corydoras'', ...

, environmental cues that cause fish to breed

Other uses

Studio Trigger , also known as Studio Trigger, is a Japanese animation studio founded by former Gainax employees Hiroyuki Imaishi and Masahiko Ōtsuka in 2011. It has produced anime works including '' Kill la Kill'' (2013), ''Little Witch Academia'' (short fi ...

, a Japanese animation studio founded by Hiroyuki Imaishi * Trigger, a verb conjugation specifying the subject's role in languages with Austronesian alignment * ''

Casus belli A (; ) is an act or an event that either provokes or is used to justify a war. A ''casus belli'' involves direct offenses or threats against the nation declaring the war, whereas a ' involves offenses or threats against its ally—usually one b ...

'', an event triggering a war * Trauma trigger, an event causing traumatic memories or feelings to resurface * Trigger (game controller), a button on some game controllers