Gary Mark Gilmore was an American criminal who gained international attention for demanding the implementation of his death sentence for two murders he had admitted to committing in Utah. After the U.S. Supreme Court upheld a new series of death penalty statutes in the 1976 decision Gregg v. Georgia, he became the first person in almost ten years to be executed in the United States. These new statutes avoided the problems under the 1972 decision in Furman v. Georgia, which had resulted in earlier death penalty statutes being deemed "cruel and unusual" punishment, and therefore unconstitutional. Gilmore was executed by a firing squad in 1977. His life and execution were the subject of the 1979 nonfiction novel The Executioner's Song by Norman Mailer, and 1982 TV film of the novel starring Tommy Lee Jones as Gilmore.

The Executioner's Song (1979) is a Pulitzer Prize-winning true crime novel by Norman Mailer that depicts the events related to the execution of Gary Gilmore for murder by the state of Utah. The title of the book may be a play on "The Lord High Executioner's Song" from Gilbert and Sullivan's The Mikado. "The Executioner's Song" is also the title of a poem by Mailer, published in Fuck You magazine in September 1964 and reprinted in Cannibals and Christians (1966), and the title of one of the chapters of his 1975 non-fiction book The Fight.