An assassin is a person who commits assassination.
The origin of the term is the medieval Order of Assassins, a secretive Nizari Ismaili religious order that existed from around 1090–1275 CE and carried out high-profile assassinations during the crusader states period.
Assassin, or variants, may also refer to:
Film and television
Film
Assassin (1969 film), a South Korean thriller
Assassin (1973 film), a British thriller
Assassin, a 1986 TV movie starring Robert Conrad
Assassins (1995 film), starring Sylvester Stallone and Antonio Banderas
Assassin (2015 film), starring Danny Dyer
Assassins (2020 film), an American documentary
Assassin (2023 film), starring Bruce Willis
Assassin(s), a 1997 French film
The Assassin, British title for Gunfighters, a 1947 American film
The Assassin, American title for Venetian Bird, a 1952 British film
The Assassin (1961 film), an Italian crime drama
The Assassin, a 1967 Shaw Brothers film
The Assassin, or Point of No Return (1993 film)
The Assassin (2015 film), a wuxia film
The Assassin (2023 film), a South Korean historical action-drama
The Assassins (film), a 2012 Chinese film
Television
The Assassin (TV series), 2025
"Assassin" (Law & Order: Criminal Intent)
"Assassin" (Star Wars: The Clone Wars)
"Assassin", a 1981 episode of Blake's 7
"Assassins" (The Crown)
"Assassins" (Desperate Housewives)
"The Assassin" (The Borgias), a 2011 episode
"The Assassin", an episode of MacGyver (1985 TV series)
Gaming
Assassin (video game), 1992
The Assassin (cancelled video game)
Assassin (game), a live-action game
Assassin!, a The Way of the Tiger gamebook
Literature
Assassin (Cain novel), by Tom Cain, 2008
Assassins (LaHaye novel), by Jerry B. Jenkins and Tim Lahaye, 1999
"L'Assassin", an 1887 short story by Guy de Maupassant
The Assassini, a 1990 novel by Thomas Gifford
The Assassins, a 1972 novel by Elia Kazan
The Assassins, a 2005 novel by Oliver North and Joe Musser
The Assassins: A Radical Sect in Islam, a 1967 non-fiction book by Bernard Lewis
Krondor: The Assassins, a 1999 novel by Raymond E. Feist
Music
Groups
Assassin (band), an American heavy metal band
Assassin (German band), a German thrash metal band
Assassin (deejay) (born 1982), Jamaican dancehall deejay
Assassin (group), a French hardcore rap group
Albums
Assassin (album), by Assassin, 1984
Assassins, by Into a Circle, 1984
Assassins: Black Meddle, Part I, by Nachtmystium, 2008
I, Assassin, by Gary Numan, 1982
The Assassin (album), by Big Ed, 1998
Songs
"Assassin" (The Orb song), 1992
"Assassin", a song by John Mayer from the 2009 album Battle Studies
"Assassin", a song by Morbid Saint from the 1989 album Spectrum of Death